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 central air duct and an annular air duct, and the main air duct is internally provided with fan blades and a main motor capable of driving the fan blades to rotate; the main motor has a first working state rotating towards a first direction and a second working state rotating towards a second direction, 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.

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] Some fans in related technologies have the function of blowing cold air and hot air. Usually, the heating element is placed near the rear grille. The heating element is far from the air outlet, and there is loss when the hot air is sent out. When blowing cold air, because the heating element is located in the air duct, a certain amount of wind resistance is formed, resulting in the cold air not being strong enough and the air volume not being large enough. 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 air resistance caused by the heat source to the cold 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 main air duct is equipped with a fan blade and a main motor that can drive 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. The central air duct and the annular air duct are located at one end of the main 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 component, 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; 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.

[0005] Beneficial effects: When cold air is needed, the heating element is not working. The drive component controls the air guide plate to switch to the open position, putting the main motor in its first working state. The fan blades rotate in the first direction, driving airflow. The airflow simultaneously enters the main air duct through the central air duct and the annular air duct, and then is blown out through the main air duct, ensuring sufficiently strong and large air volume of cold air. When hot air is needed, the heating element is working, and the drive component controls the air guide plate to switch to the closed position, putting the main motor in its second working state. The fan blades rotate in the second direction, driving airflow. The airflow enters the main air duct, then enters the annular air duct, and is blown out through the annular air duct. Because the heating element is close to the air outlet, it avoids heat loss during hot air delivery, reducing heat loss during heating. Furthermore, the heating element is located in the annular air duct, and the airflow concentration effect of the annular air duct ensures that the airflow flows evenly over the heating element, achieving optimal heating effect.

[0006] In one alternative embodiment, the air duct assembly includes a cover plate disposed at one end of the main air duct, the cover plate having the central air duct and the annular air duct.

[0007] Beneficial effects: The cover plate is equipped with a central air duct and an annular air duct. After the cover plate is connected to the main air duct, the central air duct and the annular air duct can be connected to the main air duct at the same time. The air duct assembly is divided into the main air duct and the cover plate, which facilitates the processing of each component.

[0008] In one optional embodiment, the cover plate includes a first central connecting portion, a first annular wall plate, and a second annular wall plate. The inner side of the first annular wall plate forms a central air duct, and the gap between the first annular wall plate and the second annular wall plate forms an annular air duct.

[0009] In one optional embodiment, the head assembly further includes a housing, the main air duct and the cover plate are both disposed within the housing, the air guide plate assembly is movably disposed within the housing and located on the side of the housing facing the central air duct; and / or, the air guide plate assembly is movably disposed within the central air duct and located on the side of the central air duct away from the main air duct.

[0010] Beneficial effects: By setting up an outer shell, the main air duct and cover plate are all located inside the outer shell, resulting in good appearance consistency of the entire head assembly. The air guide plate assembly can be movably located inside the outer shell and on the side of the outer shell facing the central air duct, or the air guide plate assembly can be movably located in the central air duct and on the side of the central air duct away from the main air duct, making it easier to assemble the air guide plate assembly.

[0011] In one optional embodiment, the first central connecting portion is connected to the first annular wall panel via a first connecting rib. Along the radial direction of the main air duct, the first connecting rib gradually tilts away from the main air duct. The air guide plate is disposed between the cover plate and the outer shell. 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.

[0012] Beneficial effects: Along the radial direction of the main air duct, the first connecting rib gradually tilts away from the main air duct, and the first central connecting part is closer to the main air duct, creating a larger space between the cover plate and the outer shell to accommodate the installation of the air guide plate assembly, avoiding the unsightly appearance caused by the outer shell protruding outwards. Secondly, the air guide plate assembly is installed between the cover plate and the outer shell, and along the radial direction of the main air duct, the first connecting rib gradually tilts away from the main air duct. When the air guide plate is switched to the closed position, along the radial direction of the main air duct, the air guide plate also gradually tilts away from the main air duct. The tilted air guide plate makes it easier for the airflow from the main air duct to flow into the annular air duct, reducing airflow resistance and avoiding airflow dead zones.

[0013] In one optional embodiment, the outer casing includes a second central connecting portion and a first annular connecting portion, and the air guide plate is rotatably disposed between the second central connecting portion and the first annular connecting portion. The air guide plate includes 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 to block the communication 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 that the main air duct and the central air duct are connected.

[0014] Beneficial effects: When the air guide plate is in the closed position, the plates of each air guide plate are distributed on the same plane or annular cone surface or adjacent plates overlap at least partially, which can block the airflow through the central air duct. When the air guide plate is in the open position, an air-proof opening is formed between adjacent plates, allowing the airflow to pass through the air-proof opening between the plates.

[0015] In one optional embodiment, the second 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.

[0016] 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.

[0017] In one optional embodiment, the air guide plate further includes a rocker arm and a plate body. The plate bodies have a closed position for closing the central air duct and an open position for opening the central air duct. The drive assembly includes a rotating member with a plurality of actuating slots spaced apart circumferentially. The rocker arm is disposed in the actuating slots. When the rotating member rotates, it drives the rocker arm to move, thereby driving the plate body to rotate between the closed position and the open position.

[0018] 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.

[0019] In one optional embodiment, the rotating element is a driven gear, and the drive assembly further includes: A drive motor is disposed on the cover plate or the housing; The drive gear is connected to the output shaft of the drive motor and meshes with the meshing part.

[0020] 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. In turn, it drives each rocker arm to rotate to a certain extent. The rotation of the rocker arm can drive the corresponding plate to flip. Thus, the drive assembly drives each air guide plate to flip at the same time. The drive assembly has a simple structure and reliable transmission.

[0021] In one alternative embodiment, the drive assembly includes a fixing plate, the housing includes a second central connecting portion fixedly connected to the fixing plate, and the drive motor is fixed between the second central connecting portion and the fixing plate; or, the cover plate includes a first central connecting portion fixedly connected to the fixing plate, and the drive motor is fixed between the first central connecting portion and the fixing plate.

[0022] Beneficial effect: By setting a fixing plate, the position of the drive motor can be effectively fixed.

[0023] In one optional embodiment, the drive assembly includes a fixed plate, and the drive motor is fixed between the housing and the fixed plate, or the drive motor is fixed between the central air duct and the fixed plate. The rotating component cooperates with the fixed plate through a limiting structure, which is used to limit the rotation angle of the rotating component.

[0024] 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.

[0025] In one optional embodiment, the limiting structure includes a limiting groove and a limiting rib. The limiting groove is disposed in one of the rotating member and the fixed plate, and the limiting rib is disposed in the other of the rotating member and the fixed plate. The limiting rib is adapted to move along the limiting groove.

[0026] Beneficial effects: The combination of the limiting rib and the limiting groove can limit the rotation angle of the rotating parts, ensuring that the air guide plate can only switch between the open and closed positions.

[0027] In one optional embodiment, the fixing plate is provided with one of a mounting through hole and a mounting shaft, and the center of the rotating member is provided with the other of a mounting through hole and a mounting shaft, wherein the mounting shaft is located in the mounting through hole.

[0028] Beneficial effects: The mounting shaft and mounting through hole fit together to position the rotating parts, ensuring that the rotating parts rotate around the axis of the mounting shaft.

[0029] In one optional embodiment, the fixing plate is provided with a mounting shaft, the center of the rotating component is provided with a mounting through hole, and the mounting shaft is located in the mounting through hole and then fixedly connected to the cover plate.

[0030] In one alternative embodiment, the rotating member is positioned between the cover plate and the fixed plate, and the cover plate is provided with a first limiting portion that restricts the rotating member from moving axially.

[0031] In one alternative embodiment, the cover plate is provided with a second limiting portion, which restricts the drive gear from moving axially.

[0032] In one optional embodiment, one of the fixing plate and the second central connecting portion is provided with a first limiting member and the other is provided with a second limiting member; or one of the fixing plate and the first central connecting portion is provided with a first limiting member and the other is provided with a second limiting member, wherein one of the first limiting member and the second limiting member is a limiting rib and the other is a limiting rib, and the limiting rib and the limiting rib cooperate with each other to limit the movement.

[0033] In one optional embodiment, the main air duct is provided with a guide surface at one end facing the cover plate, and the outer edge of the guide surface is provided with a plurality of first connecting parts, and the cover plate is provided with a plurality of second connecting parts, and the first connecting parts and the second connecting parts are fixedly connected.

[0034] Beneficial effects: By setting a guide surface, the main air duct and the annular air duct can be smoothly connected. By setting a first connecting part on the outer edge of the guide surface and a corresponding second connecting part on the cover plate, the main air duct and the cover plate can be connected together.

[0035] In one alternative embodiment, the housing includes an annular grille corresponding to the annular air duct.

[0036] Beneficial effects: By setting up a ring-shaped grille, the heating components located in the ring-shaped air duct can be concealed, making the appearance more aesthetically pleasing.

[0037] In one alternative embodiment, the head assembly further includes a first grille and / or a second grille, wherein the first grille is disposed on the side of the main air duct away from the central air duct, and the second grille is connected to the housing and disposed corresponding to the central air duct, or the second grille is connected to the cover plate and disposed corresponding to the central air duct.

[0038] Beneficial effects: By setting the first grille and / or the second grille, the appearance of the entire head assembly can be made more aesthetically pleasing, the internal air guide plate assembly can be partially obscured, and the safety of use can be ensured.

[0039] In one alternative implementation, the main air duct is connected to an oscillating motor.

[0040] Beneficial effects: The oscillating motor allows the head assembly to oscillate, enabling a wider airflow range. When blowing cold air, the first grille faces the user; when blowing hot air, the second grille of the oscillating assembly faces the user.

[0041] Secondly, the present invention also provides an air outlet device, comprising: The aforementioned head assembly.

[0042] Beneficial effects: When cold air is needed, the drive component controls the air guide plate to open, putting the main motor in its first operating state. The heating element is not working, and the oscillating motor aligns the first grille towards the user, causing the fan blades to rotate in the first direction. This drives the airflow from the back to the front of the unit. The airflow simultaneously enters the main duct through the central and annular ducts, and then exits through the first grille, ensuring a strong and large volume of cold air. When hot air is needed, the oscillating motor aligns the second grille towards the user, activating the heating element. The drive component controls the air guide plate to close, putting the main motor in its second operating state. The fan blades rotate in the second direction, driving the airflow from the front to the back of the unit. The airflow passes through the first grille and enters the main duct, then the annular duct, where it exits. Because the heating element is close to the outlet, heat loss during hot air delivery is avoided, reducing heat loss during heating. Furthermore, the annular duct's air-gathering effect ensures even airflow over the heating element, achieving optimal heating performance.

[0043] In one alternative implementation, the air outlet device is a fan or a heater. Attached Figure Description

[0044] 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.

[0045] Figure 1 This is a schematic diagram of a head unit assembly according to an embodiment of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of a head unit assembly according to an embodiment of the present invention. Figure 2 ; Figure 3 This is a cross-sectional view of a head assembly according to an embodiment of the present invention; Figure 4 This is a schematic diagram showing the airflow direction when cold air is blown. Figure 5 This is a schematic diagram showing the airflow direction when hot air is blown. Figure 6 This is a schematic diagram of a head assembly after the outer casing has been removed, according to an embodiment of the present invention; Figure 7 This is a rear view of a head assembly according to an embodiment of the present invention with the rear mesh removed and the air guide plate in the closed position; Figure 8 for Figure 7 Enlarged view of point A in the middle; Figure 9 A rear view of a head unit assembly according to an embodiment of the present invention with the rear mesh removed and the air guide plate in the open position; Figure 10 This is a schematic diagram of the air guide plate; Figure 11 This is a schematic diagram of a rotating component; Figure 12 A schematic diagram of the main air duct; Figure 13 This is a schematic diagram of the outer casing; Figure 14 This is a schematic diagram of the cover plate; Figure 15 This is a schematic diagram of the fixing plate; Figure 16 This is a schematic diagram of the heating element.

[0046] Explanation of reference numerals in the attached figures: 1. Main air duct; 101. Guide surface; 102. First connecting part; 2. Fan blade; 3. Main motor; 4. First grille; 5. Air guide plate; 501. Plate body; 502. Rotating shaft; 503. Rocker arm; 6. Heating component; 601. Annular support structure; 602. Heating wire; 7. Cover plate; 701. Central air duct; 702. Annular air duct; 703. First central connecting part; 704. First annular wall panel; 705. Second annular wall panel; 706. Annular rib; 707. First connecting rib; 708. Second connecting rib; 709. First screw through hole; 710. Second connecting part; 711. First limiting part; 712. Second limiting part; 713. Third screw through hole 714. Hole; 8. Second slot; 8. Outer shell; 801. Housing; 802. Second central connecting part; 803. First annular connecting part; 804. Third connecting rib; 805. First screw post; 806. First slot; 807. Second screw post; 808. Annular grille; 809. Limiting rib; 9. Rotating component; 901. Actuating groove; 902. Limiting groove; 903. Mounting through hole; 904. Engaging part; 905. Annular stepped surface; 10. Drive motor; 11. Drive gear; 12. Fixing plate; 1201. Second screw through hole; 1202. Limiting rib; 1203. Mounting shaft; 1204. Limiting rib; 13. Second grille; 14. Oscillating motor. Detailed Implementation

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] Some fans in related technologies have the function of blowing cold air and hot air. Usually, the heating element is placed near the rear grille. The heating element is far from the air outlet, and there is loss when the hot air is sent out. When blowing cold air, because the heating element is located in the air duct, a certain amount of wind resistance is formed, resulting in the cold air not being strong enough and the air volume not being large enough.

[0052] The following is combined with Figures 1 to 16 The following describes embodiments of the present invention.

[0053] 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 6.

[0054] The air duct assembly includes a main air duct 1, a central air duct 701, and an annular air duct 702. The main air duct 1 is equipped with a fan blade 2 and a main motor 3 that can drive the fan blade 2 to rotate. The main motor 3 has a first working state of rotating in a first direction and a second working state of rotating in a second direction. The central air duct 701 and the annular air duct 702 are located at one end of the main air duct 1. The air guide plate assembly includes multiple air guide plates 5, which have a closed position for closing the central air duct 701 and an open position for opening the central air duct 701. The drive assembly is connected to the multiple air guide plates 5 and can drive the air guide plates 5 to switch between the closed position and the open position. The heating component 6 is located in the annular air duct 702. When the main motor 3 is in the first working state, the drive component controls the air guide plate 5 to switch to the open position, and the airflow enters the main air duct 1 through the central air duct 701 and the annular air duct 702 and is then blown out; when the main motor 3 is in the second working state, the drive component controls the air guide plate 5 to switch to the closed position, and the airflow enters the annular air duct 702 through the main air duct 1 and is then blown out.

[0055] In this embodiment, when cold air is needed, the heating element 6 is not working, the drive element controls the air guide plate 5 to switch to the open position, so that the main motor 3 is in the first working state, and the fan blade 2 rotates in the first direction, such as... Figure 4As shown, the airflow is driven to move, and the airflow simultaneously enters the main air duct 1 through the central air duct 701 and the annular air duct 702, and then is blown out through the main air duct 1, ensuring that the cold air is strong enough and the air volume is large. When hot air is needed, the drive component controls the air guide plate 5 to switch to the closed position, the heating component 6 works, and the main motor 3 is in the second working state, and the fan blade 2 rotates in the second direction, as shown. Figure 5 As shown, the airflow is driven to flow, and the airflow enters the main air duct 1 and then enters the annular air duct 702. It is blown out through the annular air duct 702. Since the heating element 6 is close to the air outlet side, the loss of hot air can be avoided when it is delivered, and the heat loss during heating can be reduced. Furthermore, the heating element 6 is located in the annular air duct 702. The air gathering effect of the annular air duct 702 makes the airflow flow evenly through the heating element 6, which can achieve the optimal heating effect.

[0056] It should be noted that "multiple" means at least two, and "multiple air guides 5" specifically refers to at least two air guides 5.

[0057] In one specific embodiment, the first direction is one of a counterclockwise direction and a clockwise direction, and the second direction is the other of a counterclockwise direction and a clockwise direction.

[0058] In one specific embodiment, the main motor 3 is in a first working state, and the fan blade 2 rotates in a first direction, driving the airflow from the back of the head assembly to the front; the main motor 3 is in a second working state, and the fan blade 2 rotates in a second direction, driving the airflow from the front of the head assembly to the back.

[0059] Specifically in one embodiment, such as Figure 16 As shown, the heating component 6 includes an annular support structure 601 and a heating wire 602 disposed within the annular support structure 601 and extending circumferentially.

[0060] In one embodiment, the air duct assembly includes a cover plate 7, which is disposed at one end of the main air duct 1. The cover plate 7 is provided with a central air duct 701 and an annular air duct 702.

[0061] In this embodiment, the cover plate 7 is provided with a central air duct 701 and an annular air duct 702. After the cover plate 7 is connected to the main air duct 1, the central air duct 701 and the annular air duct 702 can be connected to the main air duct 1 at the same time. The air duct assembly is divided into the main air duct 1 and the cover plate 7, which facilitates the processing of each component.

[0062] Specifically, such as Figure 14 As shown, the cover plate 7 includes a first central connecting part 703, a first annular wall plate 704 and a second annular wall plate 705. The inner side of the first annular wall plate 704 forms a central air duct 701, and the gap between the first annular wall plate 704 and the second annular wall plate 705 forms an annular air duct 702.

[0063] Further reference Figure 14 The inner side of the first annular wall panel 704 is connected with annular ribs 706. The first annular wall panel 704 and the first central connecting part 703 are connected by a plurality of radially arranged first connecting ribs 707. The second annular wall panel 705 and the first annular wall panel 704 are connected by a plurality of second connecting ribs 708.

[0064] In one embodiment, the head assembly further includes a housing 8, the main air duct 1 and the cover plate 7 are both disposed inside the housing 8, the air guide plate assembly is movably disposed inside the housing 8 and located on the side of the housing 8 facing the central air duct 701, and / or, the air guide plate assembly is movably disposed in the central air duct 701 and located on the side of the central air duct 701 away from the main air duct 1.

[0065] In this embodiment, by setting the outer shell 8, the main air duct 1 and the cover plate 7 are both located inside the outer shell 8, the appearance of the entire head assembly is consistent, the air guide plate assembly is movably located on the side of the central air duct 701 away from the main air duct 1, and / or the air guide plate assembly is movably located on the central air duct 701 and on the side of the central air duct 701 away from the main air duct 1, which makes it easier to assemble the air guide plate assembly.

[0066] In one specific embodiment, the air guide plate assembly is mounted on the housing 8.

[0067] In an alternative embodiment, the air deflector assembly can be mounted on the cover plate 7.

[0068] In one specific embodiment, the air guide plate assembly is movably disposed between the housing 8 and the cover plate 7.

[0069] In one embodiment, the first central connecting part 703 is connected to the first annular wall panel 704 via the first connecting rib 707. Along the radial direction of the main air duct 1, the first connecting rib 707 gradually tilts away from the main air duct 1. The air guide plate 5 is disposed between the cover plate 7 and the outer shell 8. When the air guide plate 5 is switched to the closed position, along the radial direction of the main air duct 1, the air guide plate 5 gradually tilts away from the main air duct 1.

[0070] In this embodiment, along the radial direction of the main air duct 1, the first connecting rib 707 gradually tilts away from the main air duct 1, and the first central connecting part 703 is closer to the main air duct, so that a larger space is formed between the cover plate 7 and the outer shell 8 to accommodate the installation of the air guide plate assembly, avoiding the unsightly appearance caused by the outer shell 8 protruding outward. Secondly, the air guide plate assembly is limited and installed between the cover plate 7 and the outer shell 8. Along the radial direction of the main air duct 1, the first connecting rib 707 gradually tilts away from the main air duct 1. When the air guide plate 5 is switched to the closed position, along the radial direction of the main air duct 1, the air guide plate 5 also gradually tilts away from the main air duct 1. The tilted air guide plate 5 makes it easier for the airflow from the main air duct 1 to flow into the annular air duct 702, reducing airflow resistance and avoiding airflow dead zones.

[0071] Specifically, such as Figure 13 As shown, the outer casing 8 includes a cylindrical housing 801 that surrounds the main air duct 1 and the cover plate 7.

[0072] In one embodiment, the outer casing 8 includes a second central connecting portion 802 and a first annular connecting portion 803, and the air guide plate 5 is rotatably disposed between the second central connecting portion 802 and the first annular connecting portion 803. The air guide plate 5 includes a plate body 501, such as... Figure 7 As shown, when the air guide plate 5 is in the closed position, the plate body 501 of each air guide plate 5 is formed on the same plane or an annular cone surface or adjacent plate bodies 501 at least partially overlap to block the connection between the main air duct 1 and the central air duct 701. When the air guide plate 5 is in the open position, an air vent is formed between adjacent plate bodies 501 to allow airflow to pass through so that the main air duct 1 and the central air duct 701 can be connected.

[0073] In this embodiment, when the air guide plate 5 is in the closed position, the plate body 501 of each air guide plate 5 is formed on the same plane or an annular cone surface or adjacent plate bodies 501 at least partially overlap, which can block the airflow from passing through the central air duct 701. When the air guide plate 5 is in the open position, an air-proof opening is formed between adjacent plate bodies 501 to allow the airflow to pass through the air-proof opening between the plate bodies 501.

[0074] In this embodiment, the plate 501 is a flat plate. When the plate 501 is a curved plate, when the air guide plate 5 is in the open position, the airflow passes through the space between two adjacent plates 501.

[0075] In a preferred embodiment, such as Figure 9 As shown, when the air guide plate 5 is in the open position, the plate body 501 is parallel to the axis of the outer shell 8.

[0076] In an alternative embodiment, the air guide plate 5 can be unfolded and retracted like a folding fan, closing the central air duct 701 when unfolded and opening the central air duct 701 when retracted.

[0077] In one specific embodiment, the air guide plate 501 is fan-shaped.

[0078] In one specific embodiment, the outer casing 8 and the cover plate 7 are connected by screws.

[0079] Specifically, the first annular wall panel 704 and the first central connecting part 703 are connected by a plurality of radially arranged first connecting ribs 707. The end of the first connecting rib 707 is provided with a first screw through hole 709. The second central connecting part 802 and the first annular connecting part 803 are connected by a plurality of radially arranged third connecting ribs 804. The end of the third connecting rib 804 is provided with a first screw post 805. The first screw post 805 and the first screw through hole 709 correspond one-to-one. After the screw passes through the first screw through hole 709, it is tightened in the first screw post 805 to fix the outer shell 8 and the cover plate 7.

[0080] In one embodiment, such as Figure 13 As shown, the second central connecting part 802 and / or the first annular connecting part 803 are provided with a plurality of first slots 806 in the circumferential direction. The air guide plate 5 includes a rotating shaft 502 located at at least one end of the plate body 501, and the rotating shaft 502 is disposed in the first slot 806.

[0081] In this embodiment, the air guide plate 5 includes a rotating shaft 502 located at at least one end of the plate body 501. The rotating shaft 502 is disposed in the first slot 806, which facilitates the positioning and installation of the air guide plate 5, improves assembly efficiency, and also allows the air guide plate 5 to switch between the open and closed positions under the limitation of the first slot 806.

[0082] Preferably, both the second central connecting portion 802 and the first annular connecting portion 803 are provided with a plurality of first slots 806 along the circumferential direction. The first slots 806 of the second central connecting portion 802 correspond one-to-one with the first slots 806 of the first annular connecting portion 803. The air guide plate 5 includes rotating shafts 502 located at both ends of the plate body 501, and the rotating shafts 502 at both ends are disposed in the corresponding first slots 806. Specifically, the rotating shaft 502 at one end of the plate body 501 is disposed in the first slot 806 on the second central connecting portion 802, and the rotating shaft 502 at the other end of the plate body 501 is disposed in the first slot 806 on the first annular connecting portion 803.

[0083] In one embodiment, multiple first slots 806 may be provided only circumferentially on the second central connecting portion 802. In another embodiment, multiple first slots 806 may be provided only circumferentially on the first annular connecting portion 803.

[0084] In other alternative embodiments, through holes may be provided in the second central connecting portion 802 and the first annular connecting portion 803, and the rotating shaft 502 may be rotatably disposed in the through holes.

[0085] In one specific embodiment, the cover plate 7 is provided with a second slot 714, which corresponds one-to-one with the first slot 806 provided on the first annular connecting part 803. When the cover plate 7 is assembled with the outer shell 8, the rotating shaft 502 of the plate body 501 near the first annular connecting part 803 is limited between the second slot 714 and the first slot 806 on the first annular connecting part 803. This can prevent the air guide plate 5 from falling off the outer shell 8, and can also effectively prevent the rotating shaft 502 of the air guide plate 5 from moving up, down, left, and right significantly when it rotates.

[0086] Further reference Figure 14 The inner side of the first annular wall panel 704 is connected to an annular rib 706, and the second slot 714 is provided on the annular rib 706.

[0087] In one embodiment, such as Figure 8 and Figure 10 The air guide plate 5 also includes a rocker arm 503 and a plate body 501. Multiple plates 501 have a closed position for closing the central air duct 701 and an open position for opening the central air duct 701. The drive assembly includes a rotating member 9. The rotating member 9 is provided with multiple actuating slots 901 spaced apart along the circumference. The rocker arm 503 passes through the actuating slots 901. When the rotating member 9 rotates, it drives the rocker arm 503 to move, thereby driving the plate body 501 to rotate between the closed position and the open position.

[0088] In this embodiment, the rocker arm 503 is located in the actuation groove 901, and the rotating shafts 502 at both ends of the plate 501 are located in the first slots 806, allowing for quick assembly of the air guide plate 5. When the rotating component 9 rotates, it drives the rocker arm 503 to move, thereby causing the air guide plate 5 to rotate around its rotating shaft 502. Therefore, the rotation of one rotating component 9 can simultaneously drive multiple air guide plates 5 to rotate together, resulting in a simpler structure and lower cost.

[0089] Specifically, the joystick 503 and the plate 501 are not coplanar. Specifically, the rocker arm 503 is connected to the rotating shaft 502 located in the first slot 806 on the second central connecting part 802. Alternatively, the rocker arm 503 can be connected to one end of the plate body 501.

[0090] Specifically, the air guide plate 5 and the drive assembly can be installed on the housing 8, the cover plate 7, or the main air duct 1.

[0091] In one embodiment, the rotating member 9 has a meshing portion 904, and the drive assembly further includes a drive motor 10 and a drive gear 11. The drive motor 10 is disposed on the cover plate 7 or the housing 8; the drive gear 11 is connected to the output shaft of the drive motor 10 and meshes with the meshing portion 904.

[0092] In this embodiment, when the drive motor 10 is working, it drives the drive gear 11 to rotate. The drive gear 11 meshes with the meshing part 904 of the rotating part 9, thereby driving the rotating part 9 to rotate. This, in turn, drives each rocker arm 503 to rotate to a certain extent. The rotation of the rocker arm 503 can drive the corresponding plate 501 to flip, thereby driving the drive assembly to simultaneously drive each air guide plate 5 to flip. The drive assembly has a simple structure and reliable transmission.

[0093] In one specific embodiment, the meshing part 904 has internal meshing teeth, and the driving gear 11 has external meshing teeth. The driving gear 11 is located inside the rotating member 9, thereby making the structure of the drive assembly more compact.

[0094] In one embodiment, the drive motor 10 is disposed on the housing 8, and specifically disposed on the second central connecting portion 802 of the housing 8.

[0095] In one embodiment, the drive assembly includes a fixing plate 12, and the housing 8 includes a second central connecting portion 802, which is fixedly connected to the fixing plate 12. The drive motor 10 is fixed between the second central connecting portion 802 and the fixing plate 12. Alternatively, the cover plate 7 includes a first central connecting portion 703, which is fixedly connected to the fixing plate 12. The drive motor 10 is fixed between the first central connecting portion 703 and the fixing plate 12.

[0096] In this embodiment, the position of the drive motor 10 can be effectively fixed by setting the fixing plate 12.

[0097] In one specific embodiment, the fixing plate 12 is connected to the second central connecting part 802 by screws and / or snaps.

[0098] Specifically, such as Figure 13 and Figure 15 As shown, the fixing plate 12 is provided with a second screw through hole 1201, and the second central connecting part 802 is provided with a second screw post 807. The screw passes through the second screw through hole 1201 and is tightened in the second screw post 807 to fix the fixing plate 12 on the second central connecting part 802.

[0099] In one embodiment, the rotating member 9 and the fixed plate 12 are engaged by a limiting structure, which is used to limit the rotation angle of the rotating member 9.

[0100] In this embodiment, by setting a limiting structure to restrict the rotation angle of the rotating component 9, it can be ensured that the air guide plate 5 can only switch between the open position and the closed position.

[0101] In one embodiment, the limiting structure includes a limiting groove 902 and a limiting rib 1202. The limiting groove 902 is disposed in one of the rotating member 9 and the fixed plate 12, and the limiting rib 1202 is disposed in the other of the rotating member 9 and the fixed plate 12. The limiting rib 1202 is adapted to move along the limiting groove 902.

[0102] In this embodiment, the limiting rib 1202 and the limiting groove 902 cooperate to limit the rotation angle of the rotating member 9, which can ensure that the air guide plate 5 can only switch between the open position and the closed position.

[0103] In one specific embodiment, when the limiting rib 1202 is located at one end of the limiting groove 902, the air guide plate 5 is parallel to the axis of the central air duct 701; when the limiting rib 1202 is located at the other end of the limiting groove 902, the air guide plate 5 is in the closed position.

[0104] Specifically in one embodiment, such as Figure 15 As shown, the limiting rib 1202 is provided on the fixing plate 12, as follows. Figure 11 As shown, the limiting groove 902 is provided on the rotating part 9.

[0105] In one embodiment not shown in the figure, the limiting rib 1202 can be provided on the rotating member 9, and the limiting groove 902 can be provided on the fixed plate 12.

[0106] Specifically, the limiting groove 902 is an arc-shaped groove.

[0107] In one embodiment, the fixed plate 12 is provided with one of a mounting through hole 903 and a mounting shaft 1203, and the center of the rotating member 9 is provided with the other of a mounting through hole 903 and a mounting shaft 1203, with the mounting shaft 1203 located in the mounting through hole 903.

[0108] In this embodiment, the mounting shaft 1203 and the mounting through hole 903 cooperate to position the rotating member 9, ensuring that the rotating member 9 rotates around the axis of the mounting shaft 1203.

[0109] Specifically in one embodiment, such as Figure 15 As shown, the mounting shaft 1203 is mounted on the fixing plate 12, as... Figure 11 As shown, the center of the rotating part 9 is provided with a mounting hole 903, and the mounting shaft 1203 is located in the mounting hole 903 and then fixedly connected to the cover plate 7.

[0110] In this embodiment, the mounting shaft 1203 is located in the mounting through hole 903 and is fixedly connected to the cover plate 7. Therefore, the fixing plate 12, the outer shell 8, the rotating part 9 and the cover plate 7 can be assembled together, which can improve the assembly stability.

[0111] Specifically, the cover plate 7 has a third screw through hole 713 at its center, and the mounting shaft 1203 has a threaded hole. The screw passes through the third screw through hole 713 and is tightened in the threaded hole.

[0112] In one embodiment, the rotating member 9 is positioned between the cover plate 7 and the fixed plate 12. The cover plate 7 is provided with a first limiting part 711, which restricts the rotating member 9 from moving axially.

[0113] In this embodiment, by providing a first limiting part 711 on the cover plate 7, it is possible to prevent the rotating part 9 from moving axially and causing the rotating shaft 502 of the air guide plate 5 to disengage from the receiving space formed by the second slot 714 and the first slot 806 on the first annular connecting part 803. This avoids the air guide plate 5 from disengaging from the limiting parts of the outer shell 8 and the cover plate 7, thus preventing the air guide plate 5 from smoothly switching between the open and closed positions and improving assembly stability.

[0114] In one specific embodiment, the rotating member 9 is provided with an annular stepped surface 905, and the first limiting part 711 is annular, abutting against the annular stepped surface 905. In another specific embodiment, the first limiting part 711 is annular, the rotating member 9 is provided with an annular stepped surface 905, and there is a certain gap between the first limiting part 711 and the annular stepped surface 905 to prevent the rotating member 9 from moving axially and causing the rotating shaft 502 of the air guide plate 5 to disengage from the receiving space formed by the second slot 714 and the first slot 806 on the first annular connecting part 803, thereby preventing the air guide plate 5 from disengaging from the limiting of the outer shell 8 and the cover plate 7 and thus failing to smoothly switch between the open and closed positions.

[0115] In one embodiment, the cover plate 7 is provided with a second limiting part 712, which restricts the drive gear 11 from moving axially.

[0116] In this embodiment, by providing a second limiting part 712 on the cover plate 7, the drive gear 11 can be prevented from moving axially, thereby improving assembly stability.

[0117] In one embodiment, one of the fixing plate 12 and the second central connecting portion 802 is provided with a first limiting member and the other is provided with a second limiting member; or one of the fixing plate 12 and the first central connecting portion 703 is provided with a first limiting member and the other is provided with a second limiting member, one of the first limiting member and the second limiting member is a limiting rib 1204 and the other is a limiting rib 809, and the limiting rib 1204 and the limiting rib 809 cooperate with each other to limit the movement.

[0118] In this embodiment, the limiting rib 1204 and the limiting rib 809 work together to limit the assembly of the fixing plate 12.

[0119] Specifically, the outer peripheral wall of the fixing plate 12 is provided with multiple limiting ribs 1204, and the second central connecting part 802 is provided with multiple limiting ribs 809. One limiting rib 1204 is inserted between two adjacent limiting ribs 809 on the second central connecting part 802.

[0120] In one embodiment, the main air duct 1 is provided with a guide surface 101 at one end facing the cover plate 7, and the outer edge of the guide surface 101 is provided with a plurality of first connecting parts 102, and the cover plate 7 is provided with a plurality of second connecting parts 710, and the first connecting parts 102 and the second connecting parts 710 are fixedly connected.

[0121] In this embodiment, by setting the guide surface 101, the main air duct 1 and the annular air duct 702 can be smoothly connected. By setting the first connecting part 102 on the outer edge of the guide surface 101 and the cover plate 7 correspondingly setting the second connecting part 710, the main air duct 1 and the cover plate 7 can be connected together.

[0122] In one specific embodiment, the first connecting part 102 is a screw through hole, and the second connecting part 710 is a screw post.

[0123] In other alternative embodiments, the first connecting part 102 may be a snap fastener, and the second connecting part 710 may be a latch, with the snap fastener and the latch engaging.

[0124] In one embodiment, the housing 8 includes an annular grille 808, which corresponds to the annular air duct 702.

[0125] In this embodiment, by setting an annular grille 808, the annular grille 808 can cover the heating component 6 located in the annular air duct 702, 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.

[0126] like Figure 9 As shown, the annular grille 808 has multiple through holes to allow airflow to pass through.

[0127] In one specific embodiment, the annular grille 808 is integrally formed with the housing 801, and the first annular connecting part 803 is disposed on the inner side of the annular grille 808.

[0128] In one embodiment, the head assembly further includes a first grille 4 and / or a second grille 13. The first grille 4 is located on the side of the main air duct 1 away from the central air duct 701, and the second grille 13 is connected to the housing 8 and correspondingly arranged to the central air duct 701, or the second grille 13 is connected to the cover plate 7 and correspondingly arranged to the central air duct 701.

[0129] In this embodiment, by setting the first grille 4 and / or the second grille 13, the appearance of the entire head assembly can be made more aesthetically pleasing, the internal air guide plate assembly can be partially obscured, and the safety of use can be ensured.

[0130] Specifically, when the main motor 3 is in the first working state, the fan blade 2 rotates in the first direction, causing the airflow to flow from the back of the head assembly to the front. The airflow enters through the second grille 13 and the annular grille 808 and is blown out through the first grille 4. When the main motor 3 is in the second working state, the fan blade 2 rotates in the second direction, causing the airflow to flow from the front of the head assembly to the back. The airflow enters through the first grille 4 and is blown out through the annular grille 808.

[0131] In one embodiment, the main air duct 1 is connected to a oscillating motor 14.

[0132] In this embodiment, the oscillating motor 14 enables the head assembly to oscillate left and right or tilt, achieving a wider airflow range. When blowing cold air, the first grille 4 faces the user; when blowing hot air, the oscillating assembly aligns the second grille 13 with the user.

[0133] In one specific embodiment, the oscillating motor 14 can realize the pitch and oscillation of the head assembly.

[0134] According to an embodiment of the present invention, another aspect provides an air outlet device, including the head assembly provided in the above embodiments.

[0135] When cold air is needed, the drive component controls the air guide plate 5 to switch to the open position, so that the main motor 3 is in the first working state, the heating component 6 is not working, the oscillating motor 14 makes the first grille 4 face the user, and the fan blades 2 rotate in the first direction, driving the airflow from the back of the head assembly to the front. The airflow simultaneously enters the main air duct 1 through the central air duct 701 and the annular air duct 702, and then is blown out through the first grille 4, which can ensure that the cold air is strong enough and the air volume is large. When hot air is needed, the oscillating motor 14 oriented the second grille 13 toward the user, the drive component controlled the air guide plate 5 to switch to the closed position, the heating component 6 worked, the main motor 3 was in the second working state, the fan blade 2 rotated in the second direction, driving the airflow from the front to the back of the head assembly, the airflow passed through the first grille 4 and entered the main air duct 1, and then was blown out through the annular air duct 702. Since the heating component 6 is close to the air outlet side, it can avoid the loss of hot air when it is delivered, and reduce the loss of heat when heating. In addition, the heating component 6 is located in the annular air duct 702. The air gathering effect of the annular air duct 702 makes the airflow flow evenly through the heating component 6, which can achieve the best heating effect.

[0136] In one specific embodiment, the air outlet device includes a body with a fixing hole, and the output shaft of the oscillating motor 14 is inserted into the fixing hole, thereby enabling the head assembly to oscillate relative to the body.

[0137] In one embodiment, the air outlet device is a fan or a heater.

[0138] 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, The application relates to a hair dryer, which comprises the following components: a wind channel assembly, which comprises a main wind channel (1), a center wind channel (701) and an annular wind channel (702), the main wind channel (1) is internally provided with a fan blade (2) and a main motor (3) capable of driving the fan blade (2) to rotate, the main motor (3) has a first working state of rotating towards a first direction and a second working state of rotating towards a second direction, the center wind channel (701) and the annular wind channel (702) are arranged at one end of the main wind channel (1); a wind guide plate assembly, which comprises a plurality of wind guide plates (5), the plurality of wind guide plates (5) have a closed position of closing the center wind channel (701) and an open position of opening the center wind channel (701); a driving assembly, which is connected with the plurality of wind guide plates (5) and capable of driving the wind guide plates (5) to switch between the closed position and the open position; a heating assembly (6), which is arranged in the annular wind channel (702); when the main motor (3) is in the first working state, the driving assembly controls the wind guide plates (5) to switch to the open position, and airflow enters the main wind channel (1) through the center wind channel (701) and the annular wind channel (702) and is blown out; when the main motor (3) is in the second working state, the driving assembly controls the wind guide plates (5) to switch to the closed position, and airflow enters the annular wind channel (702) through the main wind channel (1) and is blown out.

2. The nose assembly of claim 1, wherein, The wind channel assembly comprises a cover plate (7), the cover plate (7) is arranged at one end of the main wind channel (1), and the cover plate (7) is provided with the center wind channel (701) and the annular wind channel (702).

3. The nose assembly of claim 2, wherein, The cover plate (7) comprises a first center connecting part (703), a first annular wall plate (704) and a second annular wall plate (705), the inner side of the first annular wall plate (704) constitutes the center wind channel (701), and the gap between the first annular wall plate (704) and the second annular wall plate (705) constitutes the annular wind channel (702).

4. The nose assembly of claim 3, wherein, The head assembly further comprises a shell (8), the main wind channel (1) and the cover plate (7) are arranged in the shell (8), the wind guide plate assembly is movably arranged in the shell (8) and located on the side of the shell (8) facing the center wind channel (701); and / or the wind guide plate assembly is movably arranged in the center wind channel (701) and located on the side of the center wind channel (701) away from the main wind channel (1).

5. The nose assembly of claim 4, wherein, The first center connecting part (703) is connected with the first annular wall plate (704) through a first connecting rib (707) and gradually inclines away from the main wind channel (1) in the radial direction of the main wind channel (1), the wind guide plate (5) is arranged between the cover plate (7) and the shell (8), and when the wind guide plate (5) switches to the closed position, the wind guide plate (5) gradually inclines away from the main wind channel (1) in the radial direction of the main wind channel (1).

6. The handpiece assembly of claim 4, wherein, The shell (8) comprises a second central connecting part (802) and a first annular connecting part (803), the air deflector (5) is rotatably arranged between the second central connecting part (802) and the first annular connecting part (803), the air deflector (5) comprises a plate body (501), when the air deflector (5) is in the closed position, the plate bodies (501) of each air deflector (5) form a same plane or an annular conical surface or adjacent plate bodies (501) at least partially overlap to block the communication between the main air duct (1) and the central air duct (701), when the air deflector (5) is in the open position, the adjacent plate bodies (501) form a clearance for air flow to pass to make the main air duct (1) and the central air duct (701) communicate.

7. The handpiece assembly of claim 6, wherein, The second central connecting part (802) and / or the first annular connecting part (803) is provided with a plurality of first clamping grooves (806) in the circumferential direction, the air deflector (5) comprises a rotating shaft (502) located at least one end of the plate body (501), and the rotating shaft (502) is arranged in the first clamping groove (806).

8. The handpiece assembly of claim 4, wherein, The air deflector (5) comprises a rocker (503) and a plate body (501), a plurality of plate bodies (501) have a closed position for closing the central air duct (701) and an open position for opening the central air duct (701), the driving assembly comprises a rotating member (9), the rotating member (9) is provided with a plurality of dial grooves (901) in the circumferential direction, the rocker (503) is arranged in the dial groove (901), and the rotating member (9) rotates to drive the rocker (503) to move, thereby driving the plate body (501) to rotate between the closed position and the open position.

9. The handpiece assembly of claim 8, wherein, The rotating member (9) has an engaging part (904), and the driving assembly further comprises: A driving motor (10) arranged on the cover plate (7) or the shell (8); A driving gear (11) connected with an output shaft of the driving motor (10) and engaged with the engaging part (904).

10. The handpiece assembly of claim 9, wherein, The driving assembly comprises a fixed plate (12), the shell (8) comprises a second central connecting part (802), the second central connecting part (802) is fixedly connected with the fixed plate (12), the driving motor (10) is fixed between the second central connecting part (802) and the fixed plate (12), or the cover plate (7) comprises a first central connecting part (703), the first central connecting part (703) is fixedly connected with the fixed plate (12), and the driving motor (10) is fixed between the first central connecting part (703) and the fixed plate (12).

11. The handpiece assembly of claim 9, wherein, The driving assembly comprises a fixed plate (12), the driving motor (10) is fixed between the shell (8) and the fixed plate (12), or the driving motor (10) is fixed between the central air duct (701) and the fixed plate (12), the rotating part (9) is matched with the fixed plate (12) through a limiting structure, and the limiting structure is used for limiting the rotating angle of the rotating part (9).

12. The handpiece assembly of claim 11, wherein, The limiting structure comprises a limiting groove (902) and a limiting rib (1202), the limiting groove (902) is arranged on one of the rotating part (9) and the fixed plate (12), the limiting rib (1202) is arranged on the other one of the rotating part (9) and the fixed plate (12), and the limiting rib (1202) is adapted to move along the limiting groove (902).

13. The handpiece assembly of claim 10, wherein, The fixed plate (12) is provided with one of a mounting through hole (903) and a mounting shaft (1203), the center of the rotating part (9) is provided with the other one of the mounting through hole (903) and the mounting shaft (1203), and the mounting shaft (1203) is arranged in the mounting through hole (903).

14. The handpiece assembly of claim 13, wherein, The fixed plate (12) is provided with a mounting shaft (1203), the center of the rotating part (9) is provided with a mounting through hole (903), the mounting shaft (1203) is arranged behind the mounting through hole (903), and the mounting shaft (1203) is fixedly connected with the cover plate (7).

15. The handpiece assembly of claim 14, wherein, The rotating part (9) is limited between the cover plate (7) and the fixed plate (12), the cover plate (7) is provided with a first limiting part (711), and the first limiting part (711) limits the axial movement of the rotating part (9).

16. The handpiece assembly of claim 11, wherein, The cover plate (7) is provided with a second limiting part (712), and the second limiting part (712) limits the axial movement of the driving gear (11).

17. The handpiece assembly of claim 10, wherein, One of the fixed plate (12) and the second central connecting part (802) is provided with a first limiting part, and the other one is provided with a second limiting part; or one of the fixed plate (12) and the first central connecting part (703) is provided with a first limiting part, and the other one is provided with a second limiting part, one of the first limiting part and the second limiting part is a limiting convex rib (1204), and the other one is a limiting rib strip (809), and the limiting convex rib (1204) and the limiting rib strip (809) are matched with each other to limit.

18. The nose assembly of any one of claims 2 to 17, wherein, One end of the main air duct (1) towards the cover plate (7) is provided with a flow guide surface (101), the outer edge of the flow guide surface (101) is provided with a plurality of first connecting parts (102), the cover plate (7) is correspondingly provided with a plurality of second connecting parts (710), and the first connecting parts (102) and the second connecting parts (710) are fixedly connected.

19. The handpiece assembly of any one of claims 4 to 17, wherein, The shell (8) comprises an annular grid (808), and the annular grid (808) corresponds to the annular air duct (702).

20. The handpiece assembly of any one of claims 4 to 17, wherein, The head assembly further comprises a first grille (4) arranged on one side of the main air duct (1) away from the central air duct (701), and / or a second grille (13) connected with the shell (8) and arranged correspondingly with the central air duct (701), or connected with the cover plate (7) and arranged correspondingly with the central air duct (701).

21. The handpiece assembly of any one of claims 1 to 17, wherein, The main air duct (1) is connected with a swing motor (14).

22. An air outlet device, comprising: The head assembly comprises: The head assembly according to any one of claims 1 to 21.

23. The air outlet apparatus of claim 22, wherein, The air outlet device is a fan or a heater.

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