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 an air outlet device, the machine head assembly comprises an air duct assembly, an air outlet assembly and a motor, the air duct assembly comprises a main air duct and an annular air duct, and the annular air duct is arranged at one end of the main air duct; the heating assembly is arranged on the annular air duct; the machine head assembly has a warm air mode, and in the warm air mode, air flow enters the annular air duct through the main air duct and then is blown out. When a warm air mode is started, after working airflow of the heating assembly enters the main air duct, the working airflow flows from the main air duct to the annular air duct, is heated by the heating assembly and then is blown out, so that loss when hot air is sent out can be avoided, and heat loss during heating is reduced; the air gathering effect of the annular air channel enables air flow to uniformly flow through the heating assembly, and the optimal heating effect can be achieved.

Description

Technical Field

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

[0002] In related technologies, the heating element components of cooling and heating fans mostly use heating wires for heating. The heating wires are coiled and wrapped all over the heating element bracket, so that the heating wires do not cover the entire air inlet or outlet. Because the heating wires cover a large area and the air outlet area is large, the temperature of the air outlet is not concentrated in the warm air mode. Especially in winter when the room temperature is low, the heating effect of the warm air is poor, which affects the user experience. 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 uneven temperature distribution at the air outlet during warm air operation.

[0004] In a first aspect, the present invention provides a nose assembly, comprising: The air duct assembly includes a main air duct and an annular air duct, wherein the annular air duct is disposed at one end of the main air duct; The heating element is located in the annular air duct; The head assembly has a warm air mode, in which airflow enters the annular air duct through the main air duct and is then blown out.

[0005] Beneficial effects: When the heating mode is turned on, the working airflow of the heating element enters the main air duct and flows from the main air duct to the annular air duct. After being heated by the heating element, it is blown out, which can avoid the loss of hot air when it is delivered and reduce the loss of heat during heating. In addition, the heating element is located in the annular air duct. The air gathering effect of the annular air duct makes the airflow flow evenly through the heating element, which can achieve the best heating effect.

[0006] In one alternative embodiment, the heating component includes a heating element comprising at least two turns of heating wires radially spaced along the annular air duct.

[0007] Beneficial effects: The heating element includes at least two rings of heating wires distributed radially at intervals along the annular air duct, which can evenly distribute the heat generated by the heating wires in the annular air duct, covering the annular air duct and avoiding local cold air, resulting in good overall warm air blowing effect.

[0008] In one optional embodiment, the heating component includes a heating element, and the heating component further includes a first heat insulation structure, the first heat insulation structure being disposed on the outer periphery of the heating element and spaced apart from the heating element; And / or, the heating component further includes a second heat insulation structure, the second heat insulation structure being disposed on the inner periphery of the heating element and spaced apart from the heating element.

[0009] Beneficial effects: The first heat insulation structure is located on the outer periphery of the heating element and is spaced apart from the heating element. The first heat insulation structure can prevent the heat generated by the heating element from being transferred to the outer ring wall of the annular air duct. The second heat insulation structure is located on the inner periphery of the heating element and is spaced apart from the heating element. The second heat insulation structure can prevent the heat generated by the heating element from being transferred to the inner ring wall of the annular air duct, ensuring that the heat generated by the heating element is distributed within the annular air duct.

[0010] In one optional embodiment, the heating component includes a heating element support and a heat insulation structure support. Multiple heat insulation structure supports are spaced apart along the circumference of the heating element support. The heat insulation structure supports are connected to the heating element support. The heating element and the first heat insulation structure are disposed on the heat insulation structure support; or, the heating element and the second heat insulation structure are disposed on the heat insulation structure support; or, the heating element, the first heat insulation structure, and the second heat insulation structure are disposed on the heat insulation structure support.

[0011] Beneficial effects: Multiple heat insulation structure supports are spaced apart along the circumference of the heating element support. The heat insulation structure supports are connected to the heating element support. The heat insulation structure supports connect the heating element and the first heat insulation structure into a whole, or the heat insulation structure connects the heating element and the second heat insulation structure into a whole, or the heat insulation structure supports connect the heating wire, the first heat insulation structure, the second heat insulation structure and the heating element support into a whole, without affecting the airflow.

[0012] In one optional embodiment, the heating element support is provided with a first insertion mating part, and the heat insulation structure support is inserted into the first insertion mating part.

[0013] Beneficial effects: The heating element support is provided with a first plug-in mating part, and the heat insulation structure support is plugged into the first plug-in mating part, which facilitates the assembly of the heat insulation structure support and the heating element support and can improve assembly efficiency.

[0014] In one optional embodiment, the heat insulation structure support is provided with a support portion for supporting and limiting the heating element; And / or, the heat insulation structure bracket is provided with a second insertion mating part that is inserted into the first heat insulation structure; And / or, the heat insulation structure support is provided with a third insertion mating part that is inserted into the second heat insulation structure.

[0015] Beneficial effects: By providing a support portion to the heat insulation structure bracket, the heating element can be positioned, improving the assembly efficiency of the heating element. By providing a second insertion portion to the heat insulation structure bracket that mates with the first heat insulation structure, the positioning and installation of the first heat insulation structure is facilitated, improving the assembly efficiency of the first heat insulation structure. By providing a third insertion portion to the heat insulation structure bracket that mates with the second heat insulation structure, the positioning and installation of the second heat insulation structure is facilitated, improving the assembly efficiency of the second heat insulation structure.

[0016] In one optional embodiment, the second insertion mating part is a groove, and the first heat insulation structure is provided with a slot. The slot is adapted to move along the depth direction of the groove so that the slot is engaged on both sides of the heat insulation structure bracket, and at least a portion of the first heat insulation structure is engaged in the groove.

[0017] Beneficial effects: The second insertion mating part is a groove, and the first heat insulation structure is provided with a slot. The slot is located on both sides of the heat insulation structure bracket, and at least part of the first heat insulation structure is located in the groove, which can improve the assembly efficiency between the second heat insulation structure and the heat insulation structure bracket.

[0018] In one optional embodiment, the third insertion mating part includes one of a hook and a hole, and the second heat insulation structure is provided with the other of a hook and a hole, wherein the hook and the hole are engaged for insertion.

[0019] Beneficial effects: The third insertion part includes one of a hook and a hole, and the second heat insulation structure is provided with the other of a hook and a hole. The hook and the hole are inserted together, which can improve the assembly efficiency between the second heat insulation structure and the heat insulation structure bracket.

[0020] In one optional embodiment, the heating element is provided with at least one thermostat, which is mounted between two adjacent heat insulation structure supports and is close to the surface of the heating element. And / or, the heating element is equipped with an overcurrent protector; And / or, the heating assembly further includes at least one binding member, which is bound to the heating element support, the first heat insulation structure, the second heat insulation structure, and the outside of the heating element.

[0021] Beneficial effects: The thermostat can detect if the heating element is abnormally overheated. If the heating element temperature exceeds the preset value, it automatically cuts off the power supply to the heating element. Furthermore, the thermostat is mounted between two adjacent heat-insulating structure supports, close to the surface of the heating element. The heat generated by the heating element is located around the thermostat, preventing localized cold air from flowing past it. The overcurrent protector can detect if there is a short circuit or other abnormality causing a sudden increase in current. If the current is too high, the overcurrent protector will automatically melt, disconnecting the power supply circuit to the heating element, providing safety protection. The strapping is used to secure the heating element support, the first heat-insulating structure, the second heat-insulating structure, and the outside of the heating element, connecting them into a unified whole, resulting in a more stable structure.

[0022] In one optional embodiment, the air duct assembly further includes a central air duct, and the annular air duct is disposed on the outer periphery of the central air duct; the head assembly further includes: An air guide plate assembly includes multiple air guide plates, the multiple air guide plates having a closed position for closing the central air duct and an open position for opening the central air duct; A drive assembly, connected to a plurality of the air guide plates, is capable of driving the air guide plates to switch between the closed position and the open position. In the warm air mode, the drive assembly drives the air guide plates to switch to the closed position. The head assembly also has a cold air mode, in which the drive assembly drives the air guide plate to switch to the open position.

[0023] Beneficial effects: In cold air mode, the heating element is not working. The drive component controls the air guide plate to switch to the open position. After the airflow enters the main air duct, it flows from the main air duct to the central air duct and the annular air duct, and is then blown out through the central air duct and the annular air duct, ensuring that the cold air is strong enough and the air volume is large. In warm air mode, the heating element is working, and the drive component controls the air guide plate to switch to the closed position. After the airflow enters the main air duct, it flows from the main air duct to the annular air duct. After being heated by the heating element, it is blown out, which can avoid the loss of hot air during delivery and reduce the loss of heat during heating. In addition, the heating element is located in the annular air duct. The airflow concentration effect of the annular air duct ensures that the airflow flows evenly over the heating element, achieving the best heating effect.

[0024] In one optional embodiment, the air guide plate assembly includes a first mounting bracket, the first mounting bracket including a first central connecting portion and a first annular connecting portion, the air guide plate being rotatably disposed between the first central connecting portion and the first annular connecting portion, the air guide plate including a plate body, when the air guide plate is in the closed position, the plate bodies of each air guide plate are formed on the same plane or annular cone surface or adjacent plate bodies at least partially overlap, so as to block the connection between the main air duct and the central air duct, when the air guide plate is in the open position, an air vent is formed between adjacent plate bodies to allow airflow to pass through so as to connect the main air duct and the central air duct.

[0025] Beneficial effects: When the air guide plates are in the closed position, the plates are formed on the same plane, annular cone, or adjacent plates at least partially overlap, which can block airflow through the central air duct. When the air guide plates are in the open position, an air passage is formed between adjacent plates, allowing airflow to pass through the first mounting bracket. By setting the first mounting bracket, the air guide plate assemblies can be pre-assembled, facilitating the assembly of the entire head assembly.

[0026] In one optional embodiment, the first central connecting portion and the first annular connecting portion are connected by a plurality of radially arranged first connecting ribs. Along the radial direction of the main air duct, the first connecting ribs gradually tilt away from the main air duct. The air guide plate is disposed on the first mounting bracket. When the air guide plate is switched to the closed position, along the radial direction of the main air duct, the air guide plate gradually tilts away from the main air duct.

[0027] In one optional embodiment, the first central connecting portion and / or the first annular connecting portion are provided with a plurality of first slots along the circumferential direction, and the air guide plate includes a rotating shaft located at at least one end of the plate body, the rotating shaft being disposed in the first slot.

[0028] 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, improves assembly efficiency, and allows the air guide plate to switch between the open and closed positions under the limit of the first slot.

[0029] In one optional embodiment, the air guide plate further includes a rocker arm, and the driving assembly includes a rotating component. The rotating component is provided with a plurality of actuating slots spaced apart along the circumference, and the rocker arm is disposed in the actuating slots. When the rotating component rotates, it drives the rocker arm to move, thereby driving the air guide plate to rotate.

[0030] 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.

[0031] In one alternative embodiment, the rotating member has an engaging portion, and the drive assembly further includes: A drive motor is fixed relative to the first central connection part or the air duct assembly; The drive gear is connected to the output shaft of the drive motor and meshes with the meshing part.

[0032] Beneficial effects: When the drive motor is working, it drives the drive gear to rotate. The drive gear meshes with the meshing part of the rotating part, thereby driving the rotating part to rotate, which in turn drives the rocker arm to rotate to a certain extent, thereby simultaneously driving each air guide plate to flip. The drive assembly has a simple structure and reliable transmission.

[0033] In one optional embodiment, the air guide plate assembly further includes a drive motor bracket, the drive motor bracket being fixedly connected to the first central connecting portion, the drive motor being fixed to the drive motor bracket, and the rotating component being rotatably engaged with the drive motor bracket.

[0034] Beneficial effects: By setting up a drive motor bracket, the installation of the drive motor is facilitated. In addition, the rotating part and the drive motor bracket rotate in coordination, and the drive motor bracket can limit the rotation of the rotating part and ensure that the rotating part can rotate smoothly.

[0035] In one optional embodiment, the drive motor bracket is provided with a mounting shaft, the rotating component is provided with a mounting through hole, the mounting shaft passes through the mounting through hole, and the mounting shaft is fixedly connected to the first central connecting part.

[0036] Beneficial effects: After the mounting shaft passes through the mounting hole, it is fixedly connected to the first central connecting part, which can connect the drive motor bracket, rotating parts and the first mounting bracket into a whole, which can improve assembly stability and assembly efficiency.

[0037] In one optional embodiment, the rotating component and the drive motor bracket are engaged by a limiting structure, which is used to limit the rotation angle of the rotating component.

[0038] 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.

[0039] In one optional embodiment, the rotating component is positioned between the drive motor bracket and the first central connection portion, the first central connection portion being provided with a first limiting portion, the first limiting portion restricting the rotating component from moving axially.

[0040] Beneficial effects: The first limiting part restricts the axial movement of the rotating part, which can prevent the rotating part from moving axially and causing the rotating shaft of the air guide plate to disengage from the first slot on the first mounting bracket. This avoids the air guide plate from disengaging from the limiting part of the first mounting bracket and thus preventing the air guide plate from smoothly switching between the open and closed positions.

[0041] In one alternative embodiment, the first central connecting portion is provided with a second limiting portion, which restricts the drive gear from moving axially.

[0042] Beneficial effect: By setting a second limiting part, the drive gear can be prevented from moving axially.

[0043] In one optional embodiment, the head assembly further includes a housing, in which the main air duct, the air guide plate assembly, the drive assembly, and the heating assembly are all disposed, and the first mounting bracket is connected to the housing.

[0044] Beneficial effects: By setting up an outer shell, the main air duct, air guide plate assembly, drive assembly and heating assembly are all located inside the outer shell, making the appearance more beautiful. The first mounting bracket is connected to the outer shell, which can fix the first mounting bracket inside the outer shell. During assembly, the air guide plate assembly is first assembled into a whole, and then the first mounting bracket in the air guide plate assembly is installed into the outer shell to realize the assembly of the air guide plate assembly into the outer shell.

[0045] In one optional embodiment, the air duct assembly includes an air duct structure, the air duct structure including a first annular wall panel, a first connecting wall panel and a second annular wall panel, the inner side of the first annular wall panel forms the main air duct, one end of the first connecting wall panel is connected to the outer wall of the first annular wall panel, the gap between the second annular wall panel and the first annular connecting portion forms the annular air duct, and the inner side of the first annular connecting portion forms the central air duct. Alternatively, the central air duct and the annular air duct are formed within the outer casing; Alternatively, the first mounting bracket may further include an annular connecting plate surrounding the outside of the first annular connecting portion, the gap between the annular connecting plate 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.

[0046] In one optional embodiment, the heating component is detachably connected to the first annular connecting portion; Alternatively, the heating element can be connected to the air duct structure; Alternatively, the heating element is connected to the housing.

[0047] Beneficial effects: The heating element is detachably connected to the first annular connecting part, which facilitates the installation of the heating element.

[0048] In one optional embodiment, the outer shell includes a cylindrical shell, a second central connecting portion, and a second annular connecting portion, wherein the second annular connecting portion is correspondingly connected to the first annular connecting portion.

[0049] Beneficial effect: The second annular connecting part is connected to the first annular connecting part, which can stably connect the first mounting bracket to the outer shell.

[0050] In one alternative embodiment, the air guide plate assembly further includes a drive motor bracket, and the drive assembly includes a drive motor disposed between the drive motor bracket and the second central connection portion.

[0051] Beneficial effect: The drive motor is positioned between the drive motor bracket and the second center connection, which ensures effective fixation of the drive motor.

[0052] In one optional embodiment, the first annular connecting portion is provided with a plurality of first slots along the circumference, and the second annular connecting portion is provided with a plurality of second slots along the circumference. The second slots are arranged opposite to and correspond one-to-one with the first slots. The air guide plate is provided with a rotating shaft at one end near the first annular connecting portion, and the rotating shaft is limited between the first slots and the second slots.

[0053] Beneficial effects: By setting a second slot in the second annular connecting part, when the first annular connecting part is connected to the second annular connecting part, the rotating shaft at one end of the plate is limited between the first slot of the first annular connecting part and the second slot of the second annular connecting part. This can prevent the air guide plate from falling off the first mounting bracket and can also effectively prevent the air guide plate from moving up, down, left, and right significantly when the rotating shaft rotates.

[0054] In one alternative embodiment, the head assembly further includes an annular grille connected to the housing, or the annular grille is integrally formed with the housing, and the annular grille is disposed opposite to the annular air duct.

[0055] And / or, the head assembly further includes a first grille connected to the housing and opposite the central air duct; And / or, the head assembly further includes a second grille, the second grille being disposed at one end of the main air duct away from the central air duct, or the second grille being disposed at one end of the housing away from the central air duct.

[0056] Beneficial effects: By installing a ring-shaped grille, the heating components located within the ring-shaped air duct can be concealed, resulting in a more aesthetically pleasing appearance. It also prevents users from accidentally inserting their hands into the ring-shaped air duct, thus avoiding electrical safety hazards such as burns or electric shocks. The first grille provides some concealment of the central air duct and internal air guide plate components, ensuring safe operation. The second grille further enhances the overall appearance of the unit and ensures safe operation.

[0057] Secondly, the present invention also provides an air outlet device, comprising: The aforementioned head assembly.

[0058] In one alternative implementation, the air outlet device is a fan or a heater. Attached Figure Description

[0059] 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.

[0060] 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 This is a schematic diagram of a head assembly with the outer shell, annular grille, and first grille removed, and the air guide plate assembly in the closed position, according to an embodiment of the present invention. Figure 4 for Figure 3 Enlarged view of point B in the middle; Figure 5 This is a schematic diagram of a head assembly according to an embodiment of the present invention; Figure 6 This is a schematic diagram of a heating component in a head assembly according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the heating element support; Figure 8 This is a schematic diagram of the thermal insulation structure support; Figure 9 This is a schematic diagram of the first thermal insulation structure; Figure 10 This is a schematic diagram of the second thermal insulation structure; Figure 11 This is the front view of the casing; Figure 12 for Figure 11 Enlarged view of point C in the middle; Figure 13 This is a schematic diagram of the air guide plate; Figure 14 This is a schematic diagram of a rotating component; Figure 15 This is a schematic diagram of a first mounting bracket in an alternative embodiment; Figure 16 This is a schematic diagram of a first mounting bracket in another alternative embodiment.

[0061] Explanation of reference numerals in the attached figures: 1. Air duct structure; 101. Main air duct; 102. First annular wall panel; 103. First connecting wall panel; 104. Second annular wall panel; 2. Central air duct; 3. Annular air duct; 4. Air guide plate; 401. Plate body; 402. Rotating shaft; 403. Rocker arm; 5. Fan blade; 6. Main motor; 7. First mounting bracket; 701. First central connecting part; 702. First annular connecting part; 7021. Annular rib; 70 22. Annular plate; 703. First slot; 704. First connecting rib; 705. Screw through hole; 706. First limiting part; 707. Second limiting part; 708. Annular connecting plate; 709. Second engaging part; 710. First screw hole; 8. Rotating component; 801. Actuating groove; 802. Engaging part; 803. Limiting groove; 804. Mounting through hole; 805. Annular stepped surface; 9. Drive motor; 10. Drive gear; 11. Drive motor bracket; 1101. Mounting shaft; 12. Housing; 1201. Second annular connecting part; 12011. Second slot; 1202. Cylindrical housing; 1203. Second central connecting part; 1204. Second connecting rib; 1205. First screw post; 13. First grille; 14. Second grille; 15. Heating element; 1501. Heating element bracket; 15011. Fixing groove; 15012, First engaging part; 1502, Heating wire; 15021, Lead wire; 1503, Heat insulation structure bracket; 15031, Support part; 15032, Groove; 15033, Hook; 1504, First heat insulation structure; 15041, Slot; 1505, Second heat insulation structure; 15051, Hole; 1506, Bundling component; 16, Thermostat; 17, Overcurrent protector; 18, Annular grille. Detailed Implementation

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] The following is combined with Figures 1 to 16 The following describes embodiments of the present invention.

[0067] According to an embodiment of the present invention, in one aspect, a head assembly is provided, including an air duct assembly and a heating assembly 15.

[0068] The air duct assembly includes a main air duct 101 and an annular air duct 3, with the annular air duct 3 located at one end of the main air duct 101; the heating element 15 is located in the annular air duct 3; the head assembly has a warm air mode, in which airflow enters the annular air duct 3 through the main air duct 101 and is then blown out.

[0069] In this embodiment, when the warm air mode is turned on, the working airflow of the heating element 15 enters the main air duct 101 and flows from the main air duct 101 to the annular air duct 3. After being heated by the heating element 15, it is blown out, which can avoid the loss of hot air when it is delivered and reduce the loss of heat during heating. Furthermore, the heating element 15 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 15, which can achieve the optimal heating effect.

[0070] In one specific embodiment, the main air duct 101 is provided with a fan blade 5 and a main motor 6 that can drive the fan blade 5 to rotate.

[0071] In one embodiment, the heating component 15 includes a heating element comprising at least two coils of heating wire 1502 distributed radially spaced along the annular air duct 3.

[0072] In this embodiment, the heating element includes at least two coils of heating wire 1502 distributed radially at intervals along the annular air duct 3, which can make the heat generated by the heating wire 1502 evenly distributed in the annular air duct 3, covering the annular air duct 3, avoiding the occurrence of local cold air, and the overall warm air blowing effect is good.

[0073] In one specific embodiment, the heating element includes two coils of heating wires 1502 distributed radially at intervals along the annular air duct 3.

[0074] Specifically, the end of the heating wire 1502 is provided with a lead wire 15021. Figure 6 The diagram shows three leads 15021: one connected to the live wire, one connected to the neutral wire, and one serving as the setting wire for the heating element 1502.

[0075] Specifically, the distance between the two ends of the heating wire 1502 is small, and the heating component 15 is set in the annular air duct 3. The space where the lead wire 15021 is located is small, and the airflow can be heated by the heat generated by the heating wire 1502 when it passes through the space, thus avoiding the occurrence of local cold air.

[0076] In one embodiment, the heating component 15 includes a heating element, and the heating component 15 further includes a first heat insulation structure 1504, which is disposed on the outer periphery of the heating element and spaced apart from the heating element; and / or, the heating component 15 further includes a second heat insulation structure 1505, which is disposed on the inner periphery of the heating element and spaced apart from the heating element.

[0077] In this embodiment, the first heat insulation structure 1504 is disposed on the outer periphery of the heating element and spaced apart from the heating element. The first heat insulation structure 1504 can prevent the heat generated by the heating element from being transferred to the outer ring wall of the annular air duct 3. The second heat insulation structure 1505 is disposed on the inner periphery of the heating element and spaced apart from the heating element. The second heat insulation structure 1505 can prevent the heat generated by the heating element from being transferred to the inner ring wall of the annular air duct 3, ensuring that the heat generated by the heating element is distributed within the annular air duct 3.

[0078] In a preferred embodiment, the heating component 15 includes both a first heat insulation structure 1504 and a second heat insulation structure 1505.

[0079] In one specific embodiment, the heating element includes at least two rings of heating wires 1502 distributed radially at intervals along the annular air duct 3. A first heat insulation structure 1504 is disposed on the outer periphery of the outermost ring of heating wires 1502, and a second heat insulation structure 1505 is disposed on the inner periphery of the innermost ring of heating wires 1502.

[0080] In one specific embodiment, the first heat insulation structure 1504 and the second heat insulation structure 1505 are annular heat insulation mica sheets.

[0081] In one embodiment, the heating component 15 includes a heating element support 1501 and a heat insulation structure support 1503. Multiple heat insulation structure supports 1503 are spaced apart along the circumference of the heating element support 1501. The heat insulation structure supports 1503 are connected to the heating element support 1501. The heating element and the first heat insulation structure 1504 are disposed on the heat insulation structure support 1503; or, the heating element and the second heat insulation structure 1505 are disposed on the heat insulation structure support 1503; or, the heating element, the first heat insulation structure 1504, and the second heat insulation structure 1505 are disposed on the heat insulation structure support 1503.

[0082] In this embodiment, multiple heat insulation structure supports 1503 are spaced apart along the circumference of the heating element support 1501. The heat insulation structure supports 1503 are connected to the heating element support 1501. The heat insulation structure supports 1503 connect the heating element and the first heat insulation structure 1504 into a whole, or the heat insulation structure supports 1503 connect the heating element and the second heat insulation structure 1505 into a whole, or the heat insulation structure supports 1503 connect the heating wire 1502, the first heat insulation structure 1504, the second heat insulation structure 1505 and the heating element support 1501 into a whole, without affecting the airflow.

[0083] In one embodiment, the heating element support 1501 is provided with a first insertion mating part, and the heat insulation structure support 1503 is inserted into the first insertion mating part.

[0084] In this embodiment, the heating element support 1501 is provided with a first insertion mating part, and the heat insulation structure support 1503 is inserted into the first insertion mating part, which facilitates the assembly of the heat insulation structure support 1503 and the heating element support 1501 and can improve assembly efficiency.

[0085] In one specific embodiment, the first insertion mating part is a fixing groove 15011, and the heat insulation structure bracket 1503 is inserted into the fixing groove 15011 with an interference fit.

[0086] In one embodiment, the heat insulation structure bracket 1503 is provided with a support portion 15031 for supporting and limiting the heating element; and / or, the heat insulation structure bracket 1503 is provided with a second insertion and mating portion that is engaged with the first heat insulation structure 1504; and / or, the heat insulation structure bracket 1503 is provided with a third insertion and mating portion that is engaged with the second heat insulation structure 1505.

[0087] In this embodiment, by providing a support portion 15031 in the heat insulation structure bracket 1503, the heating element can be positioned, improving the assembly efficiency of the heating element. By providing a second insertion portion in the heat insulation structure bracket 1503 that mates with the first heat insulation structure 1504, the positioning and installation of the first heat insulation structure 1504 is facilitated, improving the assembly efficiency of the first heat insulation structure 1504. By providing a third insertion portion in the heat insulation structure bracket 1503 that mates with the second heat insulation structure 1505, the positioning and installation of the second heat insulation structure 1505 is facilitated, improving the assembly efficiency of the second heat insulation structure 1505.

[0088] Specifically in one embodiment, such as Figure 8 As shown, the support part 15031 is a U-shaped groove, and the heating element includes two rings of heating wires 1502 distributed radially at intervals along the annular air duct 3. Each heat insulation structure support 1503 is provided with two U-shaped grooves.

[0089] In one embodiment, such as Figure 8 and Figure 9 The second insertion mating part is a groove 15032, and the first heat insulation structure 1504 is provided with a slot 15041. The slot 15041 is adapted to move along the depth direction of the groove 15032 so that the slot 15041 is engaged on both sides of the heat insulation structure bracket 1503, and at least part of the first heat insulation structure 1504 is engaged in the groove 15032.

[0090] In this embodiment, the second insertion mating part is a groove 15032, and the first heat insulation structure 1504 is provided with a slot 15041. The slot 15041 is engaged on both sides of the heat insulation structure bracket 1503, and at least part of the first heat insulation structure 1504 is engaged in the groove 15032, which can improve the assembly efficiency between the second heat insulation structure 1505 and the heat insulation structure bracket 1503.

[0091] In one embodiment, the third insertion mating part includes one of a hook 15033 and a hole 15051, and the second heat insulation structure 1505 is provided with the other of the hook 15033 and the hole 15051, wherein the hook 15033 and the hole 15051 are engaged and inserted.

[0092] In this embodiment, the third insertion mating part includes one of a hook 15033 and a locking hole 15051, and the second heat insulation structure 1505 is provided with the other of the hook 15033 and the locking hole 15051. The hook 15033 and the locking hole 15051 are inserted into each other, which can improve the assembly efficiency between the second heat insulation structure 1505 and the heat insulation structure bracket 1503.

[0093] Specifically in one embodiment, such as Figure 8 and Figure 10 The third insertion part is a hook 15033, and the second heat insulation structure 1505 is provided with a locking hole 15051.

[0094] In one embodiment, the heating element 15 is provided with at least one thermostat 16, which is mounted between two adjacent heat insulation structure supports 1503 and is close to the surface of the heating element; and / or, the heating element 15 is provided with an overcurrent protector 17; and / or, the heating element 15 further includes at least one binding member 1506, which is bound to the heating element support 1501, the first heat insulation structure 1504, the second heat insulation structure 1505 and the outside of the heating element.

[0095] In this embodiment, the thermostat 16 can detect whether the heating element has an abnormally high temperature. If the heating element temperature exceeds a preset value, it automatically cuts off the power supply to the heating element. The thermostat 16 is mounted between two adjacent heat-insulating structure supports 1503, and is close to the surface of the heating element. The heat generated by the heating element is located around the thermostat 16, preventing localized cold air from flowing past it. The overcurrent protector 17 can detect whether the heating element has a short circuit or other abnormality causing a sudden increase in current. If the current is too high, the overcurrent protector 17 will automatically melt, disconnecting the power supply circuit to the heating element, thus providing safety protection. The strapping 1506 is strapped to the heating element support 1501, the first heat-insulating structure 1504, the second heat-insulating structure 1505, and the outside of the heating element, connecting them into a whole, making the structure more stable.

[0096] In one embodiment, the air duct assembly further includes a central air duct 2, and an annular air duct 3 is disposed on the outer periphery of the central air duct 2. The head assembly further includes an air guide plate assembly and a drive assembly. The air guide plate assembly includes multiple air guide plates 4, which have a closed position for closing the central air duct 2 and an open position for opening the central air duct 2. The drive assembly is connected to the multiple air guide plates 4 and is capable of driving the air guide plates 4 to switch between the closed position and the open position. In the warm air mode, the drive assembly drives the air guide plates 4 to switch to the closed position. The head assembly also has a cold air mode. In the cold air mode, the drive assembly drives the air guide plates 4 to switch to the open position.

[0097] In this embodiment, during the cold air mode, the heating element 15 is not working. The drive component controls the air guide plate 4 to switch to the open position. After the airflow enters the main air duct 101, it flows from the main air duct 101 to the central air duct 2 and the annular air duct 3 respectively. After being blown out through the central air duct 2 and the annular air duct 3, the cold air is ensured to be strong enough and the air volume is large. During the warm air mode, the heating element 15 is working. The drive component controls the air guide plate 4 to switch to the closed position. After the airflow enters the main air duct 101, it flows from the main air duct 101 to the annular air duct 3. After being heated by the heating element 15, it is blown out. This avoids the loss of hot air when it is delivered and reduces the loss of heat during heating. Furthermore, the heating element 15 is located in the annular air duct 3. The air gathering effect of the annular air duct 3 ensures that the airflow flows evenly over the heating element 15, achieving the optimal heating effect.

[0098] It should be noted that "multiple" means at least two, and "multiple air guides 4" specifically refers to at least two air guides 4.

[0099] In one embodiment, the air guide plate assembly includes a first mounting bracket 7, which includes a first central connecting portion 701 and a first annular connecting portion 702. The air guide plate 4 is rotatably disposed between the first central connecting portion 701 and the first annular connecting portion 702. The air guide plate 4 includes a plate body 401. When the air guide plate 4 is in the closed position, the plate bodies 401 of each air guide plate 4 are formed on the same plane or annular cone surface or adjacent plate bodies 401 at least partially overlap to block the communication between the main air duct 101 and the central air duct 2. When the air guide plate 4 is in the open position, an air vent is formed between adjacent plate bodies 401 to allow airflow to pass through so that the main air duct 101 and the central air duct 2 can communicate.

[0100] In this embodiment, when the air guide plate 4 is in the closed position, the plate bodies 401 of each air guide plate 4 are formed on the same plane or an annular cone surface, or adjacent plate bodies 401 at least partially overlap, which can block the airflow from passing through the central air duct 2. When the air guide plate 4 is in the open position, an air-blocking opening is formed between adjacent plate bodies 401 to allow the airflow to pass through the first mounting bracket 7. By setting the first mounting bracket 7, the air guide plate assembly can be pre-assembled, which facilitates the assembly of the entire head assembly.

[0101] In this embodiment, the plate 401 is a flat plate. When the plate 401 is a curved plate, the air guide plate 4 is in the open position, and the air passage between two adjacent plates 401 can allow airflow to pass through.

[0102] In one embodiment, the first central connecting part 701 and the first annular connecting part 702 are connected by a plurality of radially arranged first connecting ribs 704. Along the radial direction of the main air duct 101, the first connecting ribs 704 gradually tilt away from the main air duct 101. The air guide plate 4 is disposed on the first mounting bracket 7. When the air guide plate 4 is switched to the closed position, along the radial direction of the main air duct 101, the air guide plate 4 gradually tilts away from the main air duct 101.

[0103] Specifically, the head assembly also includes a housing 12. The air guide plate assembly is positioned between the first mounting bracket 7 and the housing 12, radially along the main air duct 101. The first connecting rib 704 gradually tilts away from the main air duct 101, and the first central connecting part 701 is closer to the main air duct 101, creating a larger space between the first mounting bracket 7 and the housing 12 to accommodate the air guide plate assembly, thus avoiding the unsightly appearance caused by the housing 12 protruding outwards. Secondly, the air guide plate assembly is positioned between the first mounting bracket 7 and the housing 12, radially along the main air duct 101. The first connecting rib 704 gradually tilts away from the main air duct 101. When the air guide plate 4 is switched to the closed position, it also gradually tilts away from the main air duct 101 radially. The tilted air guide plate 4 makes it easier for the airflow from the main air duct 101 to flow into the annular air duct 3, reducing airflow resistance and avoiding dead airflow angles.

[0104] In a preferred embodiment, when the air guide plate 4 is in the open position, the plate body 401 is parallel to the axis of the main air duct 101.

[0105] In an alternative embodiment, the air guide plate 4 can be unfolded and retracted like a folding fan, closing the central air duct 2 when unfolded and opening the central air duct 2 when retracted.

[0106] In one specific embodiment, the plate body 401 of the air guide plate 4 is fan-shaped, and multiple air guide plates 4 are evenly arranged circumferentially. When multiple air guide plates 4 are simultaneously in the closed position, the multiple air guide plates 4 are in a plane or annular cone, or the plate bodies 401 of adjacent air guide plates 4 at least partially overlap.

[0107] In one embodiment, the first central connecting portion 701 and / or the first annular connecting portion 702 are provided with a plurality of first slots 703 in the circumferential direction, and the air guide plate 4 includes a rotating shaft 402 located at at least one end of the plate body 401, the rotating shaft 402 being disposed in the first slots 703.

[0108] In this embodiment, the air guide plate 4 includes a rotating shaft 402 located at at least one end of the plate body 401. The rotating shaft 402 is disposed in the first slot 703, which facilitates the positioning and installation of the air guide plate 4, improves assembly efficiency, and also allows the air guide plate 4 to switch between the open and closed positions under the limitation of the first slot 703.

[0109] In a preferred embodiment, both the first central connecting portion 701 and the first annular connecting portion 702 are provided with a plurality of first slots 703 along the circumferential direction. The first slots 703 provided in the first central connecting portion 701 and the first slots 703 provided in the first annular connecting portion 702 correspond one-to-one. The air guide plate 4 includes a rotating shaft 402 located at both ends of the plate body 401, and the rotating shafts 402 at both ends are disposed in the corresponding first slots 703.

[0110] In this embodiment, the air guide plate 4 includes rotating shafts 402 located at both ends of the plate body 401. The rotating shaft 402 at one end of the plate body 401 is disposed in the first slot 703 of the first central connecting part 701, and the rotating shaft 402 at the other end of the plate body 401 is disposed in the first slot 703 of the first annular connecting part 702, which facilitates the positioning and installation of the air guide plate 4 and can improve assembly efficiency.

[0111] In other alternative embodiments, through holes may be provided in the first central connecting portion 701 and the first annular connecting portion 702, and the rotating shaft 402 may be rotatably disposed in the through holes.

[0112] In one embodiment, the air guide plate 4 further includes a rocker arm 403, and the driving component includes a rotating member 8. The rotating member 8 is provided with a plurality of actuating grooves 801 spaced apart along the circumference. The rocker arm 403 is disposed in the actuating grooves 801. When the rotating member 8 rotates, it drives the rocker arm 403 to move, thereby driving the air guide plate 4 to rotate.

[0113] In this embodiment, the rocker arm 403 is located in the actuation groove 801, and the rotating shafts 402 at both ends of the plate 401 are located in the first slots 703, allowing for quick assembly of the air guide plate 4. When the rotating component 8 rotates, it drives the rocker arm 403 to move, thereby driving the air guide plate 4 to rotate. Therefore, the rotation of one rotating component 8 can simultaneously drive multiple air guide plates 4 to rotate together, resulting in a simpler structure and lower cost.

[0114] Specifically, the joystick 403 and the plate 401 are not coplanar.

[0115] Specifically, the rocker arm 403 is connected to one of the rotating shafts 402. Preferably, the rocker arm 403 is connected to the rotating shaft 402 near the rotating member 8.

[0116] In one embodiment, the rotating member 8 has a meshing portion 802, and the driving assembly further includes: a driving motor 9, which is fixed relative to the first central connection portion 701 or the air duct assembly; and a drive gear 10, which is connected to the output shaft of the driving motor 9 and meshes with the meshing portion 802.

[0117] In this embodiment, when the drive motor 9 is working, it drives the drive gear 10 to rotate. The drive gear 10 meshes with the meshing part 802 of the rotating part 8, thereby driving the rotating part 8 to rotate, which in turn drives the rocker arm 403 to rotate to a certain extent, thereby simultaneously driving each air guide plate 4 to flip. The drive assembly has a simple structure and reliable transmission.

[0118] In one specific embodiment, the meshing part 802 has internal meshing teeth, the driving gear 10 has external meshing teeth, and the driving gear 10 is located inside the driven gear, thereby making the structure of the drive assembly more compact.

[0119] In one embodiment, the air guide plate assembly further includes a drive motor bracket 11, which is fixedly connected to the first central connection portion 701. The drive motor 9 is fixed to the drive motor bracket 11, and the rotating component 8 is rotatably engaged with the drive motor bracket 11.

[0120] In this embodiment, by providing a drive motor bracket 11, the installation of the drive motor 9 is facilitated. In addition, the rotating part 8 is rotatably engaged with the drive motor bracket 11, and the drive motor bracket 11 can limit the rotation of the rotating part 8 and ensure that the rotating part 8 can rotate smoothly.

[0121] In one specific embodiment, the drive motor bracket 11 is connected to the first central connection portion 701 by screws and / or snap fasteners.

[0122] In one embodiment, the drive motor bracket 11 is provided with a mounting shaft 1101, and the rotating member 8 is provided with a mounting through hole 804. After the mounting shaft 1101 passes through the mounting through hole 804, the mounting shaft 1101 is fixedly connected to the first central connecting part 701.

[0123] In this embodiment, after the mounting shaft 1101 passes through the mounting through hole 804, the mounting shaft 1101 is fixedly connected to the first central connecting part 701, which can connect the drive motor bracket 11, the rotating part 8 and the first mounting bracket 7 into a whole, thereby improving assembly stability and assembly efficiency.

[0124] In one specific embodiment, the first central connecting part 701 is provided with a screw through hole 705, and the mounting shaft 1101 is provided with a threaded hole. The screw passes through the screw through hole 705 and is tightened in the threaded hole.

[0125] In one embodiment, the rotating component 8 and the drive motor bracket 11 are engaged by a limiting structure, which is used to limit the rotation angle of the rotating component 8.

[0126] In this embodiment, by setting a limiting structure to restrict the rotation angle of the rotating component 8, it can be ensured that the air guide plate 4 can only switch between the open position and the closed position.

[0127] In one embodiment, the limiting structure includes a limiting groove 803 and a limiting rib. The limiting groove 803 is provided in one of the rotating member 8 and the drive motor bracket 11, and the limiting rib is provided in the other of the rotating member 8 and the drive motor bracket 11. The limiting rib is adapted to move along the limiting groove 803.

[0128] In this embodiment, the limiting rib and the limiting groove 803 cooperate to limit the rotation angle of the rotating part 8, which can ensure that the air guide plate 4 can only switch between the open position and the closed position.

[0129] In one specific embodiment, when the limiting rib is located at one end of the limiting groove 803, the plate 401 is parallel to the axis of the main air duct 101, and when the limiting rib is located at the other end of the limiting groove 803, the air guide plate 4 is in the closed position.

[0130] In one specific embodiment, the limiting rib is provided on the drive motor bracket 11, and the limiting groove 803 is provided on the rotating member 8.

[0131] In one embodiment not shown in the figure, the limiting rib can be provided on the rotating member 8, and the limiting groove 803 can be provided on the drive motor bracket 11.

[0132] Specifically, such as Figure 14 As shown, the limiting groove 803 is an arc-shaped groove.

[0133] In one embodiment, the rotating member 8 is located between the drive motor bracket 11 and the first central connection portion 701. The first central connection portion 701 is provided with a first limiting portion 706, which restricts the rotating member 8 from moving axially.

[0134] In this embodiment, the first limiting part 706 restricts the rotation of the rotating member 8 along the axial direction, which can prevent the rotating member 8 from moving along the axial direction and causing the rotating shaft 402 of the air guide plate 4 to disengage from the first slot 703 on the first mounting bracket 7. This avoids the air guide plate 4 from disengaging from the limiting part of the first mounting bracket 7 and thus not being able to smoothly switch between the open and closed positions.

[0135] In one specific embodiment, the first limiting part 706 is annular, and the rotating member 8 is provided with an annular stepped surface 805, with the first limiting part 706 abutting against the annular stepped surface 805. In another specific embodiment, the first limiting part 706 is annular, and the rotating member 8 is provided with an annular stepped surface 805, with a certain gap between the first limiting part 706 and the annular stepped surface 805, to prevent the rotating member 8 from moving circumferentially and causing the rotating shaft 402 of the air guide plate 4 to disengage from the first slot 703 on the first mounting bracket 7, thereby preventing the air guide plate 4 from disengaging from the limiting position of the first mounting bracket 7 and thus avoiding the inability to smoothly switch between the open and closed positions.

[0136] In one embodiment, the first central connecting portion 701 is provided with a second limiting portion 707, which restricts the drive gear 10 from moving axially.

[0137] In this embodiment, by providing a second limiting part 707, the drive gear 10 can be prevented from moving axially.

[0138] In one embodiment, the head assembly further includes a housing 12, in which the main air duct 101, the air guide plate assembly, the drive assembly and the heating assembly 15 are all disposed, and the first mounting bracket 7 is connected to the housing 12.

[0139] In this embodiment, by setting the outer shell 12, the main air duct 101, the air guide plate assembly, the drive assembly and the heating assembly 15 are all located inside the outer shell 12, making the appearance more aesthetically pleasing. The first mounting bracket 7 is connected to the outer shell 12, which can fix the first mounting bracket 7 inside the outer shell 12. During assembly, the air guide plate assembly is first assembled into a whole, and then the first mounting bracket 7 in the air guide plate assembly is installed into the outer shell 12 to realize the assembly of the air guide plate assembly into the outer shell 12.

[0140] In one embodiment, the air duct assembly includes an air duct structure 1, which includes a first annular wall panel 102, a first connecting wall panel 103, and a second annular wall panel 104. The inner side of the first annular wall panel 102 forms a main air duct 101. The first connecting wall panel 103 connects the first annular wall panel 102 and the second annular wall panel 104. The gap between the second annular wall panel 104 and the first annular connecting portion 702 forms an annular air duct 3. The inner side of the first annular connecting portion 702 forms a central air duct 2. In an alternative embodiment, the central air duct 2 and the annular air duct 3 are formed within the housing 12. In this embodiment, the structure of the first mounting bracket 7 is as follows: Figure 15 As shown. In another alternative embodiment, as Figure 16As shown, the first mounting bracket 7 also includes an annular connecting plate 708 surrounding the outside of the first annular connecting portion 702. The gap between the annular connecting plate 708 and the first annular connecting portion 702 forms an annular air duct 3, and the inner side of the first annular connecting portion 702 forms a central air duct 2.

[0141] In one specific embodiment, the first annular connecting part 702 includes an annular rib 7021 and an annular plate 7022, the gap between the second annular wall plate 104 and the annular plate 7022 forms an annular air duct 3, and the inner side of the annular plate 7022 forms a central air duct 2.

[0142] In one embodiment, the heating component 15 is detachably connected to the first annular connecting portion 702.

[0143] In this embodiment, the heating component 15 is detachably connected to the first annular connecting part 702, which facilitates the installation of the heating component 15.

[0144] In one specific embodiment, the heating component 15 includes a heating element support 1501, such as... Figure 3 , Figure 4 and Figure 7 As shown, the heating element support 1501 is provided with a first engaging part 15012, and the first annular connecting part 702 includes an annular rib 7021 and an annular plate 7022. The annular plate 7022 is provided with a second engaging part 709, and the first engaging part 15012 is engaged with the second engaging part 709.

[0145] In an alternative embodiment, the heating element 15 is connected to the air duct structure 1. Specifically, the heating element 15 can be connected to the second annular wall panel 104 of the air duct structure 1 via a snap-fit ​​connection.

[0146] In another alternative embodiment, the heating element 15 is connected to the housing 12. Specifically, when the central air duct 2 and the annular air duct 3 are formed inside the housing 12, the heating element 15 can be connected to the inner wall of the housing 12 by a snap-fit ​​connection.

[0147] In one embodiment, the outer casing 12 includes a cylindrical casing 1202, a second central connecting portion 1203, and a second annular connecting portion 1201, wherein the second annular connecting portion 1201 is correspondingly connected to the first annular connecting portion 702.

[0148] In this embodiment, the second annular connecting part 1201 is connected to the first annular connecting part 702, which can stably connect the first mounting bracket 7 to the outer shell 12.

[0149] In one embodiment, the air guide plate assembly further includes a drive motor bracket 11, and the drive assembly includes a drive motor 9, which is disposed between the drive motor bracket 11 and the second center connection portion 1203.

[0150] In this embodiment, the drive motor 9 is disposed between the drive motor bracket 11 and the second central connection portion 1203, which can ensure effective fixation of the drive motor 9.

[0151] In one embodiment, the first annular connecting portion 702 is provided with a plurality of first slots 703 along the circumferential direction, and the second annular connecting portion 1201 is provided with a plurality of second slots 12011 along the circumferential direction. The second slots 12011 are arranged opposite to and correspond one-to-one with the first slots 703 of the first annular connecting portion 702. The air guide plate 4 is provided with a rotating shaft 402 at one end near the first annular connecting portion 702. The rotating shaft 402 is limited between the first slots 703 and the second slots 12011.

[0152] In this embodiment, by providing a second slot 12011 in the second annular connecting part 1201, when the first annular connecting part 702 is connected to the second annular connecting part 1201, the rotating shaft 402 at one end of the plate 401 is limited between the first slot 703 of the first annular connecting part 702 and the second slot 12011 of the second annular connecting part 1201. This can prevent the air guide plate 4 from falling off the first mounting bracket 7 and can also effectively prevent the rotating shaft 402 of the air guide plate 4 from moving up, down, left, and right significantly when rotating.

[0153] In one embodiment, the head assembly further includes an annular grille 18, which is connected to the housing 12 or integrally formed with the housing 12, and is disposed opposite to the annular air duct 3; and / or, the head assembly further includes a first grille 13, which is connected to the housing 12 and is opposite to the central air duct 2; and / or, the head assembly further includes a second grille 14, which is disposed at one end of the main air duct 101 away from the central air duct 2, or the second grille 14 is disposed at one end of the housing 12 away from the central air duct 2.

[0154] In this embodiment, by providing an annular grille 18, the heating element 15 located within the annular air duct 3 can be shielded, resulting in a more aesthetically pleasing appearance. This also prevents users from accidentally inserting their hands into the annular air duct 3, which could lead to burns or electric shocks. By providing the first grille 13, the central air duct 2 and its internal air guide plate assembly can be partially shielded, ensuring safe operation. By providing the second grille 14, the overall appearance of the unit assembly is improved, and safe operation is also ensured.

[0155] like Figure 5 As shown, the annular grille 18 has multiple grille holes that allow airflow to pass through.

[0156] In one specific embodiment, the annular grille 18 is integrally formed with the cylindrical shell 1202 or is separately disposed therefrom, and the second annular connecting part 1201 is disposed on the inner circumferential side of the annular grille 18.

[0157] In one specific embodiment, the outer casing 12 further includes a second central connecting portion 1203, which is connected to the second annular connecting portion 1201 by a plurality of second connecting ribs 1204.

[0158] Specifically, the end of the second connecting rib 1204 or the second annular connecting part 1201 is provided with a first screw post 1205, and the end of the first connecting rib 704 or the first annular connecting part 702 is provided with a first screw hole 710. The screw passes through the first screw hole 710 and is tightened in the first screw post 1205 to fix the first mounting bracket 7 to the outer shell 12.

[0159] In one embodiment, the main air duct 101 is provided with a fan blade 5 and a main motor 6 that can drive the fan blade 5 to rotate. The main motor 6 has a first working state of rotating in a first direction and a second working state of rotating in a second direction. When the main motor 6 is in the first working state, the drive component controls the air guide plate 4 to switch to the open position, and the airflow enters the main air duct 101 through the central air duct 2 and the annular air duct 3 and is then blown out. When the main motor 6 is in the second working state, the drive component controls the air guide plate 4 to switch to the closed position, and the airflow enters the annular air duct 3 through the main air duct 101 and is then blown out.

[0160] In this embodiment, in cold air mode, the heating element 15 is not working, the main motor 6 is in the first working state, and the drive component controls the air guide plate 4 to switch to the open position. The airflow enters the main air duct 101 through the central air duct 2 and the annular air duct 3 and is then blown out, ensuring that the cold air is strong enough and has a large air volume. In warm air mode, the heating element 15 is working, and the drive component controls the air guide plate 4 to switch to the closed position. After the airflow enters the main air duct 101, it flows from the main air duct 101 to the annular air duct 3, is heated by the heating element 15, and is then blown out. This avoids loss when the hot air is delivered and reduces heat loss during heating. Furthermore, the heating element 15 is located in the annular air duct 3, and the air-gathering effect of the annular air duct 3 ensures that the airflow flows evenly over the heating element 15, achieving the optimal heating effect.

[0161] According to an embodiment of the present invention, another aspect provides an air outlet device, including the head assembly provided in the above embodiments.

[0162] When the heating mode is turned on, the working airflow of the heating element 15 enters the main air duct 101 and flows from the main air duct 101 to the annular air duct 3. After being heated by the heating element 15, it is blown out, which can avoid the loss of hot air when it is delivered and reduce the loss of heat during heating. Furthermore, the heating element 15 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 15, which can achieve the optimal heating effect.

[0163] In one embodiment, the air outlet device is a fan or a heater.

[0164] 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 (101) and an annular air duct (3), wherein the annular air duct (3) is disposed at one end of the main air duct (101); A heating element (15) is disposed in the annular air duct (3); The head assembly has a warm air mode. In the warm air mode, the airflow enters the annular air duct (3) through the main air duct (101) and is then blown out.

2. The head assembly according to claim 1, characterized in that, The heating component (15) includes a heating element, which includes at least two coils of heating wire (1502) radially spaced along the annular air duct (3).

3. The head assembly according to claim 1, characterized in that, The heating component (15) includes a heating element, and the heating component (15) further includes a first heat insulation structure (1504), the first heat insulation structure (1504) is disposed on the outer periphery of the heating element and spaced apart from the heating element; And / or, the heating component (15) further includes a second heat insulation structure (1505), which is disposed on the inner periphery of the heating element and spaced apart from the heating element.

4. The head assembly according to claim 3, characterized in that, The heating component (15) includes a heating element support (1501) and a heat insulation structure support (1503). Multiple heat insulation structure supports (1503) are provided at intervals along the circumference of the heating element support (1501). The heat insulation structure supports (1503) are connected to the heating element support (1501). The heating element and the first heat insulation structure (1504) are provided on the heat insulation structure support (1503); or, the heating element and the second heat insulation structure (1505) are provided on the heat insulation structure support (1503); or, the heating element, the first heat insulation structure (1504), and the second heat insulation structure (1505) are provided on the heat insulation structure support (1503).

5. The head assembly according to claim 4, characterized in that, The heating element support (1501) is provided with a first insertion mating part, and the heat insulation structure support (1503) is inserted into the first insertion mating part.

6. The head assembly according to claim 4, characterized in that, The heat insulation structure bracket (1503) is provided with a support part (15031) for supporting and limiting the heating element. And / or, the heat insulation structure bracket (1503) is provided with a second insertion mating part that is inserted into the first heat insulation structure (1504); And / or, the heat insulation structure bracket (1503) is provided with a third insertion mating part that is inserted into the second heat insulation structure (1505).

7. The head assembly according to claim 6, characterized in that, The second insertion mating part is a groove (15032), and the first heat insulation structure (1504) is provided with a slot (15041). The slot (15041) is adapted to move along the depth direction of the groove (15032) so that the slot (15041) is engaged on both sides of the heat insulation structure bracket (1503), and at least part of the first heat insulation structure (1504) is engaged in the groove (15032).

8. The head assembly according to claim 6, characterized in that, The third insertion mating part includes one of a hook (15033) and a hole (15051), and the second heat insulation structure (1505) is provided with the other of a hook (15033) and a hole (15051), wherein the hook (15033) and the hole (15051) are inserted into each other.

9. The head assembly according to claim 6, characterized in that, The heating element (15) is provided with at least one thermostat (16), which is mounted between two adjacent heat insulation structure supports (1503) and is close to the surface of the heating element. And / or, the heating component (15) is provided with an overcurrent protector (17). And / or, the heating assembly (15) further includes at least one binding member (1506) which is bound to the heating element support (1501), the first heat insulation structure (1504), the second heat insulation structure (1505) and the outside of the heating element.

10. The head assembly according to any one of claims 1 to 9, characterized in that, The air duct assembly further includes a central air duct (2), and the annular air duct (3) is disposed on the outer periphery of the central air duct (2). The head assembly further includes: The air guide plate assembly includes a plurality of air guide plates (4), the plurality of air guide plates (4) having a closed position for closing the central air duct (2) and an open position for opening the central air duct (2); A drive assembly is connected to a plurality of the air guide plates (4) and is capable of driving the air guide plates (4) to switch between the closed position and the open position. In the warm air mode, the drive assembly drives the air guide plates (4) to switch to the closed position. The head assembly also has a cold air mode, in which the drive assembly drives the air guide plate (4) to switch to the open position.

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

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

13. The head assembly according to claim 11, characterized in that, The first central connecting part (701) and / or the first annular connecting part (702) are provided with a plurality of first slots (703) in the circumferential direction. The air guide plate (4) includes a rotating shaft (402) located at at least one end of the plate body (401), and the rotating shaft (402) is disposed in the first slot (703).

14. The head assembly according to claim 11, characterized in that, The air guide plate (4) also includes a rocker arm (403), and the driving component includes a rotating component (8). The rotating component (8) is provided with a plurality of actuating grooves (801) spaced apart along the circumference. The rocker arm (403) is located in the actuating grooves (801). When the rotating component (8) rotates, it drives the rocker arm (403) to move, thereby driving the air guide plate (4) to rotate.

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

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

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

18. The head assembly according to claim 16, characterized in that, The rotating component (8) and the drive motor bracket (11) cooperate through a limiting structure, which is used to limit the rotation angle of the rotating component (8).

19. The head assembly according to claim 16, characterized in that, The rotating component (8) is located between the drive motor bracket (11) and the first central connecting part (701). The first central connecting part (701) is provided with a first limiting part (706), which restricts the rotating component (8) from moving axially.

20. The head assembly according to claim 15, characterized in that, The first central connecting part (701) is provided with a second limiting part (707), which restricts the drive gear (10) from moving axially.

21. The nose assembly according to any one of claims 11 to 20, characterized in that, The head assembly also includes a housing (12), the main air duct (101), the air guide plate assembly, the drive assembly and the heating assembly (15) are all located inside the housing (12), and the first mounting bracket (7) is connected to the housing (12).

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

23. The head assembly according to claim 22, characterized in that, The heating component (15) is detachably connected to the first annular connecting part (702); Alternatively, the heating component (15) is connected to the air duct structure (1); Alternatively, the heating component (15) is connected to the housing (12).

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

25. The head assembly according to claim 24, characterized in that, The air guide plate assembly also includes a drive motor bracket (11), and the drive assembly includes a drive motor (9), which is disposed between the drive motor bracket (11) and the second central connection part (1203).

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

27. The head assembly according to claim 21, characterized in that, The head assembly also includes an annular grille (18), which is connected to the outer shell (12) or the annular grille (18) is integrally formed with the outer shell (12), and the annular grille (18) is disposed opposite to the annular air duct (3); And / or, the head assembly further includes a first grille (13) connected to the housing (12) and opposite to the central air duct (2); And / or, the head assembly further includes a second grille (14) located at one end of the main air duct (101) away from the central air duct (2), or the second grille (14) located at one end of the housing (12) away from the central air duct (2).

28. An air outlet device, characterized in that, include: The nose assembly according to any one of claims 1 to 27.

29. The air outlet device according to claim 28, characterized in that, The air outlet device is a fan or a heater.

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