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 machine head assembly comprises an air duct assembly, a machine head assembly and an air outlet equipment, the air duct assembly comprises a main air duct, a central air duct and an annular air duct, and the central air duct and the annular air duct are arranged at one end of the main air duct; the air deflector assembly comprises a plurality of air deflectors, and the air deflectors are provided with closing positions for closing the central air duct and opening positions for opening the central air duct; the driving assembly is connected with the multiple air guide plates and can drive the air guide plates to be switched between the closing position and the opening position; and the heating assembly is arranged in the annular air duct. Loss during hot air delivery can be avoided, heat loss during heating is reduced, the heating assembly is arranged in the annular air duct, airflow evenly flows through the heating assembly due to the air gathering effect of the annular air duct, and the optimal heating effect can be achieved.

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] Related air-discharging devices, such as cooling and heating circulating fans, have the function of discharging both cold and hot air. They typically use a rear-mounted heating element, which is far from the air outlet. As the hot air cools down during transmission, the temperature of the hot air blown out of the outlet is relatively low, failing to meet the user's need for warmth and comfort. Summary of the Invention

[0003] In view of this, the present invention provides a head assembly and an air outlet device to solve the problem of low temperature of hot air blown out from the air outlet.

[0004] In a first aspect, the present invention provides a nose assembly, comprising: The air duct assembly includes a main air duct, a central air duct, and an annular air duct. The central air duct and the annular air duct are located at one end of the main air duct, and the annular air duct is located on the outer periphery of the central air duct. 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 the plurality of the air guide plates, is capable of driving the air guide plates to switch between the closed position and the open position; The heating element is located in the annular air duct.

[0005] Beneficial effects: When cold air is needed, the heating element is not activated. The drive unit controls the air guide plate to open, and the airflow enters the main air duct, then flows to the central and annular air ducts before being blown out. This ensures a sufficiently strong and large volume of cold air. When hot air is needed, the heating element is activated, and the drive unit controls the air guide plate to close. The airflow enters the main air duct, then flows to the annular air duct. After being heated by the heating element, the air is blown out, avoiding heat loss during hot air delivery and minimizing heat loss. Furthermore, the heating element's location in the annular air duct ensures that the airflow is evenly distributed across the heating element, achieving optimal heating performance.

[0006] 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 an 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.

[0007] Beneficial effects: When the air guide plates are in the closed position, the plates are formed on the same plane, annular cone, or adjacent plates at least partially overlap, which can block airflow through the central air duct. When the air guide plates are in the open position, an air passage is formed between adjacent plates, allowing airflow to pass through the first mounting bracket. By setting the first mounting bracket, the air guide plate assemblies can be pre-assembled, facilitating the assembly of the entire head assembly.

[0008] 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.

[0009] In one optional embodiment, the first central connecting portion and / or the first annular connecting portion are each provided with a plurality of first slots in 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.

[0010] Beneficial effects: The air guide plate includes a rotating shaft located at at least one end of the plate body. The rotating shaft is located in the first slot, which facilitates the positioning and installation of the air guide plate and can improve assembly efficiency.

[0011] 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.

[0012] Beneficial effects: The rocker arm is located in the actuation groove, and the rotating shafts at both ends of the plate are located in the first slot, allowing for quick assembly of the air guide plate. When the rotating component rotates, it drives the rocker arm to move, thereby driving the air guide plate to rotate. Therefore, the rotation of one rotating component can drive multiple air guide plates to rotate simultaneously, resulting in a simpler structure and lower cost.

[0013] 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; The drive gear is connected to the output shaft of the drive motor and meshes with the meshing part.

[0014] Beneficial effects: When the drive motor is working, it drives the drive gear to rotate. The drive gear meshes with the meshing part of the rotating part, thereby driving the rotating part to rotate, which in turn drives the rocker arm to rotate to a certain extent, thereby simultaneously driving each air guide plate to flip. The drive assembly has a simple structure and reliable transmission.

[0015] 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.

[0016] Beneficial effects: By setting up a drive motor bracket, the installation of the drive motor is facilitated. In addition, the rotating part and the drive motor bracket rotate in coordination, and the drive motor bracket can limit the rotation of the rotating part and ensure that the rotating part can rotate smoothly.

[0017] 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.

[0018] Beneficial effects: After the mounting shaft passes through the mounting hole, it is fixedly connected to the first central connecting part, which can connect the drive motor bracket, rotating parts and the first mounting bracket into a whole, which can improve assembly stability and assembly efficiency.

[0019] 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.

[0020] Beneficial effects: By setting a limiting structure, which restricts the rotation angle of the rotating parts, it can be ensured that the air guide plate can only switch between the open and closed positions.

[0021] 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.

[0022] Beneficial effect: The first limiting part restricts the axial movement of the rotating part, which can prevent the rotating part from moving along the axial direction.

[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] Beneficial effect: By setting a second limiting part, the drive gear can be prevented from moving axially.

[0025] 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.

[0026] Beneficial effects: By setting up an outer shell, the main air duct, air guide plate assembly, drive assembly and heating assembly are all located inside the outer shell, making the appearance more beautiful. The first mounting bracket is connected to the outer shell, which can fix the first mounting bracket inside the outer shell. During assembly, the air guide plate assembly is first assembled into a whole, and then the first mounting bracket in the air guide plate assembly is installed into the outer shell to realize the assembly of the air guide plate assembly into the outer shell.

[0027] In one alternative embodiment, the central air duct and the annular air duct are formed within the housing; or, the first mounting bracket further includes an annular wall panel surrounding the outside of the first annular connecting portion, the gap between the annular wall panel 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.

[0028] In one optional embodiment, the outer casing includes a cylindrical shell, a second central connecting portion, and a second annular connecting portion. The gap between the cylindrical shell and the second annular connecting portion forms the annular air duct. The inner side of the second annular connecting portion forms the central air duct. The second central connecting portion is correspondingly connected to the first central connecting portion, and the second annular connecting portion is correspondingly connected to the first annular connecting portion.

[0029] Beneficial effects: The gap between the cylindrical shell and the second annular connecting part forms an annular air duct, and the inner side of the second annular connecting part forms a central air duct. The structure of the shell itself forms an annular air duct and a central air duct, making the structure simpler. The second central connecting part is connected to the first central connecting part, and the second annular connecting part is connected to the first annular connecting part, which can stably connect the first mounting bracket to the shell.

[0030] In one alternative embodiment, the drive motor is disposed between the drive motor bracket and the second central connecting portion.

[0031] Beneficial effect: The drive motor is positioned between the drive motor bracket and the second center connection, which ensures effective fixation of the drive motor.

[0032] 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.

[0033] Beneficial effect: By setting a second slot in the second annular connecting part, when the first annular connecting part is connected to the second annular connecting part, the rotating shaft at one end of the plate is limited between the first slot and the second slot, which can prevent the air guide plate from falling off the first mounting bracket.

[0034] In one alternative embodiment, the outer casing is provided with a first annular air outlet grille on the side near the annular air duct.

[0035] Beneficial effects: By setting the first annular air outlet grille, the heating components located in the annular air duct can be shielded, making the appearance more aesthetically pleasing. It can also prevent users from accidentally putting their hands into the annular air duct, which could lead to burns or electric shocks and other electrical safety hazards.

[0036] In one alternative embodiment, the nose assembly further includes a front grille connected to the housing and opposite the central air duct.

[0037] Beneficial effects: By setting up a front net, the central air duct and the internal air guide plate components can be shielded to a certain extent, and safe use can be ensured.

[0038] In one optional embodiment, the heating component includes a second mounting bracket and an annular heating element disposed on the second mounting bracket, the second mounting bracket being fixed to the end of the main air duct.

[0039] Beneficial effect: By setting a second mounting bracket, it is easier to install and fix the ring-shaped heating element.

[0040] In one optional embodiment, the second mounting bracket includes an annular wall surface with a plurality of ribs, and the outer periphery of the annular heating element is interference-fitted with the ribs.

[0041] Beneficial effects: By setting ribs on the annular wall, the outer periphery of the annular heating element is interference-fitted with the ribs. The annular heating element can be fixed by simply embedding it into the inner side of the second mounting bracket, which can improve installation efficiency. In one alternative embodiment, the head assembly further includes a housing and a rear screen, the rear screen being disposed at one end of the main air duct away from the central air duct, or the rear screen being disposed at one end of the housing away from the central air duct.

[0042] Beneficial effects: By adding a rear net, the overall appearance of the head assembly can be improved, and safety in use can be ensured.

[0043] In one optional embodiment, the main air duct is provided with a fan blade and a main motor capable of driving the fan blade to rotate. The main motor has a first working state of rotating in a first direction and a second working state of rotating in a second direction. When the main motor is in the first working state, the drive component controls the air guide plate to switch to the open position, and the airflow enters the main air duct through the central air duct and the annular air duct and is then blown out; when the main motor is in the second working state, the drive component controls the air guide plate to switch to the closed position, and the airflow enters the annular air duct through the main air duct and is then blown out.

[0044] Secondly, the present invention also provides an air outlet device, comprising: The aforementioned head assembly.

[0045] Beneficial effects: When cold air is needed, the heating element is not activated. The drive unit controls the air guide plate to open, and the airflow enters the main duct and flows to the central and annular ducts before being blown out, ensuring a strong and large volume of cold air. When hot air is needed, the heating element activates, and the drive unit controls the air guide plate to close. The airflow enters the main duct and flows to the annular duct, where it is heated by the heating element before being blown out. Because the heating element is located on the outlet side, heat loss during hot air delivery is avoided, reducing heat loss during heating. Furthermore, the annular duct's air-gathering effect ensures that the airflow passes evenly over the heating element, achieving optimal heating results. Alternatively, the main air duct of the air outlet device is equipped with fan blades and a main motor that drives the fan blades to rotate. The main motor has a first working state of rotating in a first direction and a second working state of rotating in a second direction. When cold air is needed, the main air duct faces the user, the main motor is in the first working state, and the drive component controls the air guide plate to switch to the open position. The airflow enters the main air duct through the central air duct and the annular air duct and is then blown out, ensuring that the cold air is strong enough and has a large air volume. When hot air is needed, the annular air duct faces the user, the main motor is in the second working state, and the drive component controls the air guide plate to switch to the closed position. The airflow enters the annular air duct through the main air duct, is heated by the heating component, and is then blown out. Since the heating component is located on the air outlet side, it can avoid loss when the hot air is delivered and reduce heat loss during heating. Furthermore, the heating component is located in the annular air duct, and the air-gathering effect of the annular air duct allows the airflow to flow evenly over the heating component, achieving the optimal heating effect.

[0046] In one alternative implementation, the air outlet device is a fan or a heater. Attached Figure Description

[0047] 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.

[0048] Figure 1 This is a cross-sectional view of a head assembly according to an embodiment of the present invention; Figure 2 This is an exploded view of a nose cone assembly according to an embodiment of the present invention; Figure 3 for Figure 2 A schematic diagram of the second mounting bracket; Figure 4 for Figure 2 A schematic diagram of the inner and outer shell; Figure 5 This is the left view of the outer casing; Figure 6 for Figure 5 Enlarged view of point A in the middle; Figure 7 This is a right view of a head assembly according to an embodiment of the present invention when the air guide plate is in the closed position; Figure 8 A cross-sectional view of the air guide plate assembly and drive assembly after assembly; Figure 9 for Figure 8 Schematic diagram of the rotating component; Figure 10 for Figure 8 Schematic diagram of the central air guide plate; Figure 11 for Figure 8 A schematic diagram of the first mounting bracket in the middle; Figure 12 This is a schematic diagram of the first mounting bracket in an alternative embodiment; Figure 13 This is a schematic diagram of an air outlet device according to an embodiment of the present invention.

[0049] Explanation of reference numerals in the attached figures: 1. Main air duct; 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. Motor rear cover; 8. Fan blade knob; 9. First mounting bracket; 901. First central connecting part; 902. First annular connecting part; 903. First slot; 904. First connecting rib; 905. Screw through hole; 906. First limiting part; 907. Second limiting part; 908. Annular wall panel; 10. Rotating component; 1001. Actuating groove; 1002. Engaging part; 1003. Limiting groove; 1004. Installation... 1005. Through hole; 11. Annular stepped surface; 12. Drive motor; 13. Drive motor bracket; 14. Housing; 15. Second annular connecting part; 16. Second slot; 17. Cylindrical housing; 18. First annular air outlet grille; 19. Second central connecting part; 20. Second connecting rib; 11. Front grille; 12. Decorative cover; 13. Rear grille; 14. Second mounting bracket; 15. Annular support frame; 16. Annular wall surface; 17. Rib; 18. Annular heating element; 19. Body bracket. Detailed Implementation

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] Related air-dispensing devices, such as cooling and heating circulators, typically employ a rear-mounted heating element. This rear-mounted heating element is far from the air outlet, causing the hot air to gradually cool during transmission. This results in lower temperatures when the hot air is blown out of the outlet, failing to meet the user's need for warmth and comfort. Furthermore, due to the long hot air transmission path, higher heating power is required to ensure sufficient hot air temperature, thus increasing energy consumption.

[0055] In addition, the heating element of the related technology is exposed, which is not aesthetically pleasing.

[0056] The following is combined Figures 1 to 13 The following describes embodiments of the present invention.

[0057] According to an embodiment of the present invention, in one aspect, a head assembly is provided, including an air duct assembly, an air guide plate assembly, a drive assembly, and a heating assembly.

[0058] The air duct assembly includes a main air duct 1, a central air duct 2, and an annular air duct 3. The central air duct 2 and the annular air duct 3 are located at one end of the main air duct 1, and the annular air duct 3 is located on the outer periphery of the central air duct 2. 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 position and the open position. The heating element is located in the annular air duct 3.

[0059] In this embodiment, when cold air is needed, the heating element is not activated. The drive component controls the air guide plate 4 to switch to the open position. After the airflow enters the main air duct 1, it flows from the main air duct 1 to the central air duct 2 and the annular air duct 3 respectively. After being blown out through the central air duct 2 and the annular air duct 3, the cold air is ensured to be strong enough and have a large air volume. When hot air is needed, the heating element is activated. The drive component controls the air guide plate 4 to switch to the closed position. After the airflow enters the main air duct 1, it flows from the main air duct 1 to the annular air duct 3. After being heated by the heating element, it is blown out. This avoids loss during hot air delivery and reduces heat loss during heating. Furthermore, the heating element is located in the annular air duct 3, and the air-gathering effect of the annular air duct 3 ensures that the airflow flows evenly over the heating element, achieving the optimal heating effect.

[0060] It should be noted that "multiple" means at least two, and "multiple air guides 4" specifically refers to at least two air guides 4.

[0061] In one specific embodiment, the main air duct 1 is provided with a fan blade 5 and a main motor 6 that can drive the fan blade 5 to rotate.

[0062] In one specific embodiment, a main motor bracket is provided inside the main air duct 1. The main motor 6 is fixed behind the main motor bracket and connected to the motor rear cover 7. The motor rear cover 7 is fixedly connected to the main motor bracket and surrounds the main motor 6.

[0063] In one specific embodiment, the fan blade 5 is an axial flow fan blade.

[0064] In one specific embodiment, the fan blade 5 is fixed by the fan blade knob 8 after being installed on the output shaft of the main motor 6.

[0065] In one embodiment, the air guide plate assembly includes a first mounting bracket 9, which includes a first central connecting portion 901 and a first annular connecting portion 902. The air guide plate 4 is rotatably disposed between the first central connecting portion 901 and the first annular connecting portion 902. 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 an annular cone surface or adjacent plate bodies 401 at least partially overlap to block the communication between the main air duct 1 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 1 and the central air duct 2 can be connected.

[0066] 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 9. By setting the first mounting bracket 9, the air guide plate assembly can be pre-assembled, which facilitates the assembly of the entire head assembly.

[0067] 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.

[0068] In one specific embodiment, the first annular connecting part 902 and the first central connecting part 901 are connected by a plurality of radially arranged first connecting ribs 904. Along the radial direction of the main air duct 1, the first connecting ribs 904 gradually tilt away from the main air duct 1. The air guide plate 4 is disposed on the first mounting bracket 9. When the air guide plate 4 is switched to the closed position, along the radial direction of the main air duct 1, the air guide plate 4 gradually tilts away from the main air duct 1.

[0069] Specifically, the head assembly also includes a housing 14. The air guide plate assembly is positioned between the first mounting bracket 9 and the housing 14. Along the radial direction of the main air duct 1, the first connecting rib 904 gradually tilts away from the main air duct 1, and the first central connecting part 901 is closer to the main air duct 1, so that a larger space is formed between the first mounting bracket 9 and the housing 14 to accommodate the air guide plate assembly, avoiding the unsightly appearance caused by the housing 14 protruding outward. Secondly, the air guide plate assembly is positioned between the first mounting bracket 9 and the housing 14. Along the radial direction of the main air duct 1, the first connecting rib 904 gradually tilts away from the main air duct 1. When the air guide plate 4 is switched to the closed position, along the radial direction of the main air duct 1, the air guide plate 4 also gradually tilts away from the main air duct 1. The tilted air guide plate 4 makes it easier for the airflow from the main air duct 1 to flow into the annular air duct 3, reducing airflow resistance and avoiding airflow dead zones.

[0070] 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 1.

[0071] 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.

[0072] 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.

[0073] In one embodiment, the first central connecting portion 901 and / or the first annular connecting portion 902 are provided with a plurality of first slots 903 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 903.

[0074] 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 903, 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 903.

[0075] In a preferred embodiment, both the first central connecting portion 901 and the first annular connecting portion 902 are provided with a plurality of first slots 903 along the circumferential direction. The first slots 903 provided in the first central connecting portion 901 and the first slots 903 provided in the first annular connecting portion 902 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 903.

[0076] In this embodiment, the air guide plate 4 includes a rotating shaft 402 located at both ends of the plate body 401. The rotating shaft 402 at one end of the plate body 401 is located in the first slot 903 of the first central connecting part 901, and the rotating shaft at the other end of the plate body 401 is located in the first slot 903 of the first annular connecting part 902. This facilitates the positioning and installation of the air guide plate 4 and can improve assembly efficiency.

[0077] In other alternative embodiments, through holes may be provided in the first central connecting portion 901 and the first annular connecting portion 902, and the rotating shaft 402 may be rotatably disposed in the through holes.

[0078] In one embodiment, the air guide plate 4 further includes a rocker arm 403, and the driving component includes a rotating member 10. The rotating member 10 is provided with a plurality of actuating grooves 1001 spaced apart along the circumference. The rocker arm 403 is disposed in the actuating grooves 1001. When the rotating member 10 rotates, it drives the rocker arm 403 to move, thereby driving the air guide plate 4 to rotate.

[0079] In this embodiment, the rocker arm 403 is located in the actuation groove 1001, and the rotating shafts 402 at both ends of the plate 401 are located in the first slots 903, allowing for quick assembly of the air guide plate 4. When the rotating component 10 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 10 can simultaneously drive multiple air guide plates 4 to rotate together, resulting in a simpler structure and lower cost.

[0080] Specifically, the joystick 403 and the plate 401 are not coplanar.

[0081] 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 10.

[0082] In one embodiment, the rotating member 10 has a meshing portion 1002, and the driving assembly further includes a drive motor 11 and a drive gear 12. The drive motor 11 is fixed relative to the first central connection portion 901; the drive gear 12 is connected to the output shaft of the drive motor 11 and meshes with the meshing portion 1002.

[0083] In this embodiment, when the drive motor 11 is working, it drives the drive gear 12 to rotate. The drive gear 12 meshes with the meshing part 1002 of the rotating part 10, thereby driving the rotating part 10 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.

[0084] In one specific embodiment, the meshing part 1002 has internal meshing teeth, and the driving gear 12 has external meshing teeth. The driving gear 12 is located inside the driven gear, which makes the structure of the drive assembly more compact.

[0085] In one embodiment, the air guide plate assembly further includes a drive motor bracket 13, which is fixedly connected to the first central connection portion 901. The drive motor 11 is fixed to the drive motor bracket 13, and the rotating component 10 is rotatably engaged with the drive motor bracket 13.

[0086] In this embodiment, by providing a drive motor bracket 13, the installation of the drive motor 11 is facilitated. In addition, the rotating part 10 is rotatably engaged with the drive motor bracket 13, and the drive motor bracket 13 can limit the rotation of the rotating part 10 and ensure that the rotating part 10 can rotate smoothly.

[0087] In one specific embodiment, the drive motor bracket 13 is connected to the first central connection portion 901 by screws and / or snap fasteners.

[0088] In one embodiment, the drive motor bracket 13 is provided with a mounting shaft 1301, and the rotating component 10 is provided with a mounting through hole 1004. After the mounting shaft 1301 passes through the mounting through hole 1004, the mounting shaft 1301 is fixedly connected to the first central connecting part 901.

[0089] In this embodiment, after the mounting shaft 1301 passes through the mounting through hole 1004, the mounting shaft 1301 is fixedly connected to the first central connecting part 901, which can connect the drive motor bracket 13, the rotating part 10 and the first mounting bracket 9 into a whole, thereby improving assembly stability and assembly efficiency.

[0090] In one specific embodiment, the first central connecting part 901 is provided with a screw through hole 905, and the mounting shaft is provided with a threaded hole. The screw passes through the screw through hole 905 and is tightened in the threaded hole.

[0091] In one embodiment, the rotating member 10 is located between the drive motor bracket 13 and the first central connection portion 901. The first central connection portion 901 is provided with a first limiting portion 906, which restricts the rotating member 10 from moving axially.

[0092] In this embodiment, the first limiting part 906 restricts the rotation of the rotating member 10 along the axial direction, which can prevent the rotating member 10 from moving along the axial direction and causing the rotating shaft 402 of the air guide plate 4 to disengage from the first slot 903 on the first mounting bracket 9. This avoids the air guide plate 4 from disengaging from the limiting part of the first mounting bracket 9 and thus not being able to smoothly switch between the open and closed positions.

[0093] In one specific embodiment, the first limiting part 906 is annular, and the rotating member 10 is provided with an annular stepped surface 1005, with the first limiting part 906 abutting against the annular stepped surface 1005. In another specific embodiment, the first limiting part 906 is annular, and the rotating member 10 is provided with an annular stepped surface 1005, with a certain gap between the first limiting part 906 and the annular stepped surface 1005, to prevent the rotating member 10 from moving circumferentially and causing the rotating shaft 402 of the air guide plate 4 to disengage from the first slot 903 on the first mounting bracket 9, thereby preventing the air guide plate 4 from disengaging from the limiting position of the first mounting bracket 9 and thus avoiding the inability to smoothly switch between the open and closed positions.

[0094] In one embodiment, the first central connecting portion 901 is provided with a second limiting portion 907, which restricts the drive gear 12 from moving axially.

[0095] In this embodiment, by providing a second limiting part 907, the drive gear 12 can be prevented from moving axially.

[0096] In one embodiment, the rotating component 10 and the drive motor bracket 13 are engaged by a limiting structure, which is used to limit the rotation angle of the rotating component 10.

[0097] In this embodiment, by setting a limiting structure to restrict the rotation angle of the rotating component 10, it can be ensured that the air guide plate 4 can only switch between the open position and the closed position.

[0098] In one embodiment, the limiting structure includes a limiting groove 1003 and a limiting rib. The limiting groove 1003 is provided in one of the rotating member 10 and the drive motor bracket 13, and the limiting rib is provided in the other of the rotating member 10 and the drive motor bracket 13. The limiting rib is adapted to move along the limiting groove 1003.

[0099] In this embodiment, the limiting rib and the limiting groove 1003 cooperate to limit the rotation angle of the rotating member 10, which can ensure that the air guide plate 4 can only switch between the open position and the closed position.

[0100] In one specific embodiment, when the limiting rib is located at one end of the limiting groove 1003, the plate 401 is parallel to the axis of the main air duct 1, and when the limiting rib is located at the other end of the limiting groove 1003, the air guide plate 4 is in the closed position.

[0101] In one specific embodiment, the limiting rib is provided on the drive motor bracket 13, and the limiting groove 1003 is provided on the rotating member 10.

[0102] In one embodiment not shown in the figure, the limiting rib can be provided on the rotating member 10, and the limiting groove 1003 can be provided on the drive motor bracket 13.

[0103] Specifically, such as Figure 9 As shown, the limiting groove 1003 is an arc-shaped groove.

[0104] In one embodiment, the head assembly further includes a housing 14, in which the main air duct 1, the air guide plate assembly, the drive assembly and the heating assembly are all disposed, and the first mounting bracket 9 is connected to the housing 14.

[0105] In this embodiment, by setting the outer shell 14, the main air duct 1, the air guide plate assembly, the drive assembly and the heating assembly are all located inside the outer shell 14, making the appearance more aesthetically pleasing. The first mounting bracket 9 is connected to the outer shell 14, which can fix the first mounting bracket 9 inside the outer shell 14. During assembly, the air guide plate assembly is first assembled into a whole, and then the first mounting bracket 9 in the air guide plate assembly is installed into the outer shell 14 to realize the assembly of the air guide plate assembly into the outer shell 14.

[0106] In one embodiment, the central air duct 2 and the annular air duct 3 are formed within the housing 14. In an alternative embodiment, such as Figure 12 As shown, the first mounting bracket 9 also includes an annular wall plate 908 surrounding the outside of the first annular connecting portion 902. The gap between the annular wall plate 908 and the first annular connecting portion 902 forms an annular air duct 3, and the inner side of the first annular connecting portion 902 forms a central air duct 2.

[0107] In one embodiment, the outer casing 14 includes a cylindrical casing 1402, a second central connecting portion 1404, and a second annular connecting portion 1401. The gap between the cylindrical casing 1402 and the second annular connecting portion 1401 forms an annular air duct 3. A central air duct 2 is formed on the inner side of the second annular connecting portion 1401. The second central connecting portion 1404 is correspondingly connected to the first central connecting portion 901, and the second annular connecting portion 1401 is correspondingly connected to the first annular connecting portion 902.

[0108] In this embodiment, the gap between the cylindrical shell 1402 and the second annular connecting part 1401 forms an annular air duct 3, and the inner side of the second annular connecting part 1401 forms a central air duct 2. The structure of the outer shell 14 itself forms the annular air duct 3 and the central air duct 2, making the structure simpler. The second central connecting part 1404 is correspondingly connected to the first central connecting part 901, and the second annular connecting part 1401 is correspondingly connected to the first annular connecting part 902, so that the first mounting bracket 9 can be stably connected to the outer shell 14.

[0109] In one embodiment, the drive motor 11 is disposed between the drive motor bracket 13 and the second central connection portion 1404.

[0110] In this embodiment, the drive motor 11 is disposed between the drive motor bracket 13 and the second central connection portion 1404, which can ensure effective fixation of the drive motor 11.

[0111] In one embodiment, the first annular connecting portion 902 is provided with a plurality of first slots 903 along the circumferential direction, and the second annular connecting portion 1401 is provided with a plurality of second slots 14011 along the circumferential direction. The second slots 14011 are arranged opposite to and correspond one-to-one with the first slots 903 of the first annular connecting portion 902. The air guide plate 4 is provided with a rotating shaft 402 at one end near the first annular connecting portion 902. The rotating shaft 402 is limited between the first slots 903 and the second slots 14011.

[0112] In this embodiment, by providing a second slot 14011 in the second annular connecting part 1401, when the first annular connecting part 902 is connected to the second annular connecting part 1401, the rotating shaft 402 at one end of the plate 401 is limited between the first slot 903 of the first annular connecting part 902 and the second slot 14011 of the second annular connecting part 1401. This can prevent the air guide plate 4 from falling off the first mounting bracket 9 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.

[0113] In one embodiment, the outer casing 14 is provided with a first annular air outlet grille 1403 on the side near the annular air duct 3.

[0114] In this embodiment, by setting a first annular air outlet grille 1403, the first annular air outlet grille 1403 can cover the heating components located in the annular air duct 3, making the appearance more aesthetically pleasing, and can also prevent users from accidentally putting their hands into the annular air duct 3, which could lead to burns or electric shocks and other electrical safety hazards.

[0115] like Figure 5 As shown, the first annular air outlet grille 1403 has multiple grille holes, which allow airflow to pass through.

[0116] In one specific embodiment, the first annular air outlet grille 1403 is integrally formed with the cylindrical shell 1402, and the second annular connecting part 1401 is disposed on the inner circumferential side of the first annular air outlet grille 1403.

[0117] In one specific embodiment, the outer casing 14 further includes a second central connecting portion 1404, which is connected to the second annular connecting portion 1401 by a plurality of second connecting ribs 1405.

[0118] Specifically, the second connecting rib 1405 is connected to the first connecting rib 904 by screws.

[0119] In one embodiment, the head assembly further includes a front grille 15, which is connected to the housing 14 and opposite to the central air duct 2.

[0120] In this embodiment, by setting the front net 15, the central air duct 2 and the internal air guide plate assembly can be shielded to a certain extent, and the safety of use can be ensured.

[0121] In one specific embodiment, the decorative cover 16 is fixed after the front net 15 is installed onto the outer shell 14, which will make the appearance more aesthetically pleasing.

[0122] In one embodiment, the heating component includes a second mounting bracket 18 and an annular heating element 19 disposed on the second mounting bracket 18, the second mounting bracket 18 being fixed to the end of the main air duct 1. In this embodiment, the second mounting bracket 18 facilitates the installation and fixation of the annular heating element 19.

[0123] It should be noted that, due to the relatively complex structure of the outer shell 14, if the annular heating element 19 is installed on the outer shell 14, it will result in a complex mold for forming the outer shell 14 and make the installation of the annular heating element 19 more difficult.

[0124] In one specific embodiment, the second mounting bracket 18 is connected to the end of the main air duct 1 by screws.

[0125] In one specific embodiment, the second mounting bracket 18 includes an annular support frame 1801 and an annular wall 1802. Airflow can pass through the annular support frame 1801 and enter the inner side of the annular wall 1802. The annular heating element 19 is attached to the annular support frame 1801.

[0126] In one embodiment, the second mounting bracket 18 includes an annular wall 1802, with a plurality of ribs 1803 on the side of the annular wall 1802 near the main air duct 1 and a plurality of ribs 1803 on the side of the annular wall 1802 near the annular air duct 3. An annular heating element 19 is disposed between the ribs 1803 on the side of the annular wall 1802 near the main air duct 1 and the ribs 1803 on the side of the annular wall 1802 near the annular air duct 3, and the outer periphery of the annular heating element 19 is interference-fitted with the ribs 1803.

[0127] In this embodiment, by providing multiple ribs 1803 on the side of the annular wall 1802 near the main air duct 1 and multiple ribs 1803 on the side of the annular wall 1802 near the annular air duct 3, the outer periphery of the annular heating element 19 is respectively press-fitted with the ribs 1803 on the side of the annular wall 1802 near the main air duct 1 and the ribs 1803 on the side of the annular wall 1802 near the annular air duct 3. As long as the annular heating element 19 is embedded inside the second mounting bracket 18, the annular heating element 19 can be fixed, which can improve the installation efficiency.

[0128] In one embodiment, the head assembly further includes a housing 14 and a rear screen 17, wherein the rear screen 17 is located at one end of the main air duct 1 away from the central air duct 2, or the rear screen 17 is located at one end of the housing 14 away from the central air duct 2.

[0129] In this embodiment, by setting the rear net 17, the appearance of the entire head assembly can be made more aesthetically pleasing, and safe use can be ensured.

[0130] In one embodiment, the main air duct 1 is provided with a fan blade 5 and a main motor 6 that can drive the fan blade 5 to rotate. The main motor 6 has a first working state of rotating in a first direction and a second working state of rotating in a second direction. When the main motor 6 is in the first working state, the drive component controls the air guide plate 4 to switch to the open position, and the airflow enters the main air duct 1 through the central air duct 2 and the annular air duct 3 and is then blown out. When the main motor 6 is in the second working state, the drive component controls the air guide plate 4 to switch to the closed position, and the airflow enters the annular air duct 3 through the main air duct 1 and is then blown out.

[0131] In this embodiment, when cold air is needed, the heating element is not working, the main motor 6 is in the first working state, and the drive component controls the air guide plate 4 to switch to the open position. The airflow enters the main air duct 1 through the central air duct 2 and the annular air duct 3 and is then blown out, ensuring that the cold air is strong enough and has a large air volume. When hot air is needed, the heating element is working, and the drive component controls the air guide plate 4 to switch to the closed position. After the airflow enters the main air duct 1, it flows from the main air duct 1 to the annular air duct 3, is heated by the heating element, and is then blown out. This avoids losses when the hot air is delivered and reduces heat loss during heating. Furthermore, the heating element is located in the annular air duct 3, and the air-gathering effect of the annular air duct 3 ensures that the airflow flows evenly over the heating element, achieving the optimal heating effect.

[0132] According to an embodiment of the present invention, another aspect provides an air outlet device, including the head assembly provided in the above embodiments.

[0133] When cold air is needed, the drive component controls the air guide plate 4 to switch to the open position. After the airflow enters the main air duct 1, it flows from the main air duct 1 to the central air duct 2 and the annular air duct 3, and is then blown out through the central air duct 2 and the annular air duct 3, ensuring that the cold air is strong enough and has a large air volume. When hot air is needed, the heating element works, and the drive component controls the air guide plate 4 to switch to the closed position. After the airflow enters the main air duct 1, it flows from the main air duct 1 to the annular air duct 3, and is heated by the heating element before being blown out. This avoids heat loss during hot air delivery and reduces heat loss during heating. Furthermore, the heating element is located in the annular air duct 3, and the air-gathering effect of the annular air duct 3 ensures that the airflow flows evenly over the heating element, achieving optimal heating effect.

[0134] In another embodiment, the main air duct 1 of the air outlet device is equipped with a fan blade 5 and a main motor 6 that drives the fan blade 5 to rotate. The main motor 6 has a first working state of rotating in a first direction and a second working state of rotating in a second direction. When cold air is needed, the main air duct 1 faces the user, the main motor 6 is in the first working state, the drive component controls the air guide plate 4 to switch to the open position, and the airflow enters the main air duct 1 through the central air duct 2 and the annular air duct 3 and is then blown out, which can ensure that the cold air is strong enough and the air volume is large. When hot air is needed, the annular air duct 3 faces the user, the main motor 6 is in the second working state, the drive component controls the air guide plate 4 to switch to the closed position, and the airflow enters the annular air duct 3 through the main air duct 1, is heated by the heating component and then blown out. Since the heating component is set on the air outlet side, it can avoid the loss of hot air when it is delivered and reduce the loss of heat during heating. In addition, the heating component is set in the annular air duct 3, and the air gathering effect of the annular air duct 3 makes the airflow flow evenly over the heating component, which can achieve the optimal heating effect.

[0135] Specifically in one embodiment, such as Figure 13 As shown, the air outlet equipment also includes a body support 20, and the head assembly is located on the body support 20.

[0136] In one embodiment, the air outlet device is a fan or a heater.

[0137] 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: The air duct assembly includes a main air duct (1), a central air duct (2) and an annular air duct (3), wherein the central air duct (2) and the annular air duct (3) are located at one end of the main air duct (1) and the annular air duct (3) is located on the outer periphery of the central air duct (2); 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); A drive assembly, connected to a plurality of the air guide plates (4), is capable of driving the air guide plates (4) to switch between the closed position and the open position; The heating element is located in the annular air duct (3).

2. The head assembly according to claim 1, characterized in that, The air guide plate assembly includes a first mounting bracket (9), the first mounting bracket (9) includes a first central connecting part (901) and a first annular connecting part (902), the air guide plate (4) is rotatably disposed between the first central connecting part (901) and the first annular connecting part (902), 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 (1) 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 (1) and the central air duct (2) are connected.

3. The head assembly according to claim 2, characterized in that, The first central connecting part (901) and the first annular connecting part (902) are connected by a plurality of radially arranged first connecting ribs (904). Along the radial direction of the main air duct (1), the first connecting ribs (904) gradually tilt away from the main air duct (1). The air guide plate (4) is set on the first mounting bracket (9). When the air guide plate (4) is switched to the closed position, along the radial direction of the main air duct (1), the air guide plate (4) gradually tilts away from the main air duct (1).

4. The head assembly according to claim 2, characterized in that, The first central connecting part (901) and / or the first annular connecting part (902) are provided with a plurality of first slots (903) 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 (903).

5. The head assembly according to claim 2, characterized in that, The air guide plate (4) also includes a rocker arm (403). The driving component includes a rotating component (10). The rotating component (10) is provided with a plurality of actuating grooves (1001) spaced apart along the circumference. The rocker arm (403) is located in the actuating grooves (1001). When the rotating component (10) rotates, it drives the rocker arm (403) to move, thereby driving the air guide plate (4) to rotate.

6. The head assembly according to claim 5, characterized in that, The rotating member (10) has an engaging portion (1002), and the driving assembly further includes: The drive motor (11) is fixed relative to the first central connecting part (901); The drive gear (12) is connected to the output shaft of the drive motor (11) and meshes with the meshing part (1002).

7. The head assembly according to claim 6, characterized in that, The air guide plate assembly also includes a drive motor bracket (13), which is fixedly connected to the first central connection part (901), the drive motor (11) is fixed to the drive motor bracket (13), and the rotating part (10) is rotatably engaged with the drive motor bracket (13).

8. The head assembly according to claim 7, characterized in that, The drive motor bracket (13) is provided with a mounting shaft (1301), and the rotating part (10) is provided with a mounting through hole (1004). The mounting shaft (1301) passes through the mounting through hole (1004) and is fixedly connected to the first central connecting part (901).

9. The head assembly according to claim 8, characterized in that, The rotating component (10) and the drive motor bracket (13) cooperate through a limiting structure, which is used to limit the rotation angle of the rotating component (10).

10. The head assembly according to claim 7, characterized in that, The rotating component (10) is located between the drive motor bracket (13) and the first central connecting part (901). The first central connecting part (901) is provided with a first limiting part (906), which restricts the rotating component (10) from moving axially.

11. The head assembly according to claim 7, characterized in that, The first central connecting part (901) is provided with a second limiting part (907), which restricts the drive gear (12) from moving axially.

12. The nose assembly according to any one of claims 7 to 11, characterized in that, The head assembly also includes a housing (14), the main air duct (1), the air guide plate assembly, the drive assembly and the heating assembly are all located inside the housing (14), and the first mounting bracket (9) is connected to the housing (14).

13. The head assembly according to claim 12, characterized in that, The central air duct (2) and the annular air duct (3) are formed inside the outer shell (14); or, the first mounting bracket (9) further includes an annular wall plate (908) surrounding the outside of the first annular connecting portion (902), the gap between the annular wall plate (908) and the first annular connecting portion (902) constitutes the annular air duct (3), and the inner side of the first annular connecting portion (902) constitutes the central air duct (2).

14. The head assembly according to claim 13, characterized in that, The outer casing (14) includes a cylindrical shell (1402), a second central connecting part (1404), and a second annular connecting part (1401). The gap between the cylindrical shell (1402) and the second annular connecting part (1401) forms the annular air duct (3). The inner side of the second annular connecting part (1401) forms the central air duct (2). The second central connecting part (1404) is correspondingly connected to the first central connecting part (901), and the second annular connecting part (1401) is correspondingly connected to the first annular connecting part (902).

15. The head assembly according to claim 14, characterized in that, The drive motor (11) is disposed between the drive motor bracket (13) and the second central connecting part (1404).

16. The head assembly according to claim 14, characterized in that, The first annular connecting part (902) is provided with a plurality of first slots (903) along the circumferential direction, and the second annular connecting part (1401) is provided with a plurality of second slots (14011) along the circumferential direction. The second slots (14011) are arranged opposite to the first slots (903) 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 (902). The rotating shaft (402) is limited between the first slots (903) and the second slots (14011).

17. The head assembly according to claim 13, characterized in that, The outer casing (14) is provided with a first annular air outlet grille (1403) on the side near the annular air duct (3).

18. The head assembly according to claim 12, characterized in that, The head assembly also includes a front grille (15) which is connected to the outer shell (14) and is opposite to the central air duct (2).

19. The head assembly according to any one of claims 1 to 6, 8 to 11, and 13 to 18, characterized in that, The heating component includes a second mounting bracket (18) and an annular heating element (19) disposed on the second mounting bracket (18), and the second mounting bracket (18) is fixed to the end of the main air duct (1).

20. The head assembly according to claim 19, characterized in that, The second mounting bracket (18) includes an annular wall (1802), and the annular wall (1802) is provided with a plurality of ribs (1803). The outer periphery of the annular heating element (19) is interference-fitted with the ribs (1803).

21. The head assembly according to any one of claims 1 to 6, 8 to 11, and 13 to 18, characterized in that, The head assembly also includes a housing (14) and a rear screen (17), wherein the rear screen (17) is located at one end of the main air duct (1) away from the central air duct (2), or the rear screen (17) is located at one end of the housing (14) away from the central air duct (2).

22. The head assembly according to any one of claims 1 to 6, 8 to 11, and 13 to 18, characterized in that, The main air duct (1) is provided with a fan blade (5) and a main motor (6) that can drive the fan blade (5) to rotate. The main motor (6) has a first working state of rotating in a first direction and a second working state of rotating in a second direction. When the main motor (6) is in the first working state, the drive component controls the air guide plate (4) to switch to the open position, and the airflow enters the main air duct (1) through the central air duct (2) and the annular air duct (3) and is then blown out; when the main motor (6) is in the second working state, the drive component controls the air guide plate (4) to switch to the closed position, and the airflow enters the annular air duct (3) through the main air duct (1) and is then blown out.

23. An air outlet device, characterized in that, include: The nose assembly according to any one of claims 1 to 22.

24. The air outlet device according to claim 23, characterized in that, The air outlet device is a fan or a heater.

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