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 comprising a main air duct, a central air duct and an annular air duct, the central air duct and the annular air duct are arranged at one end of the main air duct, the annular air duct is arranged on the peripheral side of the central air duct, and fan blades and a main motor capable of driving the fan blades to rotate are arranged in the main air duct; the heating assembly is arranged in the annular air duct; the air guide plate assembly comprises a plurality of air guide plates, the air guide plates are suitable for moving in a plane perpendicular to the axial direction of the main air duct so that the air guide plates can have a first position and a second position, when the first position is, the main air duct communicates with the central air duct, and the air guide plates block communication between the main air duct and the annular air duct, and when the second position is, the main air duct communicates with the annular air duct; the air guide plate blocks communication between the main air channel and the central air channel, and the air guide plate is suitable for being switched between a first position and a second position under driving of airflow generated when the fan blades rotate or driving of the driving assembly.

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 outlet devices, such as hot and cold air circulating fans, have the function of emitting both cold and hot air. If the dual air ducts are not used for a long time and no protection is provided, dust will accumulate in the warm air duct. Since the warm air duct contains a heating element, if a large amount of dust accumulates in the heating element over a long period of time, it will pose a certain safety hazard. 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 dust easily accumulating on the heating element.

[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. The main air duct is equipped with fan blades and a main motor that can drive the fan blades to rotate. The heating element is located in the annular air duct; An air guide plate assembly includes multiple air guide plates, which are movable to have a first position and a second position. In the first position, the main air duct is connected to the central air duct, and the air guide plate blocks the connection between the main air duct and the annular air duct. In the second position, the main air duct is connected to the annular air duct, and the air guide plate blocks the connection between the main air duct and the central air duct. The air guide plate is adapted to switch between the first position and the second position under the drive of the airflow generated when the fan blades rotate or under the drive of a drive assembly.

[0005] Beneficial effects: When cold air is needed, the heating element is not working, but the main motor drives the fan blades to rotate, creating airflow. Driven by the airflow or the drive component, the air guide plate switches to the first position, connecting the main air duct and the central air duct. The air guide plate blocks the connection between the main air duct and the annular air duct, allowing airflow through the central air duct without entering the annular air duct. This prevents dust from entering the annular air duct and causing dust accumulation on the heating element, and the heating element does not create wind resistance for the cold air, ensuring sufficient airflow. When warm air is needed, the heating element is working, and the main motor drives the fan blades to rotate, creating airflow. Driven by the airflow or the drive component, the air guide plate switches to the second position, connecting the main air duct and the annular air duct. The air guide plate blocks the connection between the main air duct and the central air duct, allowing the airflow to pass through the annular air duct and be heated by the heating element. Therefore, the blown air is warm. Furthermore, the heating element is located in the annular air duct, and the annular air duct's air-gathering effect ensures that the airflow passes evenly over the heating element, achieving optimal heating effect.

[0006] In one optional embodiment, the main motor has a first operating state of rotating in a first direction and a second operating state of rotating in a second direction; When the main motor is in the first working state, the air guide plate is switched to the first position, and the airflow enters the main air duct after passing through the central air duct and is then blown out. When the main motor is in the second working state, the air guide plate is switched to the second position, and the airflow enters the annular air duct through the main air duct and is then blown out.

[0007] Beneficial effects: When cold air is needed, the heating element is not working, and the main motor is in the first working state. The main motor drives the fan blades to rotate, which in turn drives the airflow. Driven by the airflow or the drive component, the air guide plate switches to the first position, connecting the main air duct and the central air duct. The air guide plate blocks the connection between the main air duct and the annular air duct. The airflow enters the main air duct through the central air duct and is blown out, without entering the annular air duct. This prevents dust in the air from entering the annular air duct and causing dust accumulation on the heating element. Furthermore, the heating element does not create wind resistance for the cold air, ensuring the airflow volume of the cold air. When warm air is needed, the heating element works, and the main motor is in its second working state. The main motor drives the fan blades to rotate, causing airflow. Driven by the airflow or the drive component, the air guide plate switches to the second position, connecting the main air duct and the annular air duct. The air guide plate blocks the connection between the main air duct and the central air duct. The airflow enters the annular air duct through the main air duct and is then blown out. The airflow is heated by the heating element as it passes through the annular air duct, so the blown-out air is warm air. Since the heating element is close to the air outlet side, it can avoid losses when the warm air is delivered, reducing heat loss during heating.

[0008] In one optional embodiment, the annular air duct is provided with a rotating connection part, one end of the air guide plate is connected to the rotating connection part, and the air guide plate is adapted to rotate around the rotation axis to switch between the first position and the second position.

[0009] Beneficial effects: One end of the air guide plate is connected to the rotating connection part. The air guide plate is suitable for rotating around the rotation axis to switch between the first position and the second position, which facilitates the control of the air guide plate switching between the first position and the second position.

[0010] In one optional embodiment, the air guide plate includes a plate body and a connecting portion disposed at one end of the plate body. The connecting portion is rotatably connected to the rotating connecting portion. When the air guide plate is in the second position, at least a portion of the plate body is located in the central air duct, and the connecting portion is located in the annular air duct. When the air guide plate is in the first position, the connecting portion and at least a portion of the plate body are located in the annular air duct.

[0011] Beneficial effect: When the air guide plate is in the first position, the connecting part and at least part of the plate are located in the annular air duct, which can ensure that the airflow flows smoothly through the central air duct.

[0012] In one alternative embodiment, the maximum width of the connecting portion is less than the minimum width of the plate.

[0013] Beneficial effects: The maximum width of the connecting part is less than the minimum width of the plate. When the air guide plate is in the second position, the plate is located in the central air duct and the connecting part is located in the annular air duct. The resistance of the connecting part to the airflow passing through the annular air duct is small.

[0014] In one alternative embodiment, two adjacent air guide plates are staggered along the axial direction of the main air duct, such that one of the two adjacent air guide plates is distributed on a first plane and the other air guide plate is distributed on a second plane, with the first plane being parallel to the second plane.

[0015] Beneficial effect: The two adjacent air guide plates are staggered along the axis of the main air duct so that one of the two adjacent air guide plates is distributed on the first plane and the other is distributed on the second plane, which can avoid interference between adjacent air guide plates when they are in motion.

[0016] In one optional embodiment, the drive assembly includes a rotating member, the air guide plate is provided with one of a sliding groove and a rotating shaft, the rotating member is provided with the other of a sliding groove and a rotating shaft, the rotating shaft is slidably and rotatably disposed in the sliding groove, when the rotating member rotates, the rotating shaft slides along the sliding groove, and the air guide plate rotates about the rotation axis.

[0017] Beneficial effects: The air guide plate is provided with one of the slide groove and the rotating shaft, and the rotating part is provided with the other of the slide groove and the rotating shaft. The rotating shaft is slidably and rotatably disposed in the slide groove. When the rotating part rotates, the rotating shaft slides along the slide groove, and the air guide plate rotates around the rotation axis. Therefore, one air guide plate can drive multiple air guide plates to rotate together at the same time. The structure is simpler, easier to control, and lower in cost.

[0018] In one optional embodiment, the rotating component includes a central rotating part and a plurality of connecting rods disposed on the outer periphery of the central rotating part and extending in a radial direction, wherein the connecting rods are provided with the sliding groove or the rotating shaft.

[0019] Beneficial effects: The rotating component includes a central rotating part and multiple connecting rods located on the outer periphery of the central rotating part and extending radially. It is only necessary to drive the central rotating part to rotate to drive the entire rotating component to rotate, thereby driving multiple air guide plates to rotate together. By setting the connecting rods, the gaps between the connecting rods can allow airflow to pass through, with less obstruction to airflow. Slots or rotating shafts are set in the connecting rods. When the rotating component rotates, the rotating shaft slides along the slot and drives the air guide plates to rotate around the rotation axis.

[0020] In one optional embodiment, the connecting rod is provided with the pivot, and one of the pivots on adjacent connecting rods is located on the side of the connecting rod facing the main air duct, and the other is located on the side of the connecting rod away from the main air duct.

[0021] Beneficial effect: One of the pivots on the adjacent connecting rod is located on the side of the connecting rod facing the main air duct, and the other is located on the side of the connecting rod away from the main air duct. This makes it easy to set the two adjacent air guides on different levels, so that one of the two adjacent air guides is distributed on the first plane and the other air guide is distributed on the second plane, with the first plane and the second plane being parallel.

[0022] In one alternative embodiment, the head assembly includes a housing, the housing including a cylindrical shell and a first annular connecting portion, the cylindrical shell surrounding the outside of the main air duct, the gap between the cylindrical shell 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.

[0023] Beneficial effects: By designing an outer casing, which includes a cylindrical shell and a first annular connecting part, the cylindrical shell surrounds the outside of the main air duct, resulting in good appearance consistency for the entire head assembly. The gap between the cylindrical shell and the first annular connecting part forms an annular air duct, and the inner side of the first annular connecting part forms a central air duct. The structure is simple, reduces the number of parts, and facilitates the assembly of the entire head assembly.

[0024] In one alternative embodiment, the housing includes a first central connecting portion, the rotating member has an engaging portion, and the drive assembly includes: A drive motor is fixed relative to the first central connection part or the air duct assembly; The drive gear is connected to the output shaft of the drive motor, and the drive gear meshes with the meshing part.

[0025] 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 each air guide plate to rotate around the rotation axis, realizing switching between the first position and the second position, and the transmission is reliable.

[0026] In one optional embodiment, the drive assembly further includes a fixing plate, the drive motor is fixed between the first central connecting portion and the fixing plate, and the rotating member is rotatably engaged with the fixing plate.

[0027] Beneficial effects: By setting a fixing plate, the position of the drive motor can be effectively fixed, and the rotating parts can rotate in cooperation with the fixing plate. The fixing plate can position the rotating parts and ensure that the rotating parts rotate normally.

[0028] In one optional embodiment, the rotating member and the fixed plate are engaged by a limiting structure, which is used to limit the rotation angle of the rotating member.

[0029] 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 first position and the second position.

[0030] In one optional embodiment, the head assembly further includes a cover plate, the cover plate includes a second central connecting portion, the fixed plate is provided with a mounting shaft, the center of the rotating component is provided with a mounting through hole, and after the mounting shaft passes through the mounting through hole, the mounting shaft is fixedly connected to the second central connecting portion.

[0031] Beneficial effects: The fixed plate is equipped with a mounting shaft, and the center of the rotating part is equipped with a mounting through hole. After the mounting shaft passes through the mounting through hole, it is fixedly connected to the second center connection part. The mounting shaft and the mounting through hole can be used to position the rotating part, ensuring that the rotating part rotates around the axis of the mounting shaft. The cover plate, rotating part, fixed plate and shell can be assembled together, which can improve assembly stability.

[0032] In one optional embodiment, the cover plate is provided with a first limiting part, which limits the axial movement of the rotating member.

[0033] Beneficial effects: By setting a first limiting part on the cover plate, the first limiting part limits the axial movement of the rotating part, which can prevent the rotating part from moving axially and causing the rotating shaft to disengage from the slide groove, thus preventing the smooth switching of the air guide plate between the first and second positions, thereby improving the assembly stability.

[0034] In one alternative embodiment, the cover plate is provided with a second limiting portion, which limits the axial movement of the drive gear.

[0035] Beneficial effect: By setting a second limiting part on the cover plate, the drive gear can be prevented from moving axially, thus improving assembly stability.

[0036] In one optional embodiment, the cover plate includes an annular connector that fits against the inner wall of the cylindrical shell, and the rotating connection portion is provided on the inner side of the annular connector.

[0037] Beneficial effects: The cover plate includes an annular connector, and the inner side of the annular connector is provided with a rotating connection part, which avoids the increased difficulty of demolding caused by placing the rotating connection part on the outer shell.

[0038] In one optional embodiment, the rotating connection includes a support portion and a connecting shaft. The support portion is disposed on the annular connector. Of two adjacent rotating connections, one connecting shaft is disposed on the side of the support portion facing the main air duct, and the other is disposed on the side of the support portion away from the main air duct.

[0039] Beneficial effects: Two adjacent rotating connecting parts, one connecting shaft is located on the side of the support part facing the main air duct, and the other is located on the side of the support part away from the main air duct, which makes it easy to set the two adjacent air guide plates on different levels, so that one of the two adjacent air guide plates is distributed on the first plane and the other air guide plate is distributed on the second plane, with the first plane and the second plane being parallel.

[0040] In one alternative embodiment, the annular connector has a plurality of mating ribs on its outer side, and the annular connector is interference-fitted with the cylindrical shell through the mating ribs.

[0041] Beneficial effects: By setting multiple mating ribs on the outside of the annular connector, the assembly process is simplified by simply embedding the annular connector inside the housing.

[0042] In one alternative embodiment, the housing includes an annular grille disposed opposite to the annular air duct.

[0043] Beneficial effects: By setting up a ring-shaped grille, the heating components located inside the ring-shaped air duct can be concealed, making the appearance more aesthetically pleasing. It can also prevent users from accidentally putting their hands into the ring-shaped air duct, which could lead to burns or electric shocks and other electrical safety hazards.

[0044] In one alternative embodiment, the housing includes a first grille disposed opposite to the central air duct.

[0045] Beneficial effects: The first grille can conceal the parts inside the central air duct, making the appearance more aesthetically pleasing and ensuring safe use.

[0046] In one alternative embodiment, the head assembly includes a second grille disposed on the side of the main air duct away from the central air duct.

[0047] Beneficial effects: By adding a second grille, the appearance is more aesthetically pleasing, while ensuring safety during use.

[0048] Secondly, the present invention also provides an air outlet device, comprising: The aforementioned head assembly.

[0049] Beneficial effects: When cold air is needed, the heating element is not working. The main motor drives the fan blades to rotate, causing airflow. Driven by the airflow or the drive component, the air guide plate switches to the first position, connecting the main air duct and the central air duct. The air guide plate blocks the connection between the main air duct and the annular air duct, allowing airflow to pass through the central air duct without entering the annular air duct. This prevents dust from entering the annular air duct and causing dust accumulation on the heating element. Furthermore, the heating element does not create wind resistance for the cold air, ensuring sufficient airflow. When warm air is needed, the heating element is working, and the main motor drives the fan blades to rotate, causing airflow. Driven by the airflow or the drive component, the air guide plate switches to the second position, connecting the main air duct and the annular air duct. The air guide plate blocks the connection between the main air duct and the central air duct. The airflow passes through the annular air duct and is heated by the heating element, resulting in warm air. The heating element's location within the annular air duct, with its concentrated airflow effect, ensures even airflow over the heating element, achieving optimal heating performance.

[0050] In one alternative implementation, the air outlet device is a fan or a heater. Attached Figure Description

[0051] 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.

[0052] Figure 1 This is a cross-sectional view of a head assembly according to an embodiment of the present invention; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 A schematic diagram showing the assembly of the outer casing, cover plate, rotating parts, and air guide plate together, with the air guide plate in the first position. Figure 4 A schematic diagram showing the assembly of the outer casing, cover plate, rotating parts, and air guide plate together, with the air guide plate in the second position. Figure 5 This is a schematic diagram of the air guide plate; Figure 6 This is a schematic diagram of a rotating component; Figure 7 This is a schematic diagram of the outer casing; Figure 8 This is a schematic diagram of the cover plate; Figure 9 This is a schematic diagram of the fixing plate; Figure 10 This is the front view of the nose assembly; Figure 11 This is a rear view of the nose assembly.

[0053] Explanation of reference numerals in the attached figures: 1. Main air duct; 2. Central air duct; 3. Annular air duct; 4. Main motor; 5. Fan blade; 6. Heating element; 7. Air guide plate; 701. Plate body; 702. Connecting part; 703. Hinge hole; 704. First arc-shaped section; 705. Second arc-shaped section; 706. Third arc-shaped section; 707. First connecting section; 708. Second connecting section; 709. Slide groove; 8. Rotating component; 801. Central rotating part; 802. Connecting rod; 803. Rotating shaft; 804. Meshing part; 805. Mounting through hole; 806. Limiting groove; 807. Annular stepped surface; 9. Outer shell; 901. Cylindrical shell; 902. First ring 903. First central connecting part; 904. Annular grille; 905. First grille; 906. First screw post; 10. Drive motor; 11. Drive gear; 12. Fixing plate; 1201. Mounting shaft; 1202. First screw through hole; 1203. Limiting rib; 13. Cover plate; 1301. Second central connecting part; 1302. First limiting part; 1303. Second limiting part; 1304. Second screw through hole; 1305. Annular connector; 1306. Matching rib; 1307. Second connecting rib; 1308. Support part; 1309. Connecting shaft; 14. Second grille. Detailed Implementation

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] Related air outlet devices, such as hot and cold air circulating fans, have the function of emitting both cold and hot air. If the dual air ducts are not used for a long time and no protection is provided, dust will accumulate in the warm air duct. Since the warm air duct contains a heating element, if a large amount of dust accumulates in the heating element over a long period of time, it will pose a certain safety hazard.

[0059] The following is combined with Figures 1 to 11 The following describes embodiments of the present invention.

[0060] According to an embodiment of the present invention, in one aspect, a head assembly is provided, including an air duct assembly, a heating assembly 6, and an air guide plate assembly.

[0061] 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 main air duct 1 is equipped with a fan blade 5 and a main motor 4 that can drive the fan blade 5 to rotate. The heating element 6 is located in the annular air duct 3. The air guide plate assembly includes multiple air guide plates 7. The air guide plates 7 are movable to have a first position and a second position. In the first position, the main air duct 1 is connected to the central air duct 2, and the air guide plate 7 blocks the connection between the main air duct 1 and the annular air duct 3. In the second position, the main air duct 1 is connected to the annular air duct 3, and the air guide plate 7 blocks the connection between the main air duct 1 and the central air duct 2. The air guide plate 7 is adapted to switch between the first position and the second position under the drive of the airflow generated when the fan blade 5 rotates or under the drive of the driving component.

[0062] In this embodiment, when cold air is needed, the heating element 6 does not work, the main motor 4 works to drive the fan blade 5 to rotate, and drive the airflow. Driven by the airflow or the drive component, the air guide plate 7 switches to the first position, the main air duct 1 is connected to the central air duct 2, and the air guide plate 7 blocks the connection between the main air duct 1 and the annular air duct 3. The airflow can pass through the central air duct 2 and will not enter the annular air duct 3. This can prevent dust in the air from entering the annular air duct 3 and causing dust to accumulate in the heating element 6. In addition, the heating element 6 will not cause wind resistance to the cold air, which can ensure the airflow of the cold air. When warm air is needed, the heating element 6 works, and the main motor 4 drives the fan blade 5 to rotate, causing airflow. Driven by the airflow or the drive component, the air guide plate 7 switches to the second position, connecting the main air duct 1 with the annular air duct 3. The air guide plate 7 blocks the connection between the main air duct 1 and the central air duct 2. The airflow passes through the annular air duct 3 and is heated by the heating element 6, so the blown air is warm air. The heating element 6 is located in the annular air duct 3, and the air-gathering effect of the annular air duct 3 makes the airflow flow evenly through the heating element 6, achieving the best heating effect.

[0063] It should be noted that when the air guide plate 7 is very light, the main motor 4 drives the fan blade 5 to rotate. The airflow generated by the rotation of the fan blade 5 can drive the air guide plate 7 from the second position to the first position. In this embodiment, the drive assembly is preferred to drive the air guide plate 7 to switch between the first position and the second position.

[0064] In one specific embodiment, the air guide plate 7 is adapted to move in a plane perpendicular to the axial direction of the main air duct 1 or in a plane forming an acute or obtuse angle with the axial direction of the main air duct 1. Since the air guide plate 7 is adapted to move in a plane perpendicular to the axial direction of the main air duct 1 or in a plane forming an acute or obtuse angle with the axial direction of the main air duct 1, the air guide plate 7 does not need to occupy a large space in the axial direction of the main air duct 1, thus reducing the axial length of the head assembly.

[0065] It should be noted that "multiple" means at least two, and "multiple air guides 7" specifically refers to at least two air guides 7. More specifically, this embodiment provides a total of 12 air guides 7.

[0066] Specifically, the heating element 6 includes a heating wire extending circumferentially.

[0067] In one embodiment, the main motor 4 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 4 is in the first working state, the air guide plate 7 is switched to the first position, and the airflow enters the main air duct 1 after passing through the central air duct 2 and is then blown out. When the main motor 4 is in the second working state, the air guide plate 7 is switched to the second position, and the airflow enters the annular air duct 3 after passing through the main air duct 1 and is then blown out.

[0068] In this embodiment, when cold air is needed, the heating element 6 is not working, and the main motor 4 is in its first working state. The main motor 4 drives the fan blades 5 to rotate, causing airflow. Driven by the airflow or by the drive component, such as... Figure 3 As shown, when the air guide plate 7 is switched to the first position, the main air duct 1 and the central air duct 2 are connected. The air guide plate 7 blocks the connection between the main air duct 1 and the annular air duct 3. The airflow enters the main air duct 1 through the central air duct 2 and is then blown out, without entering the annular air duct 3. This prevents dust in the air from entering the annular air duct 3 and causing dust accumulation in the heating element 6. Furthermore, the heating element 6 does not create wind resistance for the cold air, ensuring the airflow volume of the cold air. When warm air is needed, the heating element 6 is activated, and the main motor 4 is in the second working state. The main motor 4 drives the fan blades 5 to rotate, causing airflow. Driven by the airflow or by the drive component, such as... Figure 4 As shown, the air guide plate 7 is switched to the second position, the main air duct 1 is connected to the annular air duct 3, and the air guide plate 7 blocks the connection between the main air duct 1 and the central air duct 2. The airflow enters the annular air duct 3 through the main air duct 1 and is blown out. When the airflow passes through the annular air duct 3, it is heated by the heating element 6. Therefore, the blown-out air is warm air. Since the heating element 6 is close to the air outlet side, it can avoid the loss of warm air when it is delivered and reduce the loss of heat when heating.

[0069] 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.

[0070] In one embodiment, the annular air duct 3 is provided with a rotating connection part, one end of the air guide plate 7 is connected to the rotating connection part, and the air guide plate 7 is adapted to rotate around the rotation axis of the rotating connection part to switch between a first position and a second position.

[0071] In this embodiment, one end of the air guide plate 7 is connected to the rotating connection part, and the rotation axis of the rotating connection part is parallel to the axis of the main air duct 1. The air guide plate 7 is adapted to rotate around the rotation axis to switch between a first position and a second position. The air guide plate 7 rotates in a plane perpendicular to the axis of the main air duct 1, which facilitates the control of the air guide plate 7 switching between the first position and the second position.

[0072] In other alternative embodiments, the air guide plate 7 can be switched between a first position and a second position by means of movement, for example, the air guide plate 7 can be moved radially along the central air duct 2.

[0073] In a preferred embodiment, the rotation axis of the rotating connection is parallel to the axis of the main air duct 1, so that the air guide plate 7 rotates in a plane perpendicular to the axis of the main air duct 1.

[0074] In one embodiment, the air guide plate 7 includes a plate body 701 and a connecting portion 702 disposed at one end of the plate body 701. The connecting portion 702 is rotatably connected to the rotating connecting portion. When the air guide plate 7 is in the second position, at least a portion of the plate body 701 is located in the central air duct 2, and the connecting portion 702 is located in the annular air duct 3. When the air guide plate 7 is in the first position, the connecting portion 702 and at least a portion of the plate body 701 are located in the annular air duct 3.

[0075] In this embodiment, when the air guide plate 7 is in the first position, the connecting part 702 and at least part of the plate body 701 are located in the annular air duct 3, which can ensure that the airflow flows smoothly through the central air duct 2.

[0076] In one embodiment, the maximum width of the connecting portion 702 is less than the minimum width of the plate 701.

[0077] In this embodiment, the maximum width of the connecting part 702 is less than the minimum width of the plate 701. When the air guide plate 7 is in the second position, the plate 701 is located in the central air duct 2, and the connecting part 702 is located in the annular air duct 3. The connecting part 702 has less resistance to the airflow passing through the annular air duct 3.

[0078] In one embodiment not shown in the figure, the connecting portion 702 may be irregular in shape, and the maximum width of the connecting portion 702 may be greater than, less than or equal to, the width of the plate 701.

[0079] Specifically in one embodiment, such as Figure 5 As shown, the outer side of the plate 701 is provided with a first arc-shaped segment 704, and the inner side of the plate 701 is provided with a second arc-shaped segment 705. The first arc-shaped segment 704 and the second arc-shaped segment 705 are arranged with the same center, which can match the shape of the annular air duct 3.

[0080] Specifically, the first arc segment 704 and the connecting part 702 are connected by the third arc segment 706. The third arc segment 706 and the connecting part 702 form a "7" shape, facing towards the direction close to the connecting part 702. The distance between the third arc segment 706 and the second arc segment 705 gradually decreases.

[0081] Specifically, the first arc segment 704 is provided with a first connecting segment 707 on the side away from the third arc segment 706, and the second arc segment 705 is provided with a second connecting segment 708 on the side away from the connecting part 702. The distance between the first connecting segment 707 and the second connecting segment 708 gradually decreases in the direction away from the connecting part 702, which can adapt to the need for the space to become smaller near the center of the central air duct 2. When the air guide plate 7 is in the first position, part of the area between the first connecting segment 707 and the second connecting segment 708 is located in the central air duct 2.

[0082] In one embodiment, two adjacent air guide plates 7 are staggered along the axial direction of the main air duct 1, so that one of the two adjacent air guide plates 7 is distributed on a first plane and the other air guide plate 7 is distributed on a second plane, with the first plane and the second plane being parallel.

[0083] In this embodiment, two adjacent air guide plates 7 are staggered along the axial direction of the main air duct 1, so that one of the two adjacent air guide plates 7 is distributed on the first plane and the other air guide plate 7 is distributed on the second plane, which can avoid interference between adjacent air guide plates 7 when they are in motion.

[0084] In one embodiment, the first plane and the second plane are perpendicular to the axis of the main air duct 1, respectively.

[0085] In another embodiment, the first plane and the second plane are at acute angles to the axial direction of the main air duct 1, or the first plane and the second plane are at obtuse angles to the axial direction of the main air duct 1.

[0086] In one embodiment, the drive assembly includes a rotating member 8, and the air guide plate 7 is provided with one of a sliding groove 709 and a rotating shaft 803. The rotating member 8 is provided with the other of a sliding groove 709 and a rotating shaft 803. The rotating shaft 803 is slidably and rotatably disposed in the sliding groove 709. When the rotating member 8 rotates, the rotating shaft 803 slides along the sliding groove 709, and the air guide plate 7 rotates about the rotation axis.

[0087] In this embodiment, the air guide plate 7 is provided with one of a sliding groove 709 and a rotating shaft 803, and the rotating member 8 is provided with the other of a sliding groove 709 and a rotating shaft 803. The rotating shaft 803 is slidably and rotatably disposed in the sliding groove 709. When the rotating member 8 rotates, the rotating shaft 803 slides along the sliding groove 709, and the air guide plate 7 rotates around the rotation axis. Therefore, one air guide plate 7 can drive multiple air guide plates 7 to rotate together at the same time, which makes the structure simpler, easier to control, and lower in cost.

[0088] In one embodiment, the rotating member 8 includes a central rotating part 801 and multiple connecting rods 802 disposed on the outer periphery of the central rotating part 801 and extending in the radial direction. The connecting rods 802 are provided with a sliding groove 709 or a rotating shaft 803.

[0089] In this embodiment, the rotating component 8 includes a central rotating part 801 and multiple connecting rods 802 located on the outer periphery of the central rotating part 801 and extending radially. The entire rotating component 8 can be rotated simply by driving the central rotating part 801 to rotate, thereby causing multiple air guide plates 7 to rotate together. By setting the connecting rods 802, the gaps between the connecting rods 802 can allow airflow to pass through, resulting in less obstruction to airflow. A sliding groove 709 or a rotating shaft 803 is provided on the connecting rods 802. When the rotating component 8 rotates, the rotating shaft 803 slides along the sliding groove 709 and causes the air guide plates 7 to rotate around the rotation axis.

[0090] In one specific embodiment, since the area of ​​the air guide plate 7 is relatively large, the slide groove 709 is provided on the air guide plate 7, and the rotating shaft 803 is provided on the connecting rod 802.

[0091] More specifically, the slide groove 709 is provided on both the connecting part 702 and the plate 701.

[0092] Specifically, the first limiting structure limits the axial movement of the rotating shaft 803 to prevent the rotating shaft 803 from disengaging from the slide groove 709. The first limiting structure can be a screw or a nut.

[0093] In one embodiment, the connecting rod 802 is provided with a rotating shaft 803. One of the rotating shafts 803 on adjacent connecting rods 802 is located on the side of the connecting rod 802 facing the main air duct 1, and the other is located on the side of the connecting rod 802 away from the main air duct 1.

[0094] In this embodiment, one of the pivots 803 on the adjacent connecting rod 802 is located on the side of the connecting rod 802 facing the main air duct 1, and the other is located on the side of the connecting rod 802 away from the main air duct 1, so that the two adjacent air guide plates 7 can be set on different levels.

[0095] In one embodiment, the head assembly includes a housing 9, which includes a cylindrical housing 901 and a first annular connecting portion 902. The cylindrical housing 901 surrounds the outside of the main air duct 1, and the gap between the cylindrical housing 901 and the first annular connecting portion 902 forms an annular air duct 3. The inside of the first annular connecting portion 902 forms a central air duct 2.

[0096] In this embodiment, by providing an outer casing 9, which includes a cylindrical shell 901 and a first annular connecting portion 902, the cylindrical shell 901 surrounds the outer side of the main air duct 1, resulting in good appearance consistency for the entire head assembly. The gap between the cylindrical shell 901 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. The structure is simple, reduces the number of parts, and facilitates the assembly of the entire head assembly.

[0097] Specifically, the outer shell 9 is a one-piece molded structure.

[0098] In one embodiment, the housing 9 includes a first central connection portion 903, the rotating member 8 has a meshing portion 804, and the drive assembly includes a drive motor 10 and a drive gear 11. The drive motor 10 is fixed relative to the first central connection portion 903 or the air duct assembly; the drive gear 11 is connected to the output shaft of the drive motor 10, and the drive gear 11 meshes with the meshing portion 804.

[0099] 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 804 of the rotating member 8, thereby driving the rotating member 8 to rotate, which in turn drives each air guide plate 7 to rotate around the rotating axis 803, realizing switching between the first position and the second position, and the transmission is reliable.

[0100] In one specific embodiment, the meshing part 804 has internal meshing teeth, and the driving gear 11 has external meshing teeth. The driving gear 11 is located inside the rotating member 8, which makes the structure of the drive assembly more compact.

[0101] In one embodiment, the drive motor 10 is disposed at the first central connection portion 903.

[0102] In one embodiment, the drive assembly further includes a fixed plate 12, the drive motor 10 is fixed between the first central connecting part 903 and the fixed plate 12, and the rotating part 8 is rotatably engaged with the fixed plate 12.

[0103] In this embodiment, by setting the fixing plate 12, the position of the drive motor 10 can be effectively fixed, and the rotating part 8 is rotatably engaged with the fixing plate 12. The fixing plate 12 can position the rotating part 8 to ensure that the rotating part 8 rotates normally.

[0104] In one specific embodiment, the fixing plate 12 is connected to the first central connecting part 903 by screws and / or snap fasteners.

[0105] Specifically, the fixing plate 12 is provided with a first screw through hole 1202, and the first central connecting part 903 is provided with a first screw post 906. The screw passes through the first screw through hole 1202 and is tightened in the first screw post 906 to fix the fixing plate 12 on the first central connecting part 903.

[0106] In one specific embodiment, the fixing plate 12 is provided with one of a mounting through hole 805 and a mounting shaft 1201, and the center of the rotating member 8 is provided with the other of the mounting through hole 805 and mounting shaft 1201, with the mounting shaft 1201 located in the mounting through hole 805. The mounting shaft 1201 and the mounting through hole 805 cooperate to position the rotating member 8, ensuring that the rotating member 8 rotates around the axis of the mounting shaft 1201.

[0107] In one embodiment, the rotating member 8 and the fixed plate 12 are engaged by a limiting structure, which is used to limit the rotation angle of the rotating member 8.

[0108] In this embodiment, by setting a limiting structure to restrict the rotation angle of the rotating component 8, it can be ensured that the air guide plate 7 can only switch between the first position and the second position.

[0109] In one embodiment, the limiting structure includes a limiting groove 806 and a limiting rib 1203. The limiting groove 806 is provided in one of the rotating member 8 and the fixed plate 12, and the limiting rib 1203 is provided in the other of the rotating member 8 and the fixed plate 12. The limiting rib 1203 is adapted to move along the limiting groove 806.

[0110] In this embodiment, the limiting rib 1203 and the limiting groove 806 cooperate to limit the rotation angle of the rotating member 8, which can ensure that the air guide plate 7 can only switch between the first position and the second position.

[0111] In one specific embodiment, when the limiting rib 1203 is located at one end of the limiting groove 806, the air guide plate 7 is in the first position, and when the limiting rib 1203 is located at the other end of the limiting groove 806, the air guide plate 7 is in the second position.

[0112] Specifically, in combination Figure 6 and Figure 9 The limiting rib 1203 is provided on the fixed plate 12, and the limiting groove 806 is provided on the rotating part 8.

[0113] Specifically, such as Figure 6 As shown, the limiting groove 806 is an arc-shaped groove.

[0114] In one embodiment, the head assembly further includes a cover plate 13, which includes a second central connecting portion 1301. The fixing plate 12 is provided with a mounting shaft 1201, and the center of the rotating member 8 is provided with a mounting through hole 805. After the mounting shaft 1201 passes through the mounting through hole 805, the mounting shaft 1201 is fixedly connected to the second central connecting portion 1301.

[0115] In this embodiment, the fixed plate 12 is provided with a mounting shaft 1201, and the center of the rotating part 8 is provided with a mounting through hole 805. After the mounting shaft 1201 passes through the mounting through hole 805, it is fixedly connected to the second central connecting part 1301. The mounting shaft 1201 and the mounting through hole 805 cooperate to position the rotating part 8, ensuring that the rotating part 8 rotates around the axis of the mounting shaft 1201. The cover plate 13, the rotating part 8, the fixed plate 12, and the outer shell 9 can be assembled together, which can improve the assembly stability.

[0116] Specifically, the center of the second central connecting part 1301 is provided with a second screw through hole 1304, and the mounting shaft 1201 is provided with a threaded hole. The screw passes through the second screw through hole 1304 and is tightened in the threaded hole.

[0117] In one embodiment, the cover plate 13 is provided with a first limiting part 1302, which limits the axial movement of the rotating member 8.

[0118] In this embodiment, by providing a first limiting part 1302 on the cover plate 13, the first limiting part 1302 limits the axial movement of the rotating part 8, which can prevent the rotating part 8 from moving axially and causing the rotating shaft 803 to disengage from the slide groove 709, thus preventing the smooth switching of the air guide plate 7 between the first and second positions, thereby improving assembly stability.

[0119] In one embodiment, the rotating member 8 has an annular stepped surface 807, and the first limiting part 1302 is annular, abutting against the annular stepped surface 807. In another embodiment, the rotating member 8 has an annular stepped surface 807, and the first limiting part 1302 is annular, with a certain gap between the first limiting part 1302 and the annular stepped surface 807, to prevent the rotating member 8 from moving axially and causing the rotating shaft 803 to disengage from the sliding groove 709, thus hindering the smooth switching of the air guide plate 7 between the first and second positions and improving assembly stability.

[0120] In one embodiment, the cover plate 13 is provided with a second limiting part 1303, which limits the axial movement of the drive gear 11.

[0121] In this embodiment, by providing a second limiting part 1303 on the cover plate 13, the drive gear 11 can be prevented from moving axially, thereby improving assembly stability.

[0122] In one embodiment, the cover plate 13 includes an annular connector 1305, which fits against the inner wall of the cylindrical housing 901, and the inner side of the annular connector 1305 is provided with a rotating connection portion.

[0123] In this embodiment, the cover plate 13 includes an annular connector 1305, and the inner side of the annular connector 1305 is provided with a rotating connection part, which avoids the increased difficulty of demolding caused by setting the rotating connection part in the outer shell 9.

[0124] Specifically in one embodiment, such as Figure 8 As shown, the annular connector 1305 has multiple mating ribs 1306 on its outer side, and the annular connector 1305 is interference-fitted with the cylindrical shell 901 through the mating ribs 1306.

[0125] In this embodiment, by providing multiple mating ribs 1306 on the outer side of the annular connector 1305, the assembly process is simplified by simply embedding the annular connector 1305 inside the housing 9.

[0126] In one specific embodiment, the annular connector 1305 and the second central connector 1301 are connected by multiple radially distributed second connecting ribs 1307. In one embodiment, such as Figure 8As shown, the rotating connection includes a support part 1308 and a connecting shaft 1309. The support part 1308 is located on the annular connector 1305. Of the two adjacent rotating connections, one connecting shaft 1309 is located on the side of the support part 1308 facing the main air duct 1, and the other is located on the side of the support part 1308 away from the main air duct 1.

[0127] In this embodiment, two adjacent rotating connecting parts are provided, one connecting shaft 1309 is provided on the side of the support part 1308 facing the main air duct 1, and the other is provided on the side of the support part 1308 away from the main air duct 1, so that the two adjacent air guide plates 7 are set on different layers, so that one of the two adjacent air guide plates 7 is distributed on the first plane and the other air guide plate 7 is distributed on the second plane, and the first plane is parallel to the second plane.

[0128] Specifically, the air guide plate 7 is provided with a hinge hole 703, the connecting shaft 1309 is hinged to the hinge hole 703, and the connecting shaft 1309 is axially limited by a second limiting structure to prevent the connecting shaft 1309 from disengaging from the hinge hole 703. The second limiting structure can be a screw or a nut.

[0129] In one embodiment, the housing 9 includes an annular grille 904, which is disposed opposite to the annular air duct 3.

[0130] In this embodiment, by setting an annular grille 904, the heating component 6 located in the annular air duct 3 can be shielded, making the appearance more aesthetically pleasing. It 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.

[0131] Specifically, the annular grille 904 has multiple through holes to allow airflow to pass through.

[0132] Specifically, the annular grille 904 and the cylindrical shell 901 are integrally formed.

[0133] In one embodiment, the housing 9 includes a first grille 905, which is disposed opposite to the central air duct 2.

[0134] In this embodiment, the first grille 905 can cover the parts inside the central air duct 2, making the appearance more aesthetically pleasing while ensuring safe use.

[0135] Specifically, the first grille 905 is integrally formed with the cylindrical shell 901, the annular grille 904, and the first central connecting part 903.

[0136] Specifically, the first grille 905 includes multiple spokes, with airflow passing between adjacent spokes.

[0137] In one embodiment, the head assembly includes a second grille 14 disposed on the side of the main air duct 1 away from the central air duct 2.

[0138] In this embodiment, the second grille 14 is provided, which makes the appearance more aesthetically pleasing and ensures safety during use.

[0139] Specifically, when the main motor 4 is in the first working state, the fan blade 5 rotates in the first direction, driving the airflow. The airflow enters from the first grille 905 and is blown out from the second grille 14. When the main motor 4 is in the second working state, the fan blade 5 rotates in the second direction, driving the airflow. The airflow enters from the second grille 14 and is blown out through the annular grille 904.

[0140] In one embodiment, the head assembly is connected to a oscillating motor.

[0141] In this embodiment, the oscillating motor enables the head assembly to oscillate, achieving a wider airflow range. When blowing cold air, the second grille 14 faces the user; when blowing warm air, the first grille 905 of the oscillating assembly faces the user.

[0142] In one specific embodiment, the oscillating motor can realize the pitching or swaying of the head assembly.

[0143] According to an embodiment of the present invention, another aspect provides an air outlet device, including the head assembly provided in the above embodiments.

[0144] When the air outlet needs to blow cold air, the heating element 6 does not work, and the main motor 4 drives the fan blade 5 to rotate, causing airflow. Driven by the airflow or the drive component, the air guide plate 7 switches to the first position, connecting the main air duct 1 with the central air duct 2. The air guide plate 7 blocks the connection between the main air duct 1 and the annular air duct 3, allowing the airflow to pass through the central air duct 2 without entering the annular air duct 3. This prevents dust in the air from entering the annular air duct 3 and causing dust accumulation in the heating element 6. Furthermore, the heating element 6 does not create wind resistance for the cold air, ensuring the airflow volume of the cold air. When warm air is needed, the heating element 6 works, and the main motor 4 drives the fan blade 5 to rotate, causing airflow. Driven by the airflow or the drive component, the air guide plate 7 switches to the second position, connecting the main air duct 1 with the annular air duct 3. The air guide plate 7 blocks the connection between the main air duct 1 and the central air duct 2. The airflow passes through the annular air duct 3 and is heated by the heating element 6, so the blown air is warm air. The heating element 6 is located in the annular air duct 3, and the air-gathering effect of the annular air duct 3 makes the airflow flow evenly through the heating element 6, achieving the best heating effect.

[0145] In one embodiment, the air outlet device is a fan or a heater.

[0146] 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). 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 main air duct (1) is provided with a fan blade (5) and a main motor (4) that can drive the fan blade (5) to rotate. A heating element (6) is disposed in the annular air duct (3); The air guide plate assembly includes multiple air guide plates (7), which are movable to have a first position and a second position. In the first position, the main air duct (1) is connected to the central air duct (2), and the air guide plate (7) blocks the connection between the main air duct (1) and the annular air duct (3). In the second position, the main air duct (1) is connected to the annular air duct (3), and the air guide plate (7) blocks the connection between the main air duct (1) and the central air duct (2). The air guide plate (7) is adapted to switch between the first position and the second position under the drive of the airflow generated when the fan blade (5) rotates or under the drive of the drive assembly.

2. The head assembly according to claim 1, characterized in that, The main motor (4) 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 (4) is in the first working state, the air guide plate (7) is switched to the first position, and the airflow enters the main air duct (1) after passing through the central air duct (2) and is then blown out. When the main motor (4) is in the second working state, the air guide plate (7) is switched to the second position, and the airflow enters the annular air duct (3) through the main air duct (1) and is then blown out.

3. The head assembly according to claim 1 or 2, characterized in that, The annular air duct (3) is provided with a rotating connection part, and one end of the air guide plate (7) is connected to the rotating connection part. The air guide plate (7) is adapted to rotate around the rotation axis of the rotating connection part to switch between the first position and the second position.

4. The head assembly according to claim 3, characterized in that, The air guide plate (7) includes a plate body (701) and a connecting part (702) provided at one end of the plate body (701). The connecting part (702) is rotatably connected to the rotating connecting part. When the air guide plate (7) is in the second position, at least part of the plate body (701) is located in the central air duct (2), and the connecting part (702) is located in the annular air duct (3). When the air guide plate (7) is in the first position, the connecting part (702) and at least part of the plate body (701) are located in the annular air duct (3).

5. The head assembly according to claim 4, characterized in that, The maximum width of the connecting part (702) is less than the minimum width of the plate (701).

6. The head assembly according to claim 3, characterized in that, Two adjacent air guide plates (7) are staggered along the axial direction of the main air duct (1) so that one of the two adjacent air guide plates (7) is distributed on the first plane and the other air guide plate (7) is distributed on the second plane, with the first plane and the second plane being parallel.

7. The head assembly according to claim 3, characterized in that, The drive assembly includes a rotating component (8), and the air guide plate (7) is provided with one of a sliding groove (709) and a rotating shaft (803). The rotating component (8) is provided with the other of a sliding groove (709) and a rotating shaft (803). The rotating shaft (803) is slidably and rotatably disposed in the sliding groove (709). When the rotating component (8) rotates, the rotating shaft (803) slides along the sliding groove (709), and the air guide plate (7) rotates around the rotation axis.

8. The head assembly according to claim 7, characterized in that, The rotating component (8) includes a central rotating part (801) and multiple connecting rods (802) located on the outer periphery of the central rotating part (801) and extending in the radial direction. The connecting rods (802) are provided with the sliding groove (709) or the rotating shaft (803).

9. The head assembly according to claim 8, characterized in that, The connecting rod (802) is provided with the rotating shaft (803). One of the rotating shafts (803) on the adjacent connecting rod (802) is located on the side of the connecting rod (802) facing the main air duct (1), and the other is located on the side of the connecting rod (802) away from the main air duct (1).

10. The head assembly according to any one of claims 7 to 9, characterized in that, The head assembly includes a housing (9), which includes a cylindrical shell (901) and a first annular connecting part (902). The cylindrical shell (901) surrounds the outside of the main air duct (1), and the gap between the cylindrical shell (901) and the first annular connecting part (902) forms the annular air duct (3). The inner side of the first annular connecting part (902) forms the central air duct (2).

11. The head assembly according to claim 10, characterized in that, The housing (9) includes a first central connecting portion (903), the rotating member (8) has an engaging portion (804), and the driving assembly includes: The drive motor (10) is fixed relative to the first central connection part (903) or the air duct assembly; The drive gear (11) is connected to the output shaft of the drive motor (10), and the drive gear (11) meshes with the meshing part (804).

12. The head assembly according to claim 11, characterized in that, The drive assembly also includes a fixing plate (12), the drive motor (10) is fixed between the first central connecting part (903) and the fixing plate (12), and the rotating part (8) is rotatably engaged with the fixing plate (12).

13. The head assembly according to claim 12, characterized in that, The rotating component (8) and the fixed plate (12) cooperate through a limiting structure, which is used to limit the rotation angle of the rotating component (8).

14. The head assembly according to claim 12, characterized in that, The head assembly also includes a cover plate (13), the cover plate (13) includes a second central connecting part (1301), the fixed plate (12) is provided with a mounting shaft (1201), the center of the rotating part (8) is provided with a mounting through hole (805), after the mounting shaft (1201) passes through the mounting through hole (805), the mounting shaft (1201) is fixedly connected to the second central connecting part (1301).

15. The head assembly according to claim 14, characterized in that, The cover plate (13) is provided with a first limiting part (1302), which limits the axial movement of the rotating part (8).

16. The head assembly according to claim 14, characterized in that, The cover plate (13) is provided with a second limiting part (1303), which limits the axial movement of the drive gear (11).

17. The head assembly according to claim 14, characterized in that, The cover plate (13) includes an annular connector (1305), which fits against the inner wall of the cylindrical shell (901), and the rotating connection part is provided on the inner side of the annular connector (1305).

18. The head assembly according to claim 17, characterized in that, The rotating connection includes a support (1308) and a connecting shaft (1309). The support (1308) is located on the annular connector (1305). For two adjacent rotating connections, one connecting shaft (1309) is located on the side of the support (1308) facing the main air duct (1), and the other is located on the side of the support (1308) away from the main air duct (1).

19. The head assembly according to claim 17, characterized in that, The annular connector (1305) is provided with a plurality of mating ribs (1306) on its outer side, and the annular connector (1305) is press-fitted with the cylindrical shell (901) through the mating ribs (1306).

20. The nose assembly according to any one of claims 11 to 19, characterized in that, The outer casing (9) includes an annular grille (904), which is disposed opposite to the annular air duct (3).

21. The nose assembly according to any one of claims 11 to 19, characterized in that, The outer casing (9) includes a first grille (905) which is disposed opposite to the central air duct (2).

22. The head assembly according to any one of claims 1, 2, 4 to 9, 11 to 19, characterized in that, The head assembly includes a second grille (14) located on the side of the main air duct (1) away from the central air duct (2).

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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