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 fan blade assembly is arranged in the air duct structure and comprises fan blades and a main motor capable of driving the fan blades to rotate, the fan blade assembly has a first working state and a second working state, in the first working state, the fan blades drive airflow to flow from the first end of the air duct structure to the second end of the air duct structure, and in the second working state, the fan blades drive the airflow to flow from the second end of the air duct structure. The fan blades drive airflow to flow from the second end to the first end of the air duct structure; the heating assembly is arranged on the air duct structure; the air gathering grating is arranged at the first end of the air duct structure; the air expanding grille is arranged at the second end of the air duct structure; the machine head assembly has a cold air mode and a warm air mode, in the cold air mode, the fan blade assembly is in the second working state, and in the warm air mode, the fan blade assembly is in the first working state.

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] Traditional fans are only suitable for cooling in the summer and remain idle in the winter, resulting in low usage throughout the year. To improve fan utilization, some technologies offer dual-function fans that can both cool and heat, placing the heating element at the air inlet or outlet. Switching between hot and cold air is achieved by controlling the on / off state of the heating element. In practical use, however, it is usually necessary for cold air to travel a long distance and for hot air to diffuse quickly, which these current fan technologies cannot meet. 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 that fans in related technologies cannot meet the requirements of long-distance transmission of cold air energy and rapid diffusion of hot air energy.

[0004] In a first aspect, the present invention provides a nose assembly, comprising: Air duct structure; A fan blade assembly, disposed within the air duct structure, includes a fan blade and a main motor capable of driving the fan blade to rotate. The fan blade assembly has a first working state and a second working state. In the first working state, the fan blade drives the airflow from the first end of the air duct structure to the second end of the air duct structure. In the second working state, the fan blade drives the airflow from the second end of the air duct structure to the first end of the air duct structure. The heating element is located in the air duct structure; A wind-gathering grille is located at the first end of the air duct structure; An air-expanding grille is located at the second end of the air duct structure; The head assembly has a cold air mode and a warm air mode. In the cold air mode, the fan blade assembly is in a second working state, and in the warm air mode, the fan blade assembly is in a first working state.

[0005] Beneficial effects: In cold air mode, the heating element is not working, and the fan assembly is in its second working state. At this time, the airflow is driven through the air-expanding grille and into the air duct structure. After passing through the air duct structure, it passes through the air-concentrating grille and is blown outwards. By setting up the air-concentrating grille, the airflow can be concentrated, resulting in a long air delivery distance. In warm air mode, the heating element is working, and the fan assembly is in its first working state. At this time, the airflow is driven through the air-concentrating grille and into the air duct structure. After passing through the air duct structure, it passes through the air-expanding grille and is blown outwards. The airflow is concentrated into diffused air after passing through the air-expanding grille, resulting in a large diffusion range and rapid diffusion, suitable for even heating in winter and preventing excessive heat concentration.

[0006] In one optional embodiment, the wind-gathering grille includes a plurality of grille bars spaced apart and evenly distributed along the circumference, wherein the rotation direction of the grille bars of the wind-gathering grille is opposite to the rotation direction of the wind blades; And / or, the air-expanding grille includes a plurality of grille bars spaced apart and evenly distributed along the circumference, and in the warm air mode, the rotation direction of the grille bars of the air-expanding grille is the same as the rotation direction of the fan blades; And / or, the air-expanding grille includes a plurality of evenly distributed air guide holes.

[0007] In one optional embodiment, the wind-gathering grille includes an air guide channel parallel to the axial direction of the air duct structure, the length of the air guide channel being h, where h ≥ 5 mm.

[0008] Beneficial effects: The air-gathering grille includes an air guide channel that is parallel to the axial direction of the air duct structure. The length of the air guide channel is greater than or equal to 5mm, which can rectify the airflow into a direct airflow and deliver air over a long distance.

[0009] In one optional embodiment, the wind-gathering grille includes a plurality of grille bars spaced apart and evenly distributed along the circumference, and the space between two adjacent grille bars forms an air guide channel; the wind-expanding grille includes a plurality of evenly distributed air guide holes, the length of which is less than the length of the air guide channel.

[0010] Beneficial effects: Because the wind-gathering grille comprises circumferentially spaced and evenly distributed grille bars, with the space between adjacent grille bars forming an air-guiding channel, the wind-gathering grille has a simple structure and ensures that airflow can enter each air-guiding channel, concentrating and directly blowing the airflow. The air-expanding grille comprises multiple evenly distributed air-guiding holes. When airflow flows out through the air-expanding grille, it can evenly distribute the airflow into each air-guiding hole. The length of the air-guiding hole is shorter than the length of the air-guiding channel. Because the airflow is shorter, it still diffuses out, resulting in a larger diffusion range.

[0011] In one optional implementation, the main motor is capable of rotating in a first direction or a second direction. When the fan blade assembly is in the first working state, the main motor rotates in the first direction, and when the fan blade assembly is in the second working state, the main motor rotates in the second direction, wherein the first direction is opposite to the second direction.

[0012] Beneficial effects: In cold air mode, the heating element is not working, and the fan assembly is in its second working state. The main motor rotates in the second direction, driving the airflow through the air-expanding grille and into the air duct structure. After passing through the air duct structure, it passes through the air-concentrating grille and is blown outward. The air-concentrating grille can concentrate the airflow, resulting in a long air delivery distance. In warm air mode, the fan assembly is in its first working state, and the main motor rotates in the first direction. This drives the airflow through the air-concentrating grille and into the air duct structure. After passing through the air duct structure, it passes through the air-expanding grille and is blown outward. The airflow is consolidated into diffused air by the air-expanding grille, resulting in a large diffusion range and rapid diffusion, suitable for even heating in winter and preventing excessive heat concentration.

[0013] In one alternative implementation, the tilt angle of the fan blades can be adjusted to allow the fan blade assembly to have the first operating state and the second operating state.

[0014] Beneficial effects: The tilt angle of the fan blades can be adjusted to allow the fan blade assembly to have a first working state and a second working state. The airflow direction can be changed simply by adjusting the tilt angle of the fan blades. The main motor only needs to rotate in one direction, which reduces the requirements for the main motor and saves costs.

[0015] In one optional embodiment, the main motor is rotatably disposed within the air duct structure and has a first position that brings the fan blades close to a first end of the air duct structure and a second position that brings the fan blades close to a second end of the air duct structure. When the fan blade assembly is in the second working state, the main motor is in the first position, and when the fan blade assembly is in the first working state, the main motor is in the second position.

[0016] Beneficial effects: In cold air mode, the heating element is not working. The fan blades are near the first end of the air duct structure, and the main motor drives the fan blades to rotate. This drives the airflow through the air diffuser and into the air duct structure. After passing through the air duct structure, it passes through the air concentrator and is blown outwards. By setting up the air concentrator, the airflow can be concentrated, resulting in a long air delivery distance. In warm air mode, the heating element is working, and the fan blades are near the second end of the air duct structure. The main motor drives the fan blades to rotate, driving the airflow through the air concentrator and into the air duct structure. After passing through the air duct structure, it passes through the air diffuser and is blown outwards. The airflow is concentrated into diffused air after passing through the air diffuser, resulting in a large diffusion range and rapid diffusion, suitable for even heating in winter and preventing excessive heat concentration.

[0017] In one alternative implementation, the heating element is positioned close to the air vent.

[0018] Beneficial effects: In warm air mode, the heating element is working and the fan blade assembly is in its first working state. At this time, the airflow is driven through the air-gathering grille and into the air duct structure. After flowing through the air duct structure, it is heated by the heating element and then blown to the outside through the air-expanding grille. Because the heating element is set close to the air-expanding grille, the heating element is close to the air outlet side, which can avoid heat loss and increase the temperature of the hot air on the air outlet side.

[0019] In one alternative embodiment, the heating component includes a heating bracket and a heating element, the heating element being distributed circumferentially and radially along the heating bracket.

[0020] Beneficial effects: Because the heating element is distributed along the circumference and radial direction of the heating support, the heating component is flat and has a large area, which can quickly heat the airflow, improve heating efficiency, and enable the temperature to rise rapidly and evenly.

[0021] In one optional embodiment, the heating element is provided with a safety temperature limiting device, which is located on the main circuit that supplies power to the head assembly or on the circuit that supplies power to the heating element.

[0022] Beneficial effects: The heating element is equipped with a safety temperature limiting device, which is located on the main circuit that supplies power to the head assembly or on the circuit that supplies power to the heating element. When the temperature of the heating element is too high, the safety limiting device will cut off the main circuit that supplies power to the head assembly or the circuit that supplies power to the heating element to prevent safety problems.

[0023] In one optional embodiment, the air duct structure includes a main air duct, an annular air duct, and a central air duct. The annular air duct and the central air duct are located at the same end of the main air duct. The annular air duct is located on the outer periphery of the central air duct. The heating component is located in the annular air duct. The projection of the air expansion grille along the airflow direction at least partially overlaps with the projection of the annular air duct along the airflow direction. The head assembly also includes an air guide plate assembly, which includes multiple air guide plates. The multiple air guide plates have an open position for opening the central air duct and a closed position for closing the central air duct. In the cold air mode, the air guide plates are in the open position, and in the warm air mode, the air guide plates are in the closed position.

[0024] Beneficial effects: In cold air mode, the heating element is not working, the air guide plate is in the open position, and the fan assembly is in its second working state. At this time, the airflow is driven through the annular and central air ducts and then into the main air duct. After flowing through the main air duct, it passes through the air-gathering grille and is blown outwards. This consolidates the airflow into a concentrated airflow, resulting in a long delivery distance and ensuring sufficient cold air volume. In warm air mode, the heating element is working, the air guide plate is in the closed position, and the fan assembly is in its first working state. At this time, the airflow is driven through the air-gathering grille and into the main air duct, then into the annular air duct. After being heated by the heating element inside the annular air duct, it passes through the air-expanding grille and is blown outwards. The airflow is consolidated into a diffused airflow after passing through the air-expanding grille, resulting in a large diffusion range and rapid diffusion, suitable for even heating in winter and preventing excessive heat concentration.

[0025] In one optional embodiment, the air-expanding grille includes an annular grille and a protective grille, wherein the projection of the annular grille along the airflow direction overlaps with the projection of the annular air duct along the airflow direction, and the protective grille is disposed opposite to the central air duct.

[0026] In one optional embodiment, the head assembly includes a control module and an operation interface. The control module is electrically connected to at least the main motor and the heating component, and the control module and the operation interface are arranged opposite to each other.

[0027] Beneficial effects: The control module is electrically connected to at least the main motor and the heating element. The control module is positioned opposite the operation interface. Users can operate the control module through the operation interface, thereby controlling the machine head assembly to work in different modes.

[0028] In one alternative embodiment, the head assembly includes a housing that surrounds the air duct structure, the control module is located outside the air duct structure, and the user interface is located on the housing.

[0029] Beneficial effect: The housing design makes the head unit more aesthetically pleasing.

[0030] In one optional embodiment, a decorative cover is connected to the center of the wind-gathering grille and / or the wind-expanding grille, and the operation interface is located on the decorative cover.

[0031] Beneficial effect: The decorative cover makes the head unit more aesthetically pleasing.

[0032] In one optional embodiment, the head assembly further includes a micro switch, which is located on the main circuit supplying power to the head assembly or on the circuit supplying power to the heating element. The air-gathering grille is linked to the micro switch, and / or the air-expanding grille is linked to the micro switch. After the air-gathering grille and / or the air-expanding grille are assembled in place, the micro switch is closed. After the air-gathering grille and / or the air-expanding grille are disassembled, the micro switch is open.

[0033] Beneficial effects: The air-concentrating grille is linked with the micro switch, and / or the air-expanding grille is linked with the micro switch. After the air-concentrating grille and / or the air-expanding grille are installed in place, the micro switch closes, which can supply power to the head unit or the heating unit normally. When the air-concentrating grille and / or the air-expanding grille are removed, the micro switch opens, which can prevent the head unit or the heating unit from still working after the air-concentrating grille and / or the air-expanding grille are removed, thus avoiding the danger of the head unit or the heating unit still working.

[0034] In one optional embodiment, the head assembly includes a button, which is disposed opposite to the spring arm of the micro switch. After the air-gathering grille and / or the air-expanding grille are assembled in place, the air-gathering grille and / or the air-expanding grille press against the button to close the micro switch.

[0035] Beneficial effects: When the air-gathering grille and / or air-expanding grille are installed in place, the air-gathering grille and / or air-expanding grille press against the button, and the button presses the spring arm of the micro switch, thereby closing the micro switch. When the air-gathering grille and / or air-expanding grille are removed, the button is no longer pressed, and the micro switch is opened.

[0036] In one alternative implementation, the head assembly is provided with a dustproof structure.

[0037] Beneficial effect: By setting a dustproof structure on the outside of the connector assembly, dust can be prevented from falling onto the head assembly.

[0038] In one alternative implementation, the air-gathering grille and / or the air-expanding grille are connected to a humidification module.

[0039] Beneficial effects: By connecting the humidification module to the air-gathering grille and / or air-expanding grille, the heating element and the humidification module can work simultaneously in the warm air mode. While the warm air is blown out from the air-expanding grille, the water vapor generated by the humidification module is also blown towards the user, avoiding the air from drying out due to the warm air blowing, which can improve the user experience.

[0040] Secondly, the present invention also provides an air outlet device, comprising: body; The aforementioned head assembly is disposed on the fuselage.

[0041] Beneficial effects: In cold air mode, the heating element is not working, and the fan assembly is in its second working state. At this time, the airflow is driven through the diffuser grille and into the main air duct. After flowing through the main air duct, it passes through the concentrator grille and is blown outwards. By setting up the concentrator grille, the airflow can be concentrated, resulting in a long delivery distance. In warm air mode, the heating element is working, and the fan assembly is in its first working state. At this time, the airflow is driven through the concentrator grille and into the main air duct. After flowing through the main air duct, it passes through the diffuser grille and is blown outwards. The airflow is concentrated into diffused air after passing through the diffuser grille, resulting in a large diffusion range and rapid diffusion, suitable for uniform heating in winter and preventing excessive heat concentration.

[0042] In one alternative implementation, the height of the fuselage is adjustable.

[0043] Beneficial benefits: The height of the device is adjustable, which can meet the drying needs of users of different heights.

[0044] In one alternative embodiment, the air outlet device is provided with an oscillating structure, which enables the head assembly to oscillate left and right and / or up and down.

[0045] Beneficial effects: By setting up an oscillating structure, the air supply range can be expanded. In the cold air mode, the oscillating structure can direct the air-gathering grille toward the user, and in the warm air mode, it can direct the air-expanding grille toward the user, so that both cold and warm air can be blown toward the user.

[0046] In one alternative implementation, during the cold air mode, the oscillating structure directs the air-gathering grille toward the user; and / or, during the warm air mode, the oscillating structure directs the air-expanding grille toward the user.

[0047] In one alternative implementation, the air outlet device is a fan or a heater. Attached Figure Description

[0048] 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.

[0049] Figure 1 This is a schematic diagram of an air outlet device according to an embodiment of the present invention; Figure 2 for Figure 1 The exploded view of the air outlet equipment shown; Figure 3 for Figure 1 The diagram shows a cross-sectional view of the air outlet equipment. Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of a wind-gathering grille; Figure 6 A schematic diagram of the wind-gathering grille after the central structure has been removed; Figure 7 for Figure 6 Enlarged view of point B in the middle; Figure 8 This is a schematic diagram of an air vent grille; Figure 9 This is a schematic diagram of the heating element; Figure 10 This is a cross-sectional view of the wind turbine blades; Figure 11 This is a schematic diagram of the hub of a wind turbine blade; Figure 12 This is a schematic diagram of a wind turbine blade; Figure 13 This is a cross-sectional view of a head assembly according to an embodiment of the present invention when the air guide plate is in the open position; Figure 14 This is a cross-sectional view of a head assembly according to an embodiment of the present invention when the air guide plate is in the closed position; Figure 15 This is a cross-sectional view of the air guide plate assembly; Figure 16 This is an exploded view of the air guide plate assembly; Figure 17 This is a schematic diagram of a first mounting bracket in one embodiment; Figure 18 This is a schematic diagram of the rotating component; Figure 19 A schematic diagram of a first mounting bracket in another embodiment; Figure 20 This is a schematic diagram of the casing in another embodiment; Figure 21 This is a cross-sectional view of the wind turbine blades.

[0050] Explanation of reference numerals in the attached figures: 1. Air duct structure; 101. Main air duct; 102. Central air duct; 103. Annular air duct; 2. Fan blade; 201. Hub; 2011. Fan blade shaft hole; 2012. Limiting hole; 202. Blade; 2021. Central shaft; 2022. Limiting shaft; 3. Main motor; 4. Heating element; 401. Heating bracket; 402. Heating element; 5. Air concentrator grille; 501. Air guide channel; 502. Grille bar; 6. Air diffuser grille; 601. Air guide hole; 602. Annular grille; 60 3. Protective grille; 701. First drive motor; 702. First driving gear; 703. First driven gear; 704. Motor gear; 8. Safety temperature limiting device; 9. Control module; 10. Operation interface; 11. Outer shell; 1101. Upper shell; 1102. Lower shell; 1103. Cylindrical shell; 1104. Second central connecting part; 1105. Second annular connecting part; 1106. Second slot; 1107. Second connecting rib; 1108. First screw post; 12. 15. Decorative cover; 13. Micro switch; 14. Button; 15. Air guide plate; 1501. Plate body; 1502. Rotating shaft; 1503. Rocker arm; 17. First mounting bracket; 1701. First central connecting part; 1702. First annular connecting part; 1703. First connecting rib; 1704. First slot; 1705. First screw through hole; 1706. First limiting part; 1707. Second limiting part; 1708. First annular wall panel; 1709. Second annular wall panel; 1710. 18. Second screw through hole; 19. Rotating component; 10. Actuating groove; 11. Engaging part; 12. Mounting through hole; 13. Limiting groove; 14. Annular stepped surface; 15. Second drive motor; 26. Second drive gear; 27. Drive motor bracket; 28. Mounting shaft; 28. Chassis; 29. ​​Telescopic tube; 20. Upper tube; 21. Middle tube; 22. Lower tube; 23. Semi-annular support structure; 24. Left and right oscillating motor; 25. Up and down oscillating structure. Detailed Implementation

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] The following is combined Figures 1 to 21 The following describes embodiments of the present invention.

[0056] According to an embodiment of the present invention, in one aspect, a head assembly is provided, including an air duct structure 1, a fan blade assembly, a heating assembly 4, an air concentrator grille 5, and an air diffuser grille 6.

[0057] The fan assembly includes a fan blade 2 and a main motor 3 that drives the fan blade 2 to rotate. The fan assembly has a first working state and a second working state. In the first working state, the fan blade 2 drives the airflow from the first end of the air duct structure 1 to the second end of the air duct structure 1. In the second working state, the fan blade 2 drives the airflow from the second end of the air duct structure 1 to the first end of the air duct structure 1. The heating element 4 is located inside the air duct structure 1 or at one end of the air duct structure 1. The air-gathering grille 5 is located at the first end of the air duct structure 1. The air-expanding grille 6 is located at the second end of the air duct structure 1. The head assembly has a cold air mode and a warm air mode. In the cold air mode, the fan assembly is in the second working state, and in the warm air mode, the fan assembly is in the first working state.

[0058] In this embodiment, during the cold air mode, the air-gathering grille 5 faces the user, the heating element 4 is not working, and the fan assembly is in its second working state. At this time, the airflow passes through the air-expanding grille 6 and enters the air duct structure 1. After flowing through the air duct structure 1, it passes through the air-gathering grille 5 and is blown outwards. By setting the air-gathering grille 5, the airflow can be integrated into a concentrated airflow, resulting in a long delivery distance. During the warm air mode, the air-expanding grille 6 faces the user, the heating element 4 is working, and the fan assembly is in its first working state. At this time, the airflow passes through the air-gathering grille 5 and enters the air duct structure 1. After flowing through the air duct structure 1, it passes through the air-expanding grille 6 and is blown outwards. The airflow, after passing through the air-expanding grille 6, is integrated into a diffused airflow with a large diffusion range and rapid diffusion, suitable for uniform heating in winter to prevent excessive heat concentration. Specifically, in summer, the cool air mode can be used to quickly circulate the air throughout the house. It can also be used in conjunction with air conditioning to quickly circulate the cool air blown out by the air conditioner throughout the house.

[0059] In one embodiment, the wind-concentrating grille 5 includes a plurality of grille bars 502 spaced apart and evenly distributed circumferentially, the rotation direction of the grille bars 502 of the wind-concentrating grille 5 being opposite to the rotation direction of the fan blade 2; and / or, the air-expanding grille 6 includes a plurality of grille bars 502 spaced apart and evenly distributed circumferentially, and in the warm air mode, the rotation direction of the grille bars 502 of the air-expanding grille 6 is the same as the rotation direction of the fan blade 2; and / or, the air-expanding grille 6 includes a plurality of evenly distributed air guide holes 601.

[0060] In this embodiment, the rotation direction of the grille bars 502 of the wind-gathering grille 5 is opposite to the rotation direction of the fan blade 2. When the cold airflow passes through the wind-gathering grille 5, the convergence angle increases, resulting in concentrated, high-speed airflow. In warm air mode, the rotation direction of the grille bars 502 of the air-expanding grille 6 is the same as the rotation direction of the fan blade 2. When the warm airflow passes through the air-expanding grille 6, the airflow velocity decreases, the diffusion angle increases, resulting in diffused, slow-flowing airflow. The air-expanding grille 6 includes multiple evenly distributed air guide holes 601. When the airflow flows out through the air-expanding grille 6, the air-expanding grille 6 can evenly distribute the airflow into each air guide hole 601, and the airflow is blown out in a diffused manner, resulting in a large diffusion range.

[0061] In one specific embodiment, in cold air mode, the rotation direction of the grille bars 502 of the wind-gathering grille 5 is opposite to the rotation direction of the fan blade 2; in warm air mode, the rotation direction of the grille bars 502 of the air-expanding grille 6 is the same as the rotation direction of the fan blade 2.

[0062] In one embodiment, the wind-gathering grille 5 includes an air guide channel 501 parallel to the axial direction of the air duct structure 1, such as... Figure 7 As shown, the length of the air guide channel 501 is h, where h ≥ 5 mm.

[0063] In this embodiment, the wind-gathering grille 5 includes an air guide channel 501 that is parallel to the axial direction of the air duct structure 1. The length of the air guide channel 501 is greater than or equal to 5mm, which can rectify the airflow into a direct airflow and deliver air over a long distance.

[0064] It should be noted that if the wind-gathering grille 5 is not installed, the airflow will be a wide-angle outward expansion after flowing out of the air duct structure 1, with no wind in the central area and the wind concentrated on the outer periphery of the fan blade 2. By installing the wind-gathering grille 5, the airflow is rectified through the air guide channel 501 into an airflow that is basically parallel to the axis of the fan blade 2, i.e., a direct blow, which can concentrate the airflow and blow it directly over a longer distance.

[0065] In one embodiment, the wind-gathering grille 5 includes a plurality of grille bars 502 that are spaced apart and evenly distributed along the circumference, and the space between two adjacent grille bars 502 forms an air-guiding channel 501; the wind-expanding grille 6 includes a plurality of evenly distributed air-guiding holes 601, and the length of the air-guiding holes 601 is less than the length of the air-guiding channel 501.

[0066] In this embodiment, the wind-gathering grille 5 includes circumferentially spaced and uniformly distributed grille bars 502, and the space between two adjacent grille bars 502 forms an air-guiding channel 501. The wind-gathering grille 5 has a simple structure and can ensure that airflow can enter each air-guiding channel 501, concentrating and blowing the airflow directly. The air-expanding grille 6 includes multiple uniformly distributed air-guiding holes 601. When airflow flows out through the air-expanding grille 6, the air-expanding grille 6 can evenly distribute the airflow into each air-guiding hole 601. The length of the air-guiding hole 601 is less than the length of the air-guiding channel 501. Because the length of the air-guiding hole 601 is smaller, the airflow is still blown out in a diffused manner, resulting in a larger diffusion range.

[0067] It should be noted that "multiple" means at least two, and "multiple grid strips 502" specifically refers to at least two grid strips 502.

[0068] In one specific embodiment, each grille bar 502 is parallel to the axial direction of the air duct structure 1.

[0069] In one specific embodiment, each grid bar 502 is bent.

[0070] It should be noted that the length of the air guide hole 601 refers to the maximum distance between the two ends of the air guide hole 601 along the airflow direction, and the length of the air guide channel 501 refers to the maximum distance between the two ends of the air guide channel 501 along the airflow direction.

[0071] In one embodiment, the main motor 3 can rotate in a first direction or a second direction. When the fan blade assembly is in the first working state, the main motor 3 rotates in the first direction. When the fan blade assembly is in the second working state, the main motor 3 rotates in the second direction. The first direction and the second direction are opposite.

[0072] In this embodiment, in cold air mode, the heating element 4 is not working, the fan assembly is in the second working state, and the main motor 3 rotates in the second direction. At this time, the airflow passes through the air-expanding grille 6 and enters the air duct structure 1. After flowing through the air duct structure 1, it passes through the air-concentrating grille 5 and is blown to the outside. The air-concentrating grille 5 can integrate the airflow into concentrated air, resulting in a long air delivery distance. In warm air mode, the fan assembly is in the first working state, and the main motor 3 rotates in the first direction. At this time, the airflow passes through the air-concentrating grille 5 and enters the air duct structure 1. After flowing through the air duct structure 1, it passes through the air-expanding grille 6 and is blown to the outside. The airflow is integrated into diffused air by the air-expanding grille 6, resulting in a large diffusion range and rapid diffusion, which is suitable for uniform heating in winter and preventing excessive heat concentration.

[0073] It should be noted that "rotating the main motor 3 in the second direction" can specifically mean that the main motor 3 rotates clockwise, and "rotating the main motor 3 in the first direction" can specifically mean that the main motor 3 rotates counterclockwise. Alternatively, "rotating the main motor 3 in the second direction" can specifically mean that the main motor 3 rotates counterclockwise, and "rotating the main motor 3 in the first direction" can specifically mean that the main motor 3 rotates clockwise.

[0074] In one embodiment, the tilt angle of the wind blade 2 is adjustable to allow the wind blade assembly to have a first operating state and a second operating state.

[0075] In this embodiment, the tilt angle of the fan blade 2 can be adjusted so that the fan blade assembly has a first working state and a second working state. The airflow direction can be changed simply by adjusting the tilt angle of the fan blade 2. The main motor 3 only needs to rotate in one direction, which reduces the requirements on the main motor 3 and saves costs.

[0076] It should be noted that the tilt angle of blade 2 is the angle between the line connecting the leading edge point of the blade root and the trailing edge point of the blade root and the plane perpendicular to the axis of blade 2.

[0077] Specifically, such as Figure 21 As shown, the tilt angle of blade 2 is α, where α is the acute angle between the line connecting the leading edge point and the trailing edge point of the blade root of blade 2 and the plane perpendicular to the axis of blade 2.

[0078] Specifically in one embodiment, such as Figure 10 As shown, the fan blade 2 includes a hub 201 and a plurality of blades 202 disposed on the outer periphery of the hub 201. The tilt angle of the blades 202 on the hub 201 can be adjusted.

[0079] Specifically, such as Figure 12 As shown, one end of the blade 202 is provided with a central shaft 2021, as... Figure 11As shown, the hub 201 is provided with a fan blade shaft hole 2011, and the central shaft 2021 is inserted into the fan blade shaft hole 2011 and can rotate. One end of the blade 202 is also provided with two limiting shafts 2022, which are located on both sides of the central shaft 2021. The hub 201 is provided with a limiting hole 2012, and the limiting shaft 2022 is movably disposed in the limiting hole 2012. The limiting hole 2012 is an arc-shaped hole with the center of the fan blade shaft hole 2011 as the center. When the blade 202 rotates to a certain angle, the limiting shaft 2022 engages with one end of the limiting hole 2012, and the blade 202 cannot continue to rotate, thus limiting the rotation angle of the blade 202.

[0080] More specifically, the wind turbine blade 2 adjusts its tilt angle via the first drive assembly, further referencing... Figure 10 The first drive assembly includes a first drive motor 701, a first drive gear 702, and a first driven gear 703. The first driven gear 703 is connected to the central shaft 2021. The first drive gear 702 and the first driven gear 703 are both bevel gears and mesh with each other. The first drive motor 701 can drive the first drive gear 702 to rotate, which in turn drives the first driven gear 703 to rotate, which in turn drives the blade 202 to rotate, thereby changing the tilt angle of the blade 202.

[0081] More specifically, the first drive motor 701 is connected to a motor gear 704, which meshes with the first drive gear 702.

[0082] Of course, in other alternative embodiments, two mounting slots can be provided on the hub 201 for each blade 202, and the tilt angles corresponding to the blades 202 being installed in different mounting slots are different.

[0083] In one embodiment, the main motor 3 is rotatably disposed within the air duct structure 1 and has a first position that brings the fan blade 2 close to a first end of the air duct structure 1 and a second position that brings the fan blade 2 close to a second end of the air duct structure 1. When the fan blade assembly is in the second working state, the main motor 3 is in the first position, and when the fan blade assembly is in the first working state, the main motor 3 is in the second position.

[0084] In this embodiment, during the cold air mode, the heating element 4 is not working. The fan blade 2 is close to the first end of the air duct structure 1. The main motor 3 drives the fan blade 2 to rotate, causing the airflow to pass through the air diffuser 6 and enter the air duct structure 1. After flowing through the air duct structure 1, it passes through the air concentrator 5 and is blown outward. By setting the air concentrator 5, the airflow can be integrated into concentrated air, resulting in a long air delivery distance. During the warm air mode, the heating element 4 is working. The fan blade 2 is close to the second end of the air duct structure 1. The main motor 3 drives the fan blade 2 to rotate, causing the airflow to pass through the air concentrator 5 and enter the air duct structure 1. After flowing through the air duct structure 1, it passes through the air diffuser 6 and is blown outward. The airflow is integrated into diffused air after passing through the air diffuser 6, resulting in a large diffusion range and rapid diffusion, suitable for uniform heating in winter to prevent excessive heat concentration.

[0085] In one specific embodiment, the main motor 3 is mounted on the main motor bracket, the main motor bracket is provided with a connecting shaft, the air duct structure 1 is provided with a shaft hole, the shaft hole extends radially along the air duct structure 1, and the connecting shaft is rotatably inserted through the shaft hole. The main motor 3 and the fan blade 2 can be rotated by driving the connecting shaft to rotate.

[0086] Specifically, the connecting shaft is connected to a second drive component, which can drive the connecting shaft to rotate.

[0087] In one embodiment, the heating component 4 is positioned close to the air vent 6.

[0088] In this embodiment, during the warm air mode, the heating element 4 is working and the fan blade assembly is in the first working state. At this time, the airflow is driven through the air-gathering grille 5 and into the air duct structure 1. After flowing through the air duct structure 1, it is heated by the heating element 4 and then blown to the outside through the air-expanding grille 6. Since the heating element 4 is set close to the air-expanding grille 6, the heating element 4 is close to the air outlet side, which can avoid heat loss and increase the temperature of the hot air on the air outlet side.

[0089] In one embodiment, the heating component 4 includes a heating bracket 401 and a heating element 402, the heating element 402 being distributed along the circumferential and radial directions of the heating bracket 401.

[0090] In this embodiment, since the heating element 402 is distributed along the circumference and radial direction of the heating support 401, the heating component 4 is flat and has a large area, which can quickly heat the airflow, improve heating efficiency, and enable the temperature to rise rapidly and evenly.

[0091] In one embodiment, such as Figure 9 As shown, the heating element 4 is equipped with a safety temperature limiting device 8, which is located on the main circuit that supplies power to the head assembly or on the circuit that supplies power to the heating element 4.

[0092] In this embodiment, the heating component 4 is equipped with a safety temperature limiting device 8. The safety temperature limiting device 8 is located on the main circuit that supplies power to the head assembly or on the circuit that supplies power to the heating component 4. When the temperature of the heating component 4 is too high, the safety temperature limiting device 8 will cut off the main circuit that supplies power to the head assembly or the circuit that supplies power to the heating component 4 to prevent safety problems from occurring.

[0093] In a preferred embodiment, the safety temperature limiting device 8 is positioned close to the heating element 402.

[0094] In one embodiment, the air duct structure 1 includes a main air duct 101, an annular air duct 103, and a central air duct 102. The annular air duct 103 and the central air duct 102 are located at the same end of the main air duct 101, and the annular air duct 103 is located on the outer periphery of the central air duct 102. The heating element 4 is located in the annular air duct 103. The projection of the air diffuser 6 along the airflow direction at least partially overlaps with the projection of the annular air duct 103 along the airflow direction. The head assembly also includes a guide vane assembly, which includes multiple guide vanes 15, such as... Figure 13 and Figure 14 Multiple air guide plates 15 have an open position for opening the central air duct 102 and a closed position for closing the central air duct 102. In cold air mode, the air guide plates 15 are in the open position, and in warm air mode, the air guide plates 15 are in the closed position.

[0095] In this embodiment, in the cold air mode, the heating element 4 is not working, the air guide plate 15 is in the open position, and the fan assembly is in the second working state. At this time, the airflow is driven through the annular air duct 103 and the central air duct 102 and then enters the main air duct 101. After flowing through the main air duct 101, it passes through the air-gathering grille 5 and is blown to the outside. This can integrate the airflow into a concentrated airflow, resulting in a long air delivery distance and ensuring the volume of cold air. In the warm air mode, the heating element 4 is working, the air guide plate 15 is in the closed position, and the fan assembly is in the first working state. At this time, the airflow is driven through the air-gathering grille 5 and enters the main air duct 101, then enters the annular air duct 103. After being heated by the heating element 4 inside the annular air duct 103, it passes through the air-expanding grille 6 and is blown to the outside. The airflow is integrated into a diffused airflow after passing through the air-expanding grille 6, resulting in a large diffusion range and rapid diffusion, which is suitable for uniform heating in winter and preventing excessive heat concentration.

[0096] In one specific embodiment, the air expansion grille 6 includes an annular grille 602 and a protective grille 603. The projection of the annular grille 602 along the airflow direction overlaps with the projection of the annular air duct 103 along the airflow direction, and the protective grille 603 is disposed opposite to the central air duct 102.

[0097] Specifically in one embodiment, such as Figures 15 to 17The air guide plate assembly includes a first mounting bracket 17, which includes a first central connecting portion 1701 and a first annular connecting portion 1702. The air guide plate 15 is rotatably disposed between the first central connecting portion 1701 and the first annular connecting portion 1702. The air guide plate 15 includes a plate body 1501. When the air guide plate 15 is in the closed position, each plate body 1501 is formed on the same plane or annular cone surface or adjacent plate bodies 1501 at least partially overlap to block the communication between the main air duct 101 and the central air duct 102. When the air guide plate 15 is in the open position, an air vent is formed between adjacent plate bodies 1501 to allow airflow to pass through so that the main air duct 101 and the central air duct 102 can communicate.

[0098] In this embodiment, when the air guide plate 15 is in the closed position, each plate 1501 is formed on the same plane or annular cone surface, or adjacent plates 1501 at least partially overlap, which can block airflow through the central air duct 102. When the air guide plate 15 is in the open position, an air passage is formed between adjacent plates 1501 to allow airflow to pass through the first mounting bracket 17. By setting the first mounting bracket 17, the air guide plate assembly can be pre-assembled, facilitating the assembly of the entire head assembly.

[0099] In this embodiment, the plate 1501 is a flat plate. When the plate 1501 is a curved plate, the air guide plate 15 is in the open position, and the air passage between two adjacent plates 1501 can allow airflow to pass through.

[0100] Specifically in one embodiment, such as Figure 17 As shown, the first annular connecting part 1702 and the first central connecting part 1701 are connected by a plurality of radially arranged first connecting ribs 1703.

[0101] In a preferred embodiment, when the air guide plate 15 is in the open position, each plate 1501 is formed on an annular conical surface.

[0102] In an alternative embodiment, the air guide plate 15 can be unfolded and retracted like a folding fan, closing the central air duct 102 when unfolded and opening the central air duct 102 when retracted.

[0103] In one specific embodiment, the plate body 1501 of the air guide plate 15 is fan-shaped, and multiple air guide plates 15 are evenly arranged circumferentially. When multiple air guide plates 15 are simultaneously in the closed position, the multiple air guide plates 15 are on the same plane or the same annular cone surface or two adjacent air guide plates 15 at least partially overlap.

[0104] In one embodiment, the first central connecting portion 1701 and / or the first annular connecting portion 1702 are provided with a plurality of first slots 1704 in the circumferential direction, and the air guide plate 15 includes a rotating shaft 1502 located at at least one end of the plate body 1501, the rotating shaft 1502 being disposed in the first slot 1704.

[0105] In this embodiment, by providing a plurality of first slots 1704 along the circumference of the first central connecting part 1701 and / or the first annular connecting part 1702, and the rotating shaft 1502 being disposed in the first slots 1704, it is convenient to position and install the air guide plate 15, thereby improving assembly efficiency.

[0106] In a preferred embodiment, both the first central connecting portion 1701 and the first annular connecting portion 1702 are provided with a plurality of first slots 1704 along the circumferential direction. The first slots 1704 provided in the first central connecting portion 1701 and the first slots 1704 provided in the first annular connecting portion 1702 correspond one-to-one. The air guide plate 15 includes rotating shafts 1502 located at both ends of the plate body 1501, and the rotating shafts 1502 at both ends are disposed in the corresponding first slots 1704.

[0107] In another embodiment, such as Figure 19 As shown, the first mounting bracket 17 includes a first central connecting portion 1701, a first annular wall plate 1708, and a second annular wall plate 1709. The inner side of the first annular wall plate 1708 forms a central air duct 102, and the gap between the first annular wall plate 1708 and the second annular wall plate 1709 forms an annular air duct 103. The first annular connecting portion 1702 is located on the inner side of the first annular wall plate 1708.

[0108] In one embodiment, the air guide plate assembly further includes a third drive assembly, which is connected to a plurality of air guide plates 15 and is capable of driving the air guide plates 15 to switch between a closed position and an open position. The air guide plate 15 also includes a rocker arm 1503. The third drive assembly includes a rotating member 18, which is provided with a plurality of actuating slots 1801 spaced apart along the circumference. The rocker arm 1503 is disposed in the actuating slots 1801. When the rotating member 18 rotates, it drives the rocker arm 1503 to move, thereby driving the air guide plate 15 to rotate.

[0109] In this embodiment, the rocker arm 1503 is disposed in the actuation groove 1801, and the rotating shaft 1502 at at least one end of the plate 1501 is disposed in the first slot 1704. The rocker arm 1503, in conjunction with the rotating shaft 1502, can quickly complete the assembly of the air guide plate 15. When the rotating component 18 rotates, it drives the rocker arm 1503 to move, thereby driving the air guide plate 15 to rotate. Therefore, the rotation of one rotating component 18 can simultaneously drive multiple air guide plates 15 to rotate together, resulting in a simpler structure and lower cost.

[0110] Specifically, the joystick 1503 and the plate 1501 are not coplanar.

[0111] In one specific embodiment, the rocker arm 1503 is disposed in the actuation groove 1801 of the rotating member 18, and the plate 1501 has a rotating shaft 1502 at the end near the rocker arm 1503. The rocker arm 1503 is connected to the rotating shaft 1502 at the end of the plate 1501 near the rocker arm 1503. The rotating shaft 1502 connected to the rocker arm 1503 is disposed in the first slot 1704 of the first central connecting portion 1701; or, the rocker arm 1503 is disposed in the actuation groove 1801 of the rotating member 18, and the plate 1501 has a rotating shaft 1502 at the end away from the rocker arm 1503. The rocker arm 1503 is connected to the rotating shaft 1502 at the end of the plate 1501 away from the rocker arm 1503. 01 The other end is connected, and the pivot 1502 of the plate 1501 away from the rocker arm 1503 is located in the first slot 1704 of the first annular connecting part 1702; or, the rocker arm 1503 is located in the actuation slot 1801 of the rotating member 18, and the two ends of the plate 1501 are provided with pivots 1502. The rocker arm 1503 is connected to the pivot 1502 of the plate 1501 near the rocker arm 1503. The pivots 1502 at both ends of the plate 1501 are respectively located in the first slot 1704 of the first central connecting part 1701 and the first slot 1704 of the first annular connecting part 1702.

[0112] In one embodiment, such as Figure 15 As shown, the rotating member 18 has a meshing part 1802, and the third drive assembly further includes a second drive motor 19 and a second drive gear 20. The second drive motor 19 is fixed relative to the first center connection part 1701; the second drive gear 20 is connected to the output shaft of the second drive motor 19 and meshes with the meshing part 1802.

[0113] In this embodiment, when the second drive motor 19 is working, it drives the second drive gear 20 to rotate. The second drive gear 20 meshes with the meshing part 1802 of the rotating member 18, thereby driving the rotating member 18 to rotate, which in turn drives the rocker arm 1503 to rotate to a certain extent, thereby simultaneously driving each air guide plate 15 to flip. The drive assembly has a simple structure and reliable transmission.

[0114] In one specific embodiment, the meshing part 1802 has internal meshing teeth, the driving gear has external meshing teeth, and the driving gear is located inside the driven gear, thereby making the structure of the drive assembly more compact.

[0115] In one embodiment, the air guide plate assembly further includes a drive motor bracket 21, which is fixedly connected to the first central connection portion 1701, and the second drive motor 19 is fixed to the drive motor bracket 21. The rotating component 18 is rotatably engaged with the drive motor bracket 21.

[0116] In this embodiment, by providing a drive motor bracket 21, the installation of the second drive motor 19 is facilitated. In addition, the rotating part 18 is rotatably engaged with the drive motor bracket 21, and the drive motor bracket 21 can limit the rotation of the rotating part 18 and ensure that the rotating part 18 can rotate smoothly.

[0117] In one specific embodiment, the drive motor bracket 21 is connected to the first central connection portion 1701 by screws and / or snap fasteners.

[0118] In one embodiment, the drive motor bracket 21 is provided with a mounting shaft 2101, and the rotating component 18 is provided with a mounting through hole 1803. After the mounting shaft 2101 passes through the mounting through hole 1803, the mounting shaft 2101 is fixedly connected to the first central connecting part 1701.

[0119] In this embodiment, after the mounting shaft 2101 passes through the mounting through hole 1803, the mounting shaft 2101 is fixedly connected to the first central connecting part 1701, which can connect the drive motor bracket 21, the rotating part 18 and the first mounting bracket 17 into a whole, thereby improving assembly stability and assembly efficiency.

[0120] In one specific embodiment, the first central connecting part 1701 is provided with a first screw through hole 1705, and the mounting shaft 2101 is provided with a threaded hole. The screw passes through the first screw through hole 1705 and is tightened in the threaded hole.

[0121] In one embodiment, the rotating member 18 and the drive motor bracket 21 are engaged by a limiting structure, which is used to limit the rotation angle of the rotating member 18.

[0122] In this embodiment, by setting a limiting structure to restrict the rotation angle of the rotating member 18, it can be ensured that the air guide plate 15 can only switch between the open position and the closed position.

[0123] In one embodiment, the limiting structure includes a limiting groove 1804 and a limiting rib. The limiting groove 1804 is provided in one of the rotating member 18 and the drive motor bracket 21, and the limiting rib is provided in the other of the rotating member 18 and the drive motor bracket 21. The limiting rib is adapted to move along the limiting groove 1804.

[0124] In this embodiment, the limiting rib and the limiting groove 1804 cooperate to limit the rotation angle of the rotating member 18, which can ensure that the air guide plate 15 can only switch between the open position and the closed position.

[0125] In one specific embodiment, when the limiting rib is located at one end of the limiting groove 1804, the air guide plate 15 is parallel to the axis of the main air duct 101; when the limiting rib is located at the other end of the limiting groove 1804, the air guide plate 15 is in the closed position.

[0126] In one specific embodiment, the limiting rib is provided on the drive motor bracket 21, and the limiting groove 1804 is provided on the rotating member 18.

[0127] In one embodiment not shown in the figure, the limiting rib can be provided on the rotating member 18, and the limiting groove 1804 can be provided on the drive motor bracket 21.

[0128] Specifically, such as Figure 18 As shown, the limiting groove 1804 is an arc-shaped groove.

[0129] In one embodiment, the rotating member 18 is located between the drive motor bracket 21 and the first central connection portion 1701. The first central connection portion 1701 is provided with a first limiting portion 1706, which restricts the rotating member 18 from moving axially.

[0130] In one specific embodiment, the first limiting part 1706 is annular, and the rotating member 18 is provided with an annular stepped surface 1805, with the first limiting part 1706 abutting against the annular stepped surface 1805. In another embodiment, the first limiting part 1706 is annular, and the rotating member 18 is provided with an annular stepped surface 1805, with a certain gap between the first limiting part 1706 and the annular stepped surface 1805, to prevent the rotating member 18 from moving axially and causing the rotating shaft 1502 of the air guide plate 15 to disengage from the receiving space formed by the second slot 1106 and the first slot 1704 on the first annular connecting part 1702, thereby avoiding the air guide plate 15 from disengaging from the limiting of the outer shell 11 and the first mounting bracket 17 and thus preventing the air guide plate 15 from smoothly switching between the open and closed positions, improving assembly stability.

[0131] In one embodiment, the first central connecting portion 1701 is provided with a second limiting portion 1707, which restricts the second driving gear 20 from moving axially.

[0132] In one embodiment, the head assembly includes a control module 9 and an operation interface 10. The control module 9 is electrically connected to at least the main motor 3 and the heating component 4, and the control module 9 and the operation interface 10 are positioned opposite each other.

[0133] In this embodiment, the control module 9 is electrically connected to at least the main motor 3 and the heating component 4. The control module 9 is positioned opposite to the operation interface 10. The user can operate the control module 9 by manipulating the operation interface 10, thereby controlling the machine head component to work in different modes.

[0134] In one embodiment, the head assembly includes a housing 11 that surrounds the air duct structure 1, a control module 9 located on the outside of the air duct structure 1, and an operation interface 10 located on the housing 11.

[0135] In this embodiment, the housing 11 makes the head assembly look more aesthetically pleasing.

[0136] Specifically, such as Figure 2 As shown, the outer shell 11 includes an upper shell 1101 and a lower shell 1102. The upper shell 1101 and the lower shell 1102 are detachably connected, which makes it easier to assemble the head assembly. The operation interface 10 is located on the upper shell 1101.

[0137] In another embodiment, such as Figure 20 As shown, the outer casing 11 includes a cylindrical shell 1103, a second central connecting part 1104 and a second annular connecting part 1105, and a first mounting bracket 17 is fixedly connected to the outer casing 11 or the air duct structure 1.

[0138] Specifically, the first annular connecting part 1702 and the first central connecting part 1701 are connected by a plurality of radially arranged first connecting ribs 1703, or the first annular wall panel 1708 and the first central connecting part 1701 are connected by a plurality of radially arranged first connecting ribs 1703. The end of the first connecting rib 1703 is provided with a second screw through hole 1710. The second central connecting part 1104 and the second annular connecting part 1105 are connected by a plurality of radially arranged second connecting ribs 1107. The end of the second connecting rib 1107 is provided with a first screw post 1108. The first screw post 1108 and the second screw through hole 1710 correspond one-to-one. After the screw passes through the second screw through hole 1710, it is tightened in the first screw post 1108 to fix the outer shell 11 to the first mounting bracket 17.

[0139] In one embodiment, the first annular connecting portion 1702 and the first central connecting portion 1701 are connected by a plurality of radially arranged first connecting ribs 1703, or the first central connecting portion 1701 is connected to the first annular wall panel 1708 through the first connecting ribs 1703. Along the radial direction of the main air duct 101, the first connecting ribs 1703 gradually tilt away from the main air duct 101. The air guide plate 15 is disposed between the first mounting bracket 17 and the outer casing 11. When the air guide plate 15 is switched to the closed position, along the radial direction of the main air duct 101, the air guide plate 15 gradually tilts away from the main air duct 101.

[0140] In this embodiment, along the radial direction of the main air duct 101, the first connecting rib 1703 gradually tilts away from the main air duct 101, and the first central connecting portion 1701 is closer to the main air duct 101, so that a larger space is formed between the first mounting bracket 17 and the outer shell 11 to accommodate the air guide plate assembly, avoiding the unsightly appearance caused by the outer shell 11 protruding outward. Secondly, the air guide plate assembly is limited and installed between the first mounting bracket 17 and the outer shell 11. Along the radial direction of the main air duct 101, the first connecting rib 1703 gradually tilts away from the main air duct 101. When the air guide plate 15 is switched to the closed position, along the radial direction of the main air duct 101, the air guide plate 15 also gradually tilts away from the main air duct 101. The tilted air guide plate 15 makes it easier for the airflow from the main air duct 101 to flow into the annular air duct 103, reducing airflow resistance and avoiding airflow dead zones.

[0141] In one specific embodiment, the second annular connecting portion 1105 is provided with a second slot 1106, which corresponds one-to-one with the first slot 1704 provided on the first annular connecting portion 1702. When the first mounting bracket 17 is assembled with the outer shell 11, the rotating shaft 1502 of the plate 1501 near the end of the first annular connecting portion 1702 is limited between the second slot 1106 and the first slot 1704 on the first annular connecting portion 1702. This can prevent the air guide plate 15 from falling off the outer shell 11, and can also effectively prevent the rotating shaft 1502 of the air guide plate 15 from moving up, down, left, and right significantly when it rotates.

[0142] In one embodiment, the air expansion grille 6 includes an annular grille 602 disposed opposite to the annular air duct 103 and a protective grille 603 disposed opposite to the central air duct 102, wherein the annular grille 602 is integrally formed with the outer shell 11.

[0143] In one embodiment, the protective grille 603 is connected to the housing 11 and disposed opposite to the central air duct 102.

[0144] In one embodiment, a decorative cover 12 is connected to the center of the wind-gathering grille 5 and / or the wind-expanding grille 6, and the operation interface 10 is located on the decorative cover 12.

[0145] In this embodiment, the decorative cover 12 makes the head assembly look more aesthetically pleasing.

[0146] In one specific embodiment, the air-expanding grille 6 includes a protective grille 603 disposed opposite to the central air duct 102, and a decorative cover 12 is connected to the center of the air-concentrating grille 5 and / or the protective grille 603.

[0147] In a preferred embodiment, both the wind-gathering grille 5 and the wind-expanding grille 6 are connected to a decorative cover 12 at their center. Each decorative cover 12 is provided with an operation interface 10. When the wind-gathering grille 5 faces the user, the operation interface 10 on the decorative cover 12 at the center of the wind-gathering grille 5 is activated. When the wind-expanding grille 6 faces the user, the operation interface 10 on the decorative cover 12 at the center of the wind-expanding grille 6 is activated.

[0148] In one embodiment, the head assembly further includes a micro switch 13, which is located on the main circuit that supplies power to the head assembly or on the circuit that supplies power to the heating element 4. The air-concentrating grille 5 is linked to the micro switch 13, and / or the air-expanding grille 6 is linked to the micro switch 13. After the air-concentrating grille 5 and / or the air-expanding grille 6 are assembled in place, the micro switch 13 is closed. After the air-concentrating grille 5 and / or the air-expanding grille 6 are disassembled, the micro switch 13 is opened.

[0149] In this embodiment, the air-gathering grille 5 and / or the air-expanding grille 6 are linked with the micro switch 13. After the air-gathering grille 5 and / or the air-expanding grille 6 are assembled in place, the micro switch 13 is closed, which can supply power to the head assembly or the heating component 4 normally. When the air-gathering grille 5 and / or the air-expanding grille 6 are disassembled, the micro switch 13 is opened, which can prevent the electrical components or the heating component 4 in the head assembly from still working and causing danger after the air-gathering grille 5 and / or the air-expanding grille 6 are disassembled.

[0150] In one specific embodiment, the air-expanding grille 6 includes an annular grille 602 disposed opposite to the annular air duct 103 and a protective grille 603 disposed opposite to the central air duct 102. The air-concentrating grille 5 is linked to the micro switch 13, and / or the annular grille 602 is linked to the micro switch 13, and / or the protective grille 603 is linked to the micro switch 13. After the air-concentrating grille 5 and / or the annular grille 602 and / or the protective grille 603 are assembled in place, the micro switch 13 is closed. After the air-concentrating grille 5 and / or the annular grille 602 and / or the protective grille 603 are disassembled, the micro switch 13 is disconnected.

[0151] In a preferred embodiment, the micro switch 13 is located on the circuit that supplies power to the heating element 4. After the air-concentrating grille 5 and / or the air-expanding grille 6 are removed, the main motor 3 can still operate, thereby blowing air to dissipate heat from the heating element 4.

[0152] In one specific embodiment, the ventilation grille 6 is linked to the micro switch 13.

[0153] In one embodiment, such as Figure 4 As shown, the head assembly includes a button 14, which is positioned opposite to the spring arm of the micro switch 13. After the air-gathering grille 5 and / or the air-expanding grille 6 are assembled in place, the air-gathering grille 5 and / or the air-expanding grille 6 press against the button 14 to close the micro switch 13.

[0154] In this embodiment, after the wind-gathering grille 5 and / or the wind-expanding grille 6 are assembled in place, the wind-gathering grille 5 and / or the wind-expanding grille 6 press against the button 14, and the button 14 presses the spring arm of the micro switch 13, thereby closing the micro switch 13. When the wind-gathering grille 5 and / or the wind-expanding grille 6 are disassembled, the button 14 is no longer pressed, and the micro switch 13 is opened.

[0155] In one specific embodiment, the air-expanding grille 6 includes an annular grille 602 disposed opposite to the annular air duct 103 and a protective grille 603 disposed opposite to the central air duct 102. The head assembly includes a button 14, which is disposed opposite to the spring arm of the micro switch 13. After the air-concentrating grille 5 and / or the annular grille 602 and / or the protective grille 603 are assembled in place, the air-concentrating grille 5 and / or the annular grille 602 and / or the protective grille 603 press against the button 14, and the button 14 presses the spring arm of the micro switch 13, thereby closing the micro switch 13. When the air-concentrating grille 5 and / or the annular grille 602 and / or the protective grille 603 are removed, the button 14 is no longer pressed, and the micro switch 13 is opened.

[0156] In one embodiment, the head assembly is provided with a dustproof structure.

[0157] In this embodiment, dust can be prevented from falling onto the head assembly by providing a dustproof structure on the outside of the head assembly.

[0158] In one specific embodiment, the dustproof structure may be a dust filter. The dust filter is detachably connected to the outside of the air-gathering grille 5, and / or the dust filter is detachably connected to the outside of the air-expanding grille 6.

[0159] In one specific embodiment, the air expansion grille 6 includes an annular grille 602 disposed opposite to the annular air duct 103 and a protective grille 603 disposed opposite to the central air duct 102, and the dust filter can be detachably connected to the air gathering grille 5 and / or the annular grille 602 and / or the protective grille 603.

[0160] In one embodiment, the air-gathering grille 5 and / or the air-expanding grille 6 are connected to a humidification module.

[0161] In this embodiment, by connecting a humidification module to the air-gathering grille 5 and / or the air-expanding grille 6, the heating element 4 and the humidification module can work simultaneously in the warm air mode. While the warm air is blown out from the air-expanding grille 6, the water vapor generated by the humidification module is also blown towards the user, avoiding the air from drying out due to the warm air and improving the user experience.

[0162] In one specific embodiment, the air expansion grille 6 includes an annular grille 602 disposed opposite to the annular air duct 103 and a protective grille 603 disposed opposite to the central air duct 102, and a humidification module is connected to the air gathering grille 5 and / or the annular grille 602 and / or the protective grille 603.

[0163] In one specific embodiment, the humidification module may include a water tank and an atomizing plate, which can atomize the water in the water tank.

[0164] In one specific embodiment, the humidification module is detachably connected to the air venting grille 6.

[0165] According to an embodiment of the present invention, another aspect provides an air outlet device, including a body and a head assembly provided in the above embodiment, the head assembly being disposed on the body.

[0166] In cold air mode, the heating element 4 is not working, and the fan assembly is in its second working state. At this time, the airflow passes through the diffuser grille 6 and enters the main air duct 101. After passing through the main air duct 101, it passes through the concentrator grille 5 and is blown outwards. By setting the concentrator grille 5, the airflow can be concentrated, resulting in a long delivery distance. In warm air mode, the heating element 4 is working, and the fan assembly is in its first working state. At this time, the airflow passes through the concentrator grille 5 and enters the main air duct 101. After passing through the main air duct 101, it passes through the diffuser grille 6 and is blown outwards. The airflow, after passing through the diffuser grille 6, is concentrated into diffused air, resulting in a large diffusion range and rapid diffusion, suitable for uniform heating in winter to prevent excessive heat concentration.

[0167] In one specific embodiment, the air duct structure 1 includes a main air duct 101, an annular air duct 103, and a central air duct 102. The annular air duct 103 and the central air duct 102 are located at the same end of the main air duct 101, and the annular air duct 103 is located on the outer periphery of the central air duct 102. The heating element 4 is located in the annular air duct 103. The air expansion grille 6 includes an annular grille 602 and a protective grille 603. The head assembly also includes an air guide plate assembly, which includes multiple air guide plates 15. The multiple air guide plates 15 have an open position for opening the central air duct 102 and a closed position for closing the central air duct 102. In the cold air mode, the air guide plates 15 are in the open position, and in the warm air mode, the air guide plates 15 are in the closed position.

[0168] In cold air mode, the heating element 4 is not working, the air guide plate 15 is in the open position, and the fan assembly is in the second working state. At this time, the airflow is driven through the annular grille 602 and the protective grille 603, and then enters the annular air duct 103 and the central air duct 102 respectively. After entering the main air duct 101, it passes through the wind-gathering grille 5 and is blown to the outside. This can integrate the airflow into a concentrated airflow, resulting in a long air delivery distance and ensuring the volume of cold air. In warm air mode, the heating element 4 is working, the air guide plate 15 is in the closed position, and the fan assembly is in the first working state. At this time, the airflow is driven through the wind-gathering grille 5 and enters the main air duct 101. After entering the annular air duct 103, it is heated by the heating element 4 inside the annular air duct 103, and then passes through the annular grille 602 and is blown to the outside. The airflow is integrated into a diffused airflow after passing through the annular grille 602, resulting in a large diffusion range and rapid diffusion. This is suitable for uniform heating in winter and preventing excessive heat concentration.

[0169] In one embodiment, the height of the fuselage is adjustable.

[0170] In this embodiment, the height of the device is adjustable to accommodate the drying needs of users of different heights.

[0171] In one specific embodiment, the body includes a chassis 22 and a telescopic tube 23 disposed on the chassis 22. The telescopic tube 23 includes multiple tube bodies that can extend or retract sequentially.

[0172] Specifically, such as Figure 3 As shown, the multi-stage pipe body includes an upper pipe 2301, a middle pipe 2302, and a lower pipe 2303 that are sequentially connected.

[0173] In one specific embodiment, the machine body includes a chassis 22 and a telescopic tube 23 disposed on the chassis 22. The telescopic tube 23 may include a fixed tube and a movable tube, and the movable tube may extend or retract under the drive of a screw and nut mechanism.

[0174] In one specific embodiment, the fuselage also includes a semi-annular support structure 24 located at the top of the telescopic tube 23, and the head assembly is located inside the semi-annular support structure 24.

[0175] In one embodiment, the air outlet device is provided with an oscillating structure, which enables the head assembly to oscillate left and right and / or up and down. Specifically, an oscillating structure is provided between the head assembly and the body to enable the head assembly to oscillate up and down, that is, an oscillating structure is provided between the head assembly and the semi-annular support structure 24, which enables the head assembly to oscillate up and down; and / or, the body is provided with an oscillating structure to enable the head assembly to oscillate left and right, that is, an oscillating structure is provided between the telescopic tube 23 and the semi-annular support structure 24, which enables the head assembly to oscillate left and right.

[0176] In this embodiment, by setting an oscillating structure, the air supply range can be expanded. In the cold air mode, the oscillating structure can make the air-gathering grille 5 face the user, and in the warm air mode, the air-expanding grille 6 can face the user, so that both cold and warm air can be blown towards the user.

[0177] In one specific embodiment, a left-right oscillating motor 25 is provided between the telescopic tube 23 and the semi-circular support structure 24, and an up-down oscillating motor is connected to the outside of the air duct structure 1. The up-down oscillating motor passes through the outer shell 11 and is connected to the semi-circular support structure 24.

[0178] In one embodiment, in cold air mode, the oscillating structure directs the air-concentrating grille 5 toward the user; and / or, in warm air mode, the oscillating structure directs the air-expanding grille 6 toward the user.

[0179] In one embodiment, the air outlet device is a fan or a heater.

[0180] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by this application.

Claims

1. A head assembly, characterized in that, include: Air duct structure (1); A fan blade assembly is disposed within the air duct structure (1) and includes a fan blade (2) and a main motor (3) capable of driving the fan blade (2) to rotate. The fan blade assembly has a first working state and a second working state. In the first working state, the fan blade (2) drives the airflow from the first end of the air duct structure (1) to the second end of the air duct structure (1). In the second working state, the fan blade (2) drives the airflow from the second end of the air duct structure (1) to the first end of the air duct structure (1). A heating element (4) is disposed in the air duct structure (1); A wind-gathering grille (5) is disposed at the first end of the air duct structure (1); An air-expanding grille (6) is provided at the second end of the air duct structure (1); The head assembly has a cold air mode and a warm air mode. In the cold air mode, the fan blade assembly is in a second working state, and in the warm air mode, the fan blade assembly is in a first working state.

2. The head assembly according to claim 1, characterized in that, The wind-gathering grille (5) includes a plurality of grille bars (502) spaced apart and evenly distributed along the circumference, and the rotation direction of the grille bars (502) of the wind-gathering grille (5) is opposite to the rotation direction of the wind blade (2); And / or, the air-expanding grille (6) includes a plurality of grille bars (502) spaced apart and evenly distributed along the circumference, and in the warm air mode, the rotation direction of the grille bars (502) of the air-expanding grille (6) is the same as the rotation direction of the fan blade (2); And / or, the air-expanding grille (6) includes a plurality of evenly distributed air guide holes (601).

3. The head assembly according to claim 1, characterized in that, The wind-gathering grille (5) includes an air guide channel (501) that is axially parallel to the air duct structure (1), and the length of the air guide channel (501) is h, where h ≥ 5 mm.

4. The head assembly according to claim 1, characterized in that, The wind-gathering grille (5) includes a plurality of grille bars (502) spaced apart and evenly distributed along the circumference, and the space between two adjacent grille bars (502) forms an air guide channel (501); the wind-expanding grille (6) includes a plurality of evenly distributed air guide holes (601), and the length of the air guide hole (601) is less than the length of the air guide channel (501).

5. The head assembly according to claim 1, characterized in that, The main motor (3) is capable of rotating in a first direction or a second direction. When the fan blade assembly is in the first working state, the main motor (3) rotates in the first direction. When the fan blade assembly is in the second working state, the main motor (3) rotates in the second direction. The first direction is opposite to the second direction.

6. The head assembly according to claim 1, characterized in that, The tilt angle of the fan blade (2) can be adjusted so that the fan blade assembly has the first working state and the second working state.

7. The head assembly according to claim 1, characterized in that, The main motor (3) is rotatably disposed within the air duct structure (1) and has a first position that brings the fan blade (2) close to the first end of the air duct structure (1) and a second position that brings the fan blade (2) close to the second end of the air duct structure (1). When the fan blade assembly is in the second working state, the main motor (3) is in the first position, and when the fan blade assembly is in the first working state, the main motor (3) is in the second position.

8. The head assembly according to any one of claims 1 to 7, characterized in that, The heating element (4) is positioned close to the air vent (6).

9. The head assembly according to claim 8, characterized in that, The heating component (4) includes a heating bracket (401) and a heating element (402), wherein the heating element (402) is distributed along the circumference and radial direction of the heating bracket (401).

10. The head assembly according to any one of claims 1 to 7 and 9, characterized in that, The heating component (4) is equipped with a safety temperature limiting device (8), which is located on the main circuit that supplies power to the head assembly or on the circuit that supplies power to the heating component (4).

11. The head assembly according to any one of claims 1 to 7 and 9, characterized in that, The air duct structure (1) includes a main air duct (101), an annular air duct (103) and a central air duct (102). The annular air duct (103) and the central air duct (102) are located at the same end of the main air duct (101). The annular air duct (103) is located on the outer periphery of the central air duct (102). The heating component (4) is located in the annular air duct (103). The projection of the air expansion grille (6) along the airflow direction at least partially overlaps with the projection of the annular air duct (103) along the airflow direction. The head assembly also includes an air guide plate assembly, which includes multiple air guide plates (15). The multiple air guide plates (15) have an open position for opening the central air duct (102) and a closed position for closing the central air duct (102). In the cold air mode, the air guide plate (15) is in the open position, and in the warm air mode, the air guide plate (15) is in the closed position.

12. The head assembly according to claim 11, characterized in that, The air expansion grille (6) includes an annular grille (602) and a protective grille (603). The projection of the annular grille (602) along the airflow direction overlaps with the projection of the annular air duct (103) along the airflow direction. The protective grille (603) is arranged opposite to the central air duct (102).

13. The head assembly according to any one of claims 1 to 7 and 9, characterized in that, The machine head assembly includes a control module (9) and an operation interface (10). The control module (9) is electrically connected to at least the main motor (3) and the heating component (4). The control module (9) and the operation interface (10) are arranged opposite to each other.

14. The head assembly according to claim 13, characterized in that, The head assembly includes a housing (11) that surrounds the air duct structure (1), the control module (9) is located outside the air duct structure (1), and the operation interface (10) is located on the housing (11).

15. The head assembly according to claim 13, characterized in that, The center of the wind-gathering grille (5) and / or the wind-expanding grille (6) is connected to a decorative cover (12), and the operation interface (10) is located on the decorative cover (12).

16. The head assembly according to any one of claims 1 to 7, 9, 14, and 15, characterized in that, The head assembly also includes a micro switch (13), which is located on the main circuit that supplies power to the head assembly or on the circuit that supplies power to the heating element (4). The air-gathering grille (5) is linked with the micro switch (13), and / or the air-expanding grille (6) is linked with the micro switch (13). After the air-gathering grille (5) and / or the air-expanding grille (6) are assembled in place, the micro switch (13) is closed. After the air-gathering grille (5) and / or the air-expanding grille (6) are disassembled, the micro switch (13) is disconnected.

17. The head assembly according to claim 16, characterized in that, The head assembly includes a button (14), which is disposed opposite to the spring arm of the micro switch (13). After the wind-gathering grille (5) and / or the wind-expanding grille (6) are assembled in place, the wind-gathering grille (5) and / or the wind-expanding grille (6) press against the button (14) to close the micro switch (13).

18. The head assembly according to any one of claims 1 to 7, 9, 12, 14, 15, and 17, characterized in that, The head assembly is equipped with a dustproof structure.

19. The head assembly according to any one of claims 1 to 7, 9, 12, 14, 15, and 17, characterized in that, The air-gathering grille (5) and / or the air-expanding grille (6) are connected to a humidification module.

20. An air outlet device, characterized in that, include: body; The nose assembly according to any one of claims 1 to 19, wherein the nose assembly is disposed on the fuselage.

21. The air outlet device according to claim 20, characterized in that, The height of the fuselage is adjustable.

22. The air outlet device according to claim 20 or 21, characterized in that, The air outlet device is equipped with a oscillating structure, which enables the head assembly to oscillate left and right and / or up and down.

23. The air outlet device according to claim 22, characterized in that, In the cold air mode, the oscillating structure directs the air-gathering grille (5) toward the user; and / or, in the warm air mode, the oscillating structure directs the air-expanding grille (6) toward the user.

24. The air outlet device according to claim 20 or 21, characterized in that, The air outlet device is a fan or a heater.

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