Fan device

Abstract

Embodiments of the present application provide a fan device, wherein the fan device comprises a head mechanism, the head mechanism comprising: a casing, a main air inlet and an air outlet are arranged on a circumferential side wall of the casing, and an auxiliary air inlet is arranged on an axial wall surface of the casing; a centrifugal volute is arranged in the casing, and a centrifugal fan is arranged in the centrifugal volute, and a wind channel outlet corresponding to the air outlet and a wind channel inlet corresponding to the auxiliary air inlet are arranged on the centrifugal volute; wherein the air flowing in through the main air inlet and the auxiliary air inlet flows into the centrifugal volute through the wind channel inlet. In the technical scheme of the present application, multiple air inlets are adopted to ensure that a large flow of air flows in, so that a large air volume is achieved.

Description

[0001] This application is a divisional application of Chinese patent application No. 202310292718.1, filed on March 23, 2023, entitled "Fan Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This invention relates to the field of fan technology, and more specifically, to a fan device. Background Technology

[0003] Currently, in related technologies, the placement of circulation fans usually needs to be inside the space. However, in some usage scenarios, when circulation fans need to be placed against a wall or in a corner, the air intake is limited and they cannot deliver air normally. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] In view of this, an embodiment of the first aspect of the present invention provides a head mechanism.

[0006] An embodiment of the second aspect of the present invention provides a fan device.

[0007] To achieve the above objectives, an embodiment of the first aspect of the present invention provides a head mechanism, comprising: a housing, wherein a main air inlet and an air outlet are provided on the circumferential side wall of the housing, and an auxiliary air inlet is provided on the axial wall of the housing; a centrifugal volute, disposed within the housing, and wherein a centrifugal fan is provided within the centrifugal volute, wherein an air duct outlet corresponding to the air outlet and an air duct inlet corresponding to the auxiliary air inlet are provided on the centrifugal volute; wherein air flowing in from the main air inlet and the auxiliary air inlet flows into the centrifugal volute through the air duct inlet.

[0008] The head mechanism proposed in this invention mainly includes a housing and a centrifugal fan assembly. The centrifugal fan assembly consists of a centrifugal volute and a centrifugal fan. By placing the centrifugal volute inside the housing, air circulation is achieved through the air outlet and main air inlet on the housing. Since the head mechanism of this solution uses a centrifugal fan, no fan blades are exposed, greatly increasing safety during operation. It should be emphasized that, in general, the air inlet and outlet of a centrifugal fan are set at a 90-degree angle to each other, such as left and right air inlet and front air outlet. In this solution, the air inlet and outlet are opened at the same position on the housing outside the centrifugal volute, that is, both the air outlet and the main air inlet are located on the circumferential side wall of the housing. During production, only the circumferential side wall of the housing needs to be processed to produce a housing structure with an air outlet and a main air inlet. It should be noted that the main air inlet and the auxiliary air inlet are respectively located on the circumferential and axial walls of the casing. The motor installed inside the volute will obstruct the airflow to a certain extent, resulting in severely uneven air intake on both sides. Alternatively, when the head unit is placed against a wall or in a corner, the auxiliary air inlet will be blocked by the wall, making it impossible to fully utilize the air intake area of ​​the auxiliary air inlet, thereby reducing the air volume and affecting the air output effect. This application utilizes the main air inlet located in the circumferential direction of the casing, which can meet the required air intake volume, making the air intake more uniform, and the position of the product is not affected by the environment, greatly improving the usage scenarios.

[0009] The air outlet and main air inlet on the casing are connected to the centrifugal volute, so that the centrifugal fan can draw in air from the main air inlet and discharge it outward from the air outlet.

[0010] It should be added that an air duct is formed inside the centrifugal fan casing. The air duct outlet corresponds to the air outlet on the casing, and the air duct inlet corresponds to the auxiliary air inlet on the casing. When the centrifugal fan is rotating, air flows into the casing through the main air inlet and the auxiliary air inlet, then flows into the centrifugal fan casing through the air duct inlet, and finally flows out through the air duct outlet and the air outlet. It can be understood that part of the air flowing into the centrifugal fan casing through the air duct inlet flows in through the main air inlet, and the other part flows in through the auxiliary air inlet.

[0011] In the above technical solution, the housing specifically includes: a first support cover and a second support cover, which are connected to form an air outlet and a main air inlet; wherein, the auxiliary air inlet is located on the axial wall surface of the first support cover and / or the axial wall surface of the second support cover.

[0012] In this technical solution, the housing specifically includes a separate first support cover and a second support cover. After the first support cover and the second support cover are connected, the housing is formed, which also forms the air outlet and the main air inlet.

[0013] In one embodiment, the first support cover and the second support cover respectively have partial outline structures of the air outlet and the main air inlet.

[0014] In another embodiment, the air outlet and the main air inlet can be simultaneously located on the first support cover, or simultaneously located on the second support cover.

[0015] In another embodiment, one of the air outlet and the main air inlet is disposed on the first support cover, and the other is disposed on the second support cover.

[0016] The above technical solution also includes: a vent shroud, which is fitted onto the outside of the housing, and the vent shroud is provided with a first grille section corresponding to the main air inlet and / or a second grille section corresponding to the air outlet.

[0017] In this technical solution, by setting an air hood on the outside of the casing, the air hood specifically includes a first grille section and / or a second grille section, so that the air is dispersed when passing through the first grille section or the second grille section, thereby improving the uniformity of air outlet.

[0018] In the above technical solution, the extension direction of the blades in the centrifugal impeller is not parallel to the extension direction of the grid in the second grid section.

[0019] In this technical solution, by restricting the extension direction of the second grille section from being parallel to the extension direction of the blades, the air flowing out of the duct outlet is dispersed by the second grille section, thereby improving the uniformity of the airflow. It can be understood that if the extension direction of the blades is parallel to the extension direction of the second grille section, it will obstruct the airflow direction, resulting in air volume loss.

[0020] Furthermore, viewed from the air outlet, the blades extend horizontally, and the extension direction of the grille can be vertical or inclined, as long as there is a certain angle with the horizontal direction.

[0021] In the above technical solution, the extension direction of the blades in the centrifugal impeller is perpendicular to the extension direction of the grid in the second grid section.

[0022] In this technical solution, by further defining the relative positional relationship between the extension direction of the blades and the extension direction of the grille as perpendicular, the obstruction to the airflow can be minimized, thus ensuring the airflow volume.

[0023] In the above technical solution, on the cross-section of the impeller in the centrifugal fan, the distance between the air duct outlet and the volute tongue of the centrifugal volute in the vertical direction is less than 0.5 times the impeller diameter.

[0024] In this technical solution, by limiting the distance between the air duct outlet and the volute, air can maintain a higher wind speed using a shorter air duct, thereby achieving a longer air delivery distance and improving air circulation in the product's environment. Specifically, on the impeller's cross-section, the lateral distance between the air duct outlet and the volute tongue on the centrifugal volute must be less than 0.5 times the impeller diameter; that is, in the direction perpendicular to the vertical, the distance between the air duct outlet and the volute tongue is <0.5 × impeller diameter.

[0025] It is understandable that the position of the volute tongue is the minimum gap between the impeller and the volute.

[0026] In the above technical solution, on the cross-section of the impeller in the centrifugal fan, the distance between the impeller shaft and the air duct outlet in the vertical direction is 0.7 to 1.3 times the impeller diameter.

[0027] In this technical solution, by limiting the size between the impeller and the air outlet of the volute, and limiting the distance between the air outlet and the impeller shaft in the lateral direction to 0.7 to 1.3 times the impeller diameter, the wind speed at the air outlet can be reduced and the outward wind speed can be increased, thereby improving the circulation effect.

[0028] In the above technical solution, on the plane of the end of the volute tongue and the air duct outlet away from the volute tongue in the centrifugal volute, the vertical distance between the air duct outlet and the plane gradually increases from the end of the air duct outlet away from the volute tongue to the end of the air duct outlet close to the volute tongue.

[0029] In this technical solution, by defining the shape of the air duct outlet, the reference plane is determined to be the plane between the volute tongue in the centrifugal volute and the end of the air duct outlet furthest from the volute tongue. The distance between the air duct outlet and the plane is defined, specifically, from the end of the air duct outlet furthest from the volute tongue to the end closer to the volute tongue, the vertical distance between the air duct outlet and the plane gradually increases, thereby improving the uniformity of airflow. It can be understood that, since traditional air ducts have more airflow at the top, adjusting the grille position and increasing the length of the bottom air duct increases the bottom airflow, thus achieving a uniform airflow effect in both the vertical and horizontal directions.

[0030] In the above technical solution, the outline of the air duct outlet is convex on the cross-section of the centrifugal fan.

[0031] In this technical solution, by defining the shape of the duct outlet, the duct outlet has an outwardly convex profile on the cross-section of the centrifugal fan, which can increase the air volume at the bottom of the duct outlet.

[0032] Furthermore, the curvature of the duct outlet profile is monotonically changing.

[0033] In one embodiment, the curvature of the duct outlet profile is less at the top position than at the bottom position.

[0034] In another embodiment, the curvature of the duct outlet profile is less at the bottom position than at the top position.

[0035] The above technical solution also includes: a filter structure, which is set in accordance with the main air inlet and / or auxiliary air inlet.

[0036] In this technical solution, by setting a filter structure at at least one of the main air inlet and the auxiliary air inlet, the air quality of the indoor environment can be optimized and filtered during the operation of the fan, thereby making the blown air cleaner and improving the user experience.

[0037] Furthermore, the filter structure can be made of HEPA filter, which can filter out small particulate impurities and some harmful substances in the air.

[0038] In the above technical solution, the outer side of the casing is provided with a wind hood, and the wind hood is provided with a first grille part corresponding to the main air inlet. The filter structure is provided on the outer side of the wind hood in correspondence with the first grille part.

[0039] In this technical solution, by setting an air hood on the outside of the casing, and the first grille on the air hood being set in accordance with the main air inlet, the air will be dispersed when passing through the first grille, and the air entering the centrifugal volute will be more uniform.

[0040] In this design, the filter structure is positioned on the outside of the air hood for easier replacement. As the filter is a consumable component, it accumulates dust over time, necessitating replacement. This design addresses this by placing the filter structure on the outside of the air hood, aligning it with the main air inlet, making replacement more convenient for the user.

[0041] In the above technical solution, the circumferential sidewall of the hood is provided with an installation groove corresponding to the main air inlet, and also includes: a cover plate grille, which is detachably connected to the installation groove, and a filter structure is provided between the cover plate grille and the installation groove.

[0042] In this technical solution, an installation groove is provided on the air hood, and the installation groove is located on the circumferential side wall of the air hood corresponding to the main air inlet, specifically on the radial outer side of the main air inlet. On this basis, a cover plate grille is provided, which is also grille-shaped, allowing air to flow normally. This allows the filter structure to be limited and fixed. At the same time, since the cover plate grille and the installation groove are detachably connected, it is also convenient to replace the filter structure.

[0043] It is understood that the detachable connection between the cover plate grille and the mounting groove includes, but is not limited to, snap-fit, threaded connection, magnetic connection, etc.

[0044] The above technical solution also includes: an outer plate, which is disposed on one side of the housing along the axial direction, and an external air inlet corresponding to the auxiliary air inlet is provided on the outer plate; wherein, the external air inlet specifically includes a plurality of first air inlets arranged in a circular array.

[0045] In this technical solution, by setting an outer plate axially outward on the casing, the incoming air can be initially dispersed, thus making the airflow more uniform. Specifically, an external air inlet is provided on the outer plate, and the external air inlet is arranged in a perforated manner. When the centrifugal fan is running, air will flow in through the external air inlet and will also flow into the centrifugal fan through the auxiliary air inlet, thereby completing the air intake.

[0046] It is understood that the positions of the external air inlet and the auxiliary air inlet are corresponding, and the specific correspondence includes, but is not limited to, the external air inlet and the auxiliary air inlet being spaced apart in the axial direction.

[0047] Furthermore, the first air inlet is arranged in a circular array, allowing air to flow in from all directions around the head mechanism through the first air inlet.

[0048] In the above technical solution, the outer panel specifically includes: a first side panel, located on the side of the first support cover away from the second support cover; and a second side panel, located on the side of the second support cover away from the first support cover; wherein, the first side panel and the second side panel are provided with external air inlets corresponding to the auxiliary air inlets.

[0049] In this technical solution, there are two outer panels, specifically a first side panel and a second side panel. Specifically, by setting two side panels outside the two support covers, that is, setting the first side panel outside the first support cover and setting the second side panel outside the second support cover, and setting corresponding external air inlets on the two side panels, air can flow from the external air inlets on the two side panels into the auxiliary air inlets on the casing, thereby completing the air intake.

[0050] In the above technical solution, the first side plate is snapped together with the hood; and / or the second side plate is snapped together with the hood.

[0051] In this technical solution, by snapping together at least one of the first side plate and the second side plate with the hood, the outer side of the entire product is free of screws or other exposed connectors. When both the first side plate and the second side plate are snapped together with the hood, the first side plate, the second side plate and the hood can form a whole.

[0052] Furthermore, the first and second side panels are snap-fitted to the edge of the shroud in the circumferential direction.

[0053] In the above technical solution, the diameter of the first air inlet gradually decreases from the inside to the outside in the radial direction.

[0054] In this technical solution, by limiting the diameter of the first air inlet, it gradually decreases from the inside to the outside in the radial direction, with a larger diameter on the inner side and a smaller diameter on the outer side. On the one hand, by using first air inlets with different diameters, the frequencies of each noise source are varied, avoiding the superposition of fundamental frequencies and effectively reducing noise. On the other hand, the smaller diameter of the outer first air inlet results in less air intake, while the larger diameter of the inner first air inlet results in more air intake, thereby making the air intake velocity as consistent as possible at each radius position and improving the uniformity of air intake.

[0055] In the above technical solution, the diameters of the multiple first air inlets located on the outer plate at the same radius are the same.

[0056] In this technical solution, by limiting the diameter of the first air inlet holes located at the same radius on the outer panel, the diameter of the holes at the same radius is the same. On the one hand, it is convenient to process, and on the other hand, when the air flows to the same radius, the air volume flowing in through the first air inlet hole is more uniform.

[0057] It is understandable that the center of the circle with the same radius is the axis around which the first air inlet hole rotates when it is arranged in a circular array, which is generally the shaft of the centrifugal fan.

[0058] In the above technical solution, the outer panel includes a recessed plate, and the first air inlet is located on the recessed plate.

[0059] In this technical solution, by designing the outer panel to be recessed and setting the first air inlet hole on the recessed panel, the impact of air during negative pressure air intake can be effectively reduced. The recessed panel can play a certain guiding effect on the air. At the same time, by utilizing the Coanda effect, the air tends to flow along the wall, thereby improving the air intake efficiency.

[0060] In the above technical solution, the recessed plate is recessed towards the centrifugal volute, and the outer wall surface of the recessed plate is curved on the cross section of the centrifugal fan shaft.

[0061] In this technical solution, the recessed plate is recessed inward, that is, recessed towards the centrifugal volute. The recessed plate is curved, and the process of air flowing into the first air inlet along the surface of the recessed plate is smoother. The curved structure can effectively improve the air guiding effect and improve the air intake efficiency without increasing wind resistance.

[0062] In the above technical solution, on the cross-section of the centrifugal fan shaft, the angle between the outer wall of the recessed plate and the vertical direction is no greater than 30°.

[0063] In this technical solution, by limiting the angle between the outer wall of the recessed plate and the vertical direction to less than 30 degrees, the recessed angle of the recessed plate is small, the air direction is relatively smooth, reducing the possibility of noise, and at the same time making the guiding effect more obvious, which can take into account both the spatial arrangement of the structure and the air guiding effect.

[0064] In the above technical solution, the auxiliary air inlet specifically includes a plurality of second air inlets arranged in a circular array.

[0065] In this technical solution, the auxiliary air inlet on the casing has a hole-like structure, which includes multiple circumferential arrays of second air inlets. Under the action of the second air inlets, when the air flows from the outer air inlet to the auxiliary air inlet, the air can be dispersed a second time, so that the air flowing into the centrifugal volute is more sufficient and uniform.

[0066] Furthermore, the second air inlet is arranged in a circular array, so that after the air flows into the space between the outer air inlet and the auxiliary air inlet through the first air inlet, air from all directions can flow in through the second air inlet.

[0067] Furthermore, each first air inlet has a corresponding second air inlet.

[0068] Alternatively, the first and second air inlets can be staggered.

[0069] In the above technical solution, the diameter of the second air inlet is the same.

[0070] In this technical solution, by limiting the diameter of the second air inlet, each second air inlet has the same diameter, which is convenient for processing. After being dispersed by the first air inlet, the difference in air volume at each radius is small. Therefore, the air volume can be guaranteed even if the diameter of the second air inlet on the inner side is not changed.

[0071] In the above technical solution, the diameter of the second air inlet gradually decreases from the inside to the outside in the radial direction.

[0072] In this technical solution, by limiting the diameter of the second air inlet, it gradually decreases from the inside to the outside in the radial direction, with a larger diameter on the inner side and a smaller diameter on the outer side. On the one hand, by using second air inlets with different diameters, the frequencies of each noise source are varied, avoiding the superposition of fundamental frequencies and effectively reducing noise. On the other hand, the smaller diameter of the outer second air inlet results in less air intake, while the larger diameter of the inner second air inlet results in more air intake, thereby making the air intake velocity as consistent as possible at each radius position and improving air intake uniformity.

[0073] In the above technical solution, auxiliary air inlets are respectively provided on the axial wall surfaces at both ends of the casing along the axial direction.

[0074] In this technical solution, by setting an auxiliary air inlet on each end face of the casing, i.e. the axial wall surface, the air intake volume of the centrifugal fan can be increased. It can be understood that, based on the main air inlet, two additional auxiliary air inlets are set up, so that when air is intake, air will enter from three directions of the casing, which is more convenient to meet the needs of large air volume use.

[0075] It is understandable that the auxiliary air inlet needs to be connected to the centrifugal volute to facilitate air intake.

[0076] In the above technical solution, the main air inlet and the air outlet are arranged circumferentially along the casing, and the angle between the end of the air outlet near the main air inlet and the end of the main air inlet near the air outlet relative to the rotation axis of the centrifugal fan is not less than 30 degrees.

[0077] In this technical solution, since both the main air inlet and outlet are arranged circumferentially along the casing, the effect of supplementing the intake air volume can be achieved. Specifically, the angle between the straight line of the end of the outlet near the main air inlet relative to the rotation axis of the centrifugal fan and the straight line of the end of the inlet near the outlet relative to the rotation axis of the centrifugal fan is not less than 30 degrees. This ensures that there is a certain gap between the main air inlet and the outlet, preventing the air flowing out of the outlet from directly returning to the main air inlet and guaranteeing the air delivery effect.

[0078] In the above technical solution, the angle between the end of the air outlet near the main air inlet and the end of the main air inlet away from the air outlet relative to the rotation axis of the centrifugal fan is no more than 150 degrees.

[0079] In this technical solution, the furthest position of the main air inlet from the air outlet is limited, that is, the angle between the end of the air outlet near the main air inlet and the end of the main air inlet far from the air outlet relative to the rotation axis of the centrifugal fan is no more than 150 degrees, so as to make full use of the position with the highest air intake efficiency in the centrifugal volute and improve the air intake efficiency.

[0080] In the above technical solution, the angle between the two ends of the main air inlet and the rotation axis of the centrifugal fan is 100 degrees to 130 degrees.

[0081] In this technical solution, by restricting the circumferential position of the main air inlet, limiting the central angles at both ends to 100° to 130°, the overall air intake resistance can be reduced, making full use of the air at the bottom position and greatly increasing the air intake volume. On the other hand, the main air inlet is limited to prevent it from being too large, thereby ensuring the position of the air outlet and the air delivery distance.

[0082] In the above technical solution, the air outlet is located behind the main air inlet along the rotation direction of the centrifugal fan.

[0083] In this technical solution, by limiting the relative positions of the air outlet and the main air inlet, when the centrifugal fan is rotating normally, the air outlet is located behind the main air inlet along the rotation direction of the centrifugal fan. That is, when rotating counterclockwise, the air outlet is located above the main air inlet, and when rotating clockwise, the air outlet is located below the main air inlet. There is a congestion phenomenon at the main air inlet. By opening an air outlet at this location, the air intake efficiency can be improved.

[0084] In the above technical solution, the air intake area of ​​the auxiliary air intake is smaller than that of the main air intake.

[0085] In this technical solution, the air intake area of ​​the two air inlets is limited, with the main air inlet having a larger air intake area and the auxiliary air inlet having a smaller air intake area. This allows full utilization of the main air inlet, while also enabling concealed air intake based on the location of the main air inlet.

[0086] The above technical solution also includes: a guide member, located at one end of the housing in the axial direction; wherein, the guide member has a guide plate on the side facing the housing, and air flows into the housing through the guide plate and the recessed plate, and the angle between the guide plate and the vertical direction is 60°~90°.

[0087] In this technical solution, a guide is provided at the axial end of the head mechanism. The guide is positioned towards the housing. Under the combined action of the guide plate and the recessed plate, an air intake space is formed, and air flows into the housing through the air intake space.

[0088] The guide plate has an inclination angle of 60° to 90° relative to the vertical direction, which ensures that sufficient air can flow into the air intake space.

[0089] Furthermore, the guide can be directly used as the housing of the rotating bracket.

[0090] In the above technical solution, the angle between the tangent of the end of the guide plate away from the head mechanism and the vertical direction is less than 40°.

[0091] In this technical solution, by limiting the inlet angle of the guide plate, the angle between the tangent of the end of the guide plate away from the head mechanism and the vertical direction is limited to less than 40°, which can reduce the impact of the airflow from the auxiliary air inlet and improve the air intake efficiency.

[0092] An embodiment of the second aspect of the present invention provides a fan device, including: a floor stand, the top of which forms a guide; and any of the fan head mechanisms described in the first aspect, disposed on the floor stand.

[0093] The fan device proposed according to the present invention includes a floor stand and a fan head mechanism, wherein the floor stand supports the fan head mechanism. The fan device is shaped like a floor fan, and its air outlet height is more in line with the user's usage habits.

[0094] It should be emphasized that in this application, a guide is formed at the top of the landing support. The upward-extending end structure of the landing support can cooperate with the recessed plate on the nose mechanism, so that air flows into the nose mechanism through the position between the two.

[0095] Since the fan device includes a fan head mechanism, it has the beneficial effects of any of the fan head mechanisms described in the first aspect embodiment above, which will not be repeated here.

[0096] Fan equipment includes, but is not limited to, floor fans, tower fans, circulating fans, etc.

[0097] Furthermore, the main air inlet is located on the side of the casing closest to the floor stand, that is, on the side where the casing faces downwards, to minimize the overall appearance of the fan unit from the perspective of visibility angle, meaning that the lower side near the floor stand is not easily observed by the user.

[0098] The above technical solution also includes: a drive mechanism, at least part of which is located within the guide member. The drive mechanism includes: a first support member connected to the floor support; a rotary motor located on the first support member, with the drive end of the rotary motor connected to a second support member, and the second support member connected to the machine head mechanism.

[0099] In this technical solution, a drive mechanism can be set to drive the swing of the machine head mechanism. For example, the machine head mechanism can be driven to swing left and right, or to swing up and down. Specifically, the drive mechanism includes a first support member, a rotary motor, and a second support member. The first support member and the second support member are respectively located on both sides of the rotary motor. The first support member is used to connect to the ground support, and the second support member is used to connect to the machine head mechanism. Under the action of the rotary motor, the machine head mechanism can swing relative to the ground support.

[0100] It should be added that at least part of the drive mechanism used to drive the rotation of the head mechanism is set inside the guide member, utilizing the internal space of the guide member itself to take into account both the internal rotation drive and the air intake and guidance of the outer surface.

[0101] The above technical solution also includes: a rotating mechanism, at least part of which is located within the guide member; wherein the rotating mechanism and the driving mechanism are located on opposite sides of the head mechanism along the axial direction.

[0102] In this technical solution, a rotating mechanism is set on the floor support and placed on the other side of the head unit. The rotating mechanism mainly serves as an auxiliary support, thereby effectively supporting the rotation of the head unit under the joint action of the drive mechanism. At the same time, through relative oscillation, air can be fully circulated, improving the purification effect.

[0103] It should be added that at least part of the structure in the rotating mechanism used to cooperate with the drive mechanism is set inside the guide member, and the internal space of the guide member itself is used to take into account both the internal cooperation and rotation and the air intake and guidance of the outer surface.

[0104] Furthermore, the rotating mechanism and the driving mechanism are located on both sides of the axial direction of the head mechanism, thereby enabling pitch adjustment of the head mechanism.

[0105] It is understandable that the rotating mechanism and the drive mechanism are located inside the guide member, so that when the head mechanism is controlled to pitch and rotate, the airflow is not affected, and the surrounding air will not come into contact with the rotating mechanism on the flow path, ensuring smooth flow.

[0106] The above technical solution also includes: a rotating bracket, which includes connecting parts on both axial sides of the housing of the head mechanism, and the housing is rotatably connected to the rotating bracket through the connecting parts; wherein, the wires of the centrifugal fan are led outward through the connecting part on one side of the rotating bracket.

[0107] In this technical solution, by setting a rotating bracket, the head mechanism can achieve oscillation rotation. Specifically, the rotating bracket includes connecting parts, with two connecting parts located on both axial sides of the casing. The casing can be rotatably connected to the rotating bracket through the connecting parts, thereby enabling the head mechanism to pitch, oscillate, or swing laterally. Furthermore, since the centrifugal fan requires power, there are certain limitations on the arrangement of the wiring during rotation. This solution directly utilizes the connecting parts to extend the wiring along the connecting parts, thus leading it outwards to provide power to the centrifugal fan.

[0108] It should be noted that the rotating bracket is Y-shaped, which means that the size of the head mechanism is not greatly limited.

[0109] In the above technical solution, the main air inlet of the head unit is arranged around the rotating shaft of the rotating bracket.

[0110] In this technical solution, by restricting the auxiliary air inlet from being directly set around the rotating shaft of the rotating bracket, the first air inlet is arranged to avoid the fulcrum position, thereby reducing the impact of the fulcrum on the air intake and improving the air intake efficiency.

[0111] The above technical solution also includes: a rotating motor, which is located on a connecting part on one side of the housing. The rotating motor is connected to the housing to drive the housing to rotate relative to the rotating support.

[0112] In this technical solution, a rotating motor is installed on the connecting part on one side of the housing to drive the rotation of the housing.

[0113] In the above technical solution, the centrifugal fan specifically includes: a drive motor and an impeller connected by transmission, with the drive motor and the impeller located on opposite sides of the casing.

[0114] In this technical solution, the centrifugal fan includes a drive motor and an impeller. The drive motor can drive the impeller to rotate, thereby achieving the outward air delivery. In this solution, the positions of the rotating motor and the drive motor are restricted, limiting them to be located on opposite sides of the casing, so that the center of gravity of the entire product is close to the central axis, maintaining the stability of the structure.

[0115] The above technical solution also includes: a wire passage hole, which is located on one of the two connecting parts on the same side of the housing as the drive motor, and the wires of the centrifugal fan are led out through the wire passage hole.

[0116] In this technical solution, by setting a wire passage hole on the connection part, the wires of the centrifugal fan can be led outward. Due to the use of the wire passage hole, the wires can be led out from the inside to the outside and then connected to the controller or power supply.

[0117] The above technical solution also includes: a wire channel, which is mounted on a rotating bracket.

[0118] In this technical solution, by setting a wire passage groove on the rotating bracket, the wire can be placed in the wire passage groove. The wire passage groove provides space for the wire and achieves structural protection, so that the wire can be hidden in the wire passage groove and the circuit can be kept unobstructed.

[0119] The above technical solution also includes: a limit buckle, which is installed on the wire trough and is used to limit the wire.

[0120] In this technical solution, by setting a limit buckle on the wire guide groove, the wire can be limited to prevent it from falling into the machine head mechanism after it falls off, thus improving the safety of use.

[0121] In the above technical solution, the distance between the wire hole or wire groove and the impeller shaft on the circumferential side wall of the housing is less than 200mm.

[0122] In this technical solution, by ensuring that the distance between either the wire guide hole or the wire guide groove and the impeller shaft is within 200mm, the wire path is closer to the center, which facilitates the wire lead-out.

[0123] Additional aspects and advantages of the invention will become apparent in the following description or may be learned by practice of the invention. Attached Figure Description

[0124] Figure 1 A schematic diagram of the head mechanism according to an embodiment of the present invention is shown;

[0125] Figure 2 A schematic diagram of the structure of a centrifugal volute and impeller according to an embodiment of the present invention is shown;

[0126] Figure 3 A schematic diagram of the casing structure according to an embodiment of the present invention is shown;

[0127] Figure 4 A schematic cross-sectional view of the head mechanism according to an embodiment of the present invention is shown;

[0128] Figure 5 A schematic cross-sectional view of the head mechanism according to an embodiment of the present invention is shown;

[0129] Figure 6 A schematic diagram of the axial cross-sectional structure of the head mechanism according to an embodiment of the present invention is shown;

[0130] Figure 7 A schematic diagram of a fan device according to an embodiment of the present invention is shown;

[0131] Figure 8 A schematic diagram of a fan device according to an embodiment of the present invention is shown;

[0132] Figure 9 A schematic diagram of the structure of a rotating bracket according to an embodiment of the present invention is shown;

[0133] Figure 10 A schematic diagram of the structure of a drive mechanism according to an embodiment of the present invention is shown;

[0134] Figure 11 A schematic diagram of the head mechanism according to an embodiment of the present invention is shown.

[0135] in, Figures 1 to 11 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0136] 100: Head mechanism; 102: Housing; 1022: Air outlet; 1024: Main air inlet; 1026: Auxiliary air inlet; 1028: Second air inlet; 1032: First support cover; 1034: Second support cover; 104: Centrifugal volute; 1042: Air duct outlet; 1044: Air duct inlet; 106: Centrifugal fan; 1062: Drive motor; 1064: Impeller; 107: Air duct cover; 1072: First grille section; 1074: Second grille section; 108: Filter structure; 1102: Mounting groove; 1104: Cover grille; 112: Outer plate; 1122: External air inlet; 1124: Recessed plate; 126: First air inlet; 1132: First side plate; 1134: Second side plate;

[0137] 200: Fan device; 202: Floor stand; 204: Drive mechanism; 2042: First support member; 2046: Second support member; 206: Rotation mechanism; 208: Guide member; 2082: Guide plate; 210: Rotation bracket; 2102: Connecting part; 2104: Wire hole; 2106: Wire groove; 2108: Limit buckle; 212: Rotation motor. Detailed Implementation

[0138] To better understand the above-described objectives, features, and advantages of the embodiments of the present invention, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0139] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, embodiments of the invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0140] The following reference Figures 1 to 11 Some embodiments of the present invention are described.

[0141] like Figure 1As shown, the head unit 100 proposed in this embodiment mainly includes a housing 102 and a centrifugal fan assembly. The centrifugal fan assembly is divided into a centrifugal volute 104 and a centrifugal fan 106. By setting the centrifugal volute 104 inside the housing 102, air circulation can be achieved through the air outlet 1022 and the main air inlet 1024 on the housing 102. Since the head unit 100 of this solution uses a centrifugal fan 106 and no fan blades are exposed, the safety of use during operation is greatly increased. It should be emphasized that the air inlet and outlet of a typical centrifugal fan 106 are set at a 90-degree angle to each other, such as left and right air inlet and front air outlet. This solution, however, opens the air inlet and outlet 1022 at the same position on the casing 102 outside the centrifugal volute 104. That is, the air outlet 1022 and the main air inlet 1024 are both set on the circumferential side wall of the casing 102. During production, only the circumferential side wall of the casing 102 needs to be processed to produce the casing 102 structure with the air outlet 1022 and the main air inlet 1024. It should be noted that the main air inlet 1024 and the auxiliary air inlet 1026 are respectively located on the circumferential and axial walls of the housing 102. The motor installed inside the volute will obstruct the airflow to a certain extent, resulting in severe uneven air intake on both sides. Alternatively, when the head unit 100 is placed against a wall or in a corner, the auxiliary air inlet 1026 will be blocked by the wall, making it impossible to fully utilize the air intake area of ​​the auxiliary air inlet 1026, thereby reducing the air volume and affecting the air output effect. This application utilizes the main air inlet 1024 located in the circumferential direction of the housing 102 to meet the required air intake volume, making the air intake more uniform, and the position of the product is not affected by the environment, greatly improving the usage scenarios.

[0142] The head mechanism 100 is ring-shaped as a whole, or it can be like... Figure 1 As shown, it protrudes partially from the cylindrical base.

[0143] The air outlet 1022 and the main air inlet 1024 on the casing 102 are connected to the centrifugal volute 104 so that the centrifugal fan 106 can draw in air from the main air inlet 1024 and discharge it outward from the air outlet 1022.

[0144] It should be added that, such as Figure 2As shown, in a typical centrifugal fan 106, the air inlet and outlet are set at a 90-degree angle to each other, such as left and right air inlet and front air outlet. This design, however, creates air inlet and outlet ports 1022 at the same location on the casing 102 outside the centrifugal volute 104. That is, both the outlet 1022 and the main air inlet 1024 are located on the circumferential sidewall of the casing 102. During production, only the circumferential sidewall of the casing 102 needs to be machined to produce a casing 102 structure with both the outlet 1022 and the main air inlet 1024. It should be noted that the main air inlet 1024 and the auxiliary air inlet 1026 are respectively located on the circumferential and axial walls of the casing 102. An air duct is formed inside the centrifugal casing 104. The air duct outlet 1042 corresponds to the air outlet 1022 on the casing 102, and the air duct inlet 1044 corresponds to the auxiliary air inlet 1026 on the casing 102. When the centrifugal fan 106 rotates, air flows into the casing 102 through the main air inlet 1024 and the auxiliary air inlet 1026, then flows into the centrifugal casing 104 through the air duct inlet 1044, and then flows out through the air duct outlet 1042 and the air outlet 1022. It can be understood that part of the air flowing into the centrifugal casing 104 through the air duct inlet 1044 flows in through the main air inlet 1024, and the other part flows in through the auxiliary air inlet 1026.

[0145] The housing 102 specifically includes a separate first support cover 1032 and a second support cover 1034. After the first support cover 1032 and the second support cover 1034 are connected, the housing 102 is formed, which also forms an air outlet 1022 and a main air inlet 1024.

[0146] In one embodiment, the head unit 100 mainly includes a housing 102 and a centrifugal fan assembly. The centrifugal fan assembly is divided into a centrifugal volute 104 and a centrifugal fan 106. By setting the centrifugal volute 104 inside the housing 102, air circulation can be achieved through the air outlet 1022 and the main air inlet 1024 on the housing 102. Since the head unit 100 of this solution uses a centrifugal fan 106 and no fan blades are exposed, the safety of use during operation is greatly increased. It is important to emphasize that, in a typical centrifugal fan 106, the air inlet and outlet are set at a 90-degree angle to each other, such as left and right air inlet and front air outlet. This design, however, creates air inlet and outlet ports 1022 at the same location on the casing 102 outside the centrifugal volute 104. That is, both the outlet 1022 and the main air inlet 1024 are located on the circumferential sidewall of the casing 102. During production, only the circumferential sidewall of the casing 102 needs to be machined to produce a casing 102 structure with both the outlet 1022 and the main air inlet 1024. Based on this, the first support cover 1032 and the second support cover 1034 respectively have partial outline structures of the outlet 1022 and the main air inlet 1024.

[0147] In another embodiment, it should be emphasized that the air inlet and outlet of a typical centrifugal fan 106 are arranged at a 90-degree angle to each other, such as left and right air inlet and front air outlet. This solution, however, involves opening air inlet and outlet ports 1022 at the same location on the casing 102 outside the centrifugal volute 104. That is, both the outlet 1022 and the main air inlet 1024 are located on the circumferential sidewall of the casing 102. During production, only the circumferential sidewall of the casing 102 needs to be processed to produce a casing 102 structure with both the outlet 1022 and the main air inlet 1024. Furthermore, the outlet 1022 and the main air inlet 1024 can be simultaneously located on the first support cover 1032 or simultaneously located on the second support cover 1034.

[0148] In another embodiment, it should be emphasized that, in a typical centrifugal fan 106, the air inlet and outlet are set at a 90-degree angle to each other, such as left and right air inlet and front air outlet. This solution, however, creates air inlet and outlet ports 1022 at the same location on the casing 102 outside the centrifugal volute 104. That is, both the outlet 1022 and the main air inlet 1024 are located on the circumferential sidewall of the casing 102. During production, only the circumferential sidewall of the casing 102 needs to be processed to produce a casing 102 structure with both the outlet 1022 and the main air inlet 1024. Furthermore, one of the outlet 1022 and the main air inlet 1024 is located on the first support cover 1032, and the other is located on the second support cover 1034.

[0149] Among them, such as Figure 1 As shown, a wind hood 107 is provided on the outside of the housing 102. The wind hood 107 specifically includes a first grille 1072 and a second grille 1074, so that the air will be dispersed when passing through the first grille 1072 or the second grille 1074, thereby improving the uniformity of airflow.

[0150] It should be added that the extension direction of the second grille section 1074 is not parallel to the extension direction of the blades. This allows the airflow exiting through the air duct outlet 1042 to be dispersed by the second grille section 1074, thereby improving the uniformity of the airflow. It is understandable that if the extension direction of the blades were parallel to the extension direction of the grille of the second grille section 1074, it would obstruct the direction of the airflow, resulting in air volume loss.

[0151] Furthermore, looking from the air outlet 1022, the blades extend horizontally, and the extension direction of the grille can be vertical or inclined, as long as there is a certain angle with the horizontal direction.

[0152] More specifically, the relative positional relationship between the extension direction of the blades and the extension direction of the grille is perpendicular, thereby minimizing the obstruction to the airflow and ensuring the air volume.

[0153] In addition, the distance between the air duct outlet 1042 and the volute is limited, so that air can maintain a high wind speed in a relatively short air duct, thereby achieving a longer air supply distance and improving the air circulation in the environment where the product is located. Specifically, on the cross-section of the impeller 1064, the lateral distance between the position of the air duct outlet 1042 and the volute tongue part on the centrifugal volute 104 needs to be less than 0.5 times the diameter of the impeller 1064, that is, in the direction perpendicular to the vertical direction, the distance between the air duct outlet 1042 and the volute tongue < 0.5 × impeller diameter.

[0154] It can be understood that the position of the volute tongue is the minimum clearance between the impeller and the volute.

[0155] In a specific embodiment, the dimensions between the impeller 1064 in the centrifugal fan 106 and the volute air outlet 1022 are limited. It is specified that the distance between the air duct outlet 1042 and the axis of the impeller 1064 in the lateral direction is 0.7 to 1.3 times the diameter of the impeller 1064, which can make the wind speed attenuation at the air duct outlet 1042 less and the outward wind speed larger, improving the circulation effect. It should be emphasized that generally, the air inlet and outlet of the centrifugal fan 106 are arranged at 90 degrees to each other, such as left and right air inlet, front air outlet, etc. In this solution, the air inlet and outlet 1022 at the same position are opened on the casing 102 outside the centrifugal volute 104, that is, the air outlet 1022 and the main air inlet 1024 are both arranged on the circumferential side wall of the casing 102. During production, only the circumferential side wall of the casing 102 needs to be processed to produce the casing 102 structure with the air outlet 1022 and the main air inlet 1024. It should be added that the main air inlet 1024 and the auxiliary air inlet 1026 are respectively arranged on the circumferential and axial wall surfaces of the casing 102.

[0156] In this embodiment, the shape of the air duct outlet 1042 is also limited, such as Figure 5 shown, in the direction roughly from top to bottom, the distance Ln between the air duct outlet 1042 and the plane gradually becomes longer, that is, Ln1 < Ln2 < Ln3. The air duct outlet 1042 extends and transitions from top to bottom as a whole. On this basis, the reference plane is determined as the plane passing through the volute tongue in the centrifugal volute and the end of the air duct outlet far from the volute tongue. By limiting the distance between the air duct outlet and the plane, specifically, from the end of the air duct outlet far from the volute tongue to the end of the air duct outlet close to the volute tongue, the vertical distance between the air duct outlet and the plane gradually increases, thereby improving the air outlet uniformity. It can be understood that since the traditional form of the air outlet has more air output at the top, by adjusting the position of the grille and increasing the length of the bottom air duct, the air output at the bottom is increased, thus achieving the effect of uniform air output in the up and down directions.

[0157] Furthermore, the head unit 100 mainly includes a housing 102 and a centrifugal fan assembly. The centrifugal fan assembly is divided into a centrifugal volute 104 and a centrifugal fan 106. By setting the centrifugal volute 104 inside the housing 102, air circulation can be achieved through the air outlet 1022 and the main air inlet 1024 on the housing 102. Since the head unit 100 of this solution uses a centrifugal fan 106 and no fan blades are exposed, the safety of use during operation is greatly increased. It is important to emphasize that, in typical centrifugal fans 106, the air inlet and outlet are set at a 90-degree angle to each other, such as left and right air inlets and front air outlets. This design, however, creates air inlet and outlet ports 1022 at the same location on the casing 102 outside the centrifugal volute 104. That is, both the outlet 1022 and the main air inlet 1024 are located on the circumferential sidewall of the casing 102. During production, only the circumferential sidewall of the casing 102 needs to be machined to produce a casing 102 structure with both the outlet 1022 and the main air inlet 1024. The shape of the duct outlet 1042 is defined; its outline on the cross-section of the centrifugal fan 106 is convex, which increases the airflow at the bottom of the duct outlet 1042.

[0158] Furthermore, the curvature of the profile of the air duct outlet 1042 is monotonically changing.

[0159] In one embodiment, the air inlet and outlet of a typical centrifugal fan 106 are arranged at a 90-degree angle to each other, such as left and right air inlet and front air outlet. This solution addresses this by creating air inlet and outlet ports 1022 at the same location on the casing 102 outside the centrifugal volute 104. That is, both the outlet 1022 and the main air inlet 1024 are located on the circumferential sidewall of the casing 102. During production, only the circumferential sidewall of the casing 102 needs to be machined to produce a casing 102 structure with both the outlet 1022 and the main air inlet 1024. The curvature of the air duct outlet 1042's profile is less at the top than at the bottom.

[0160] In another embodiment, it should be emphasized that, in a typical centrifugal fan 106, the air inlet and outlet are set at a 90-degree angle to each other, such as left and right air inlet and front air outlet. This solution, however, creates air inlet and outlet ports 1022 at the same location on the casing 102 outside the centrifugal volute 104. That is, both the outlet 1022 and the main air inlet 1024 are located on the circumferential sidewall of the casing 102. During production, only the circumferential sidewall of the casing 102 needs to be processed to produce a casing 102 structure with both the outlet 1022 and the main air inlet 1024. The curvature of the air duct outlet 1042's profile is less at the bottom than at the top.

[0161] A filter structure 108 is provided at at least one of the main air inlet 1024 and the auxiliary air inlet 1026, which can optimize the filtration of indoor air quality during fan operation, thereby making the blown air cleaner and improving the user experience.

[0162] Furthermore, the filter structure 108 can be a HEPA filter, which can filter out small particulate impurities and some harmful substances in the air.

[0163] In one embodiment, a filter structure 108 is provided only at the main air inlet 1024. The filter structure 108 can be provided on the inner side of the main air inlet 1024 or on the outer side of the main air inlet 1024.

[0164] In another embodiment, a filter structure 108 is provided only at the outlet of the auxiliary air inlet 1026. The filter structure 108 can be provided on the inner side of the auxiliary air inlet 1026 or on the outer side of the auxiliary air inlet 1026.

[0165] In another embodiment, filter structures 108 are provided at both the main air inlet 1024 and the auxiliary air inlet 1026.

[0166] It is understandable that the filter structure 108 is positioned on the outside of the air hood 107 to facilitate replacement when needed. It is also understandable that the filter structure 108 is a consumable component; after a period of product operation, a significant amount of filtered dust will accumulate on it, necessitating replacement. This solution addresses this by positioning the filter structure 108 on the outside of the air hood 107, corresponding to the main air inlet 1024, making replacement more convenient for the user.

[0167] Based on any of the above embodiments, an installation groove 1102 is provided on the air hood 107. The installation groove 1102 is located on the circumferential side wall of the air hood 107, corresponding to the main air inlet 1024. Specifically, it is located on the radial outer side of the main air inlet 1024. On this basis, a cover plate grille 1104 is provided. The cover plate grille 1104 is also grille-shaped, allowing air to circulate normally. This allows the filter structure 108 to be limited and fixed. At the same time, since the cover plate grille 1104 and the installation groove 1102 are detachably connected, it is also convenient to replace the filter structure 108.

[0168] It is understood that the detachable connection between the cover plate grille 1104 and the mounting groove 1102 includes, but is not limited to, snap-fit, threaded connection, magnetic connection, etc.

[0169] Furthermore, an outer plate 112 is provided axially outward of the casing 102, which can initially disperse the incoming air, thereby making the airflow more uniform. Specifically, an external air inlet 1122 is provided on the outer plate 112. The external air inlet 1122 is arranged in a perforated manner. When the centrifugal fan 106 is running, air will flow in through the external air inlet 1122 and will also flow into the centrifugal fan 106 through the auxiliary air inlet 1026, thereby completing the air intake.

[0170] It can be understood that the position of the external air inlet 1122 corresponds to the position of the auxiliary air inlet 1026. The specific correspondence includes, but is not limited to, the external air inlet 1122 and the auxiliary air inlet 1026 being spaced apart in the axial direction.

[0171] Furthermore, the first air inlet 126 is arranged in a circular array, so that air can flow in from all directions around the head mechanism 100 through the first air inlet 126.

[0172] In a specific embodiment, such as Figure 11 As shown, there are two outer panels 112, specifically a first side panel 1132 and a second side panel 1134. Specifically, by setting two side panels outside the two support covers, that is, setting the first side panel 1132 outside the first support cover 1032 and setting the second side panel 1134 outside the second support cover 1034, and setting corresponding external air inlets 1122 on the two side panels, air can flow from the external air inlets 1122 on the two side panels into the auxiliary air inlet 1026 on the housing 102, thereby completing the air intake.

[0173] Specifically, the diameter of the first air inlet 126 is limited, gradually decreasing from the inside to the outside in the radial direction, with a larger diameter on the inner side and a smaller diameter on the outer side. On the one hand, by using first air inlets 126 with different diameters, the frequencies of each noise source are varied, avoiding the occurrence of fundamental frequency superposition, which can effectively reduce noise. On the other hand, the smaller diameter of the outer first air inlet 126 results in less air intake, while the larger diameter of the inner first air inlet 126 results in more air intake, thereby making the air intake velocity at each radius position as consistent as possible and improving air intake uniformity.

[0174] Furthermore, the diameter of the first air inlet hole 126 on the outer panel 112, which is located at the same radius, is limited. The diameter of the holes at the same radius is the same, which facilitates processing on the one hand, and on the other hand, the airflow is more uniform when the air flows to the same radius and enters through the first air inlet hole 126.

[0175] It is understandable that the center of the circle with the same radius is the axis around which the first air inlet 126 rotates during the circular array, which is generally the shaft of the centrifugal fan 106.

[0176] In one specific embodiment, the outer panel 112 is recessed, and a first air inlet hole 126 is provided on the recessed plate 1124, which can effectively reduce the impact of air when the air is introduced under negative pressure. The recessed plate 1124 can play a certain guiding effect on the air. At the same time, by utilizing the Coanda effect, the air tends to flow along the wall, thereby improving the air intake efficiency.

[0177] The recessed plate 1124 is recessed inward, that is, it is recessed towards the centrifugal volute 104. The recessed plate 1124 is curved, so the air flows more smoothly into the first air inlet 126 along the surface of the recessed plate 1124. The curved structure can effectively improve the air guiding effect and improve the air intake efficiency without increasing the wind resistance.

[0178] like Figure 6 As shown, the angle c between the outer wall of the recessed plate 1124 and the vertical direction is restricted to less than 30 degrees. The recessed angle of the recessed plate 1124 is small, the air direction is relatively smooth, reducing the possibility of noise, and at the same time making the guiding effect more obvious, which can take into account both the spatial arrangement of the structure and the air guiding effect.

[0179] like Figure 3 As shown, the auxiliary air inlet 1026 on the housing 102 has a hole-like structure, which includes multiple circumferential arrays of second air inlets 1028. Under the action of the second air inlets 1028, when the air flows from the outer air inlet 1122 to the auxiliary air inlet 1026, the air can be dispersed a second time, and the air flowing into the centrifugal volute 104 is more sufficient and uniform.

[0180] Furthermore, the second air inlet 1028 is arranged in a circular array, so that after the air flows into the space between the outer air inlet 1122 and the auxiliary air inlet 1026 through the first air inlet 126, air from all directions can flow in through the second air inlet 1028.

[0181] Furthermore, each first air inlet 126 is provided with a corresponding second air inlet 1028.

[0182] Alternatively, the first air inlet 126 and the second air inlet 1028 can be misaligned.

[0183] In one specific embodiment, the diameter of the second air inlet 1028 is limited, and the diameter of each second air inlet 1028 is the same, which is convenient for processing. After being dispersed by the first air inlet 126, the difference in air volume at each radius is small. Therefore, the air volume can be guaranteed even if the diameter of the second air inlet 1028 on the inner side is not changed.

[0184] In another specific embodiment, the diameter gradually decreases from the inside to the outside in the radial direction, with the inner diameter being larger and the outer diameter being smaller. On the one hand, by using second air inlets 1028 with different diameters, the frequencies of each noise source are varied, avoiding the occurrence of fundamental frequency superposition and effectively reducing noise. On the other hand, the outer second air inlet 1028 has a smaller diameter and less air intake, while the inner second air inlet 1028 has a larger diameter and more air intake, thereby making the air intake velocity at each radius position as consistent as possible and improving air intake uniformity.

[0185] Based on any of the above embodiments, an auxiliary air inlet 1026 is provided on each end face of the housing 102, i.e., on the axial wall surface, which can increase the air intake of the centrifugal fan 106. It can be understood that, based on the main air inlet 1024, two additional auxiliary air inlets 1026 are provided. When air is intake, air will enter from three directions of the housing 102, which is more convenient to meet the needs of large air volume use.

[0186] It is understandable that the auxiliary air inlet 1026 needs to be connected to the centrifugal volute 104 in order to facilitate air intake.

[0187] In this embodiment, since the main air inlet 1024 and the air outlet 1022 are both arranged along the circumference of the housing 102, the effect of supplementing the intake air volume can be achieved.

[0188] Specifically, the angle b between the straight line of the end of the air outlet 1022 near the main air inlet 1024 relative to the axis of rotation of the centrifugal fan 106 and the straight line of the end of the air inlet near the air outlet 1022 relative to the axis of rotation of the centrifugal fan 106 is not less than 30 degrees. This ensures that there is a certain gap between the main air inlet 1024 and the air outlet 1022, so that the air flowing out of the air outlet 1022 will not directly return to the main air inlet 1024, thus ensuring the air supply effect.

[0189] like Figure 4 As shown, the furthest position of the main air inlet 1024 from the air outlet 1022 is limited, that is, the angle α between the end of the air outlet 1022 close to the main air inlet 1024 and the end of the main air inlet 1024 far from the air outlet 1022 relative to the rotation axis of the centrifugal fan 106 is not greater than 150 degrees, so as to make full use of the position with the highest air intake efficiency in the centrifugal volute 104 to improve the air intake efficiency.

[0190] By restricting the circumferential position of the main air inlet 1024, limiting the central angles at both ends to 100° to 130°, the overall air intake resistance can be reduced, making full use of the air at the bottom position and greatly increasing the air intake volume. On the other hand, the main air inlet 1024 is limited to prevent it from being too large, thus ensuring the position of the air outlet 1022 and the air delivery distance.

[0191] In one specific embodiment, the relative positions of the air outlet 1022 and the main air inlet 1024 are restricted. When the centrifugal fan 106 is rotating normally, along the rotation direction of the centrifugal fan 106, the air outlet 1022 is located behind the main air inlet 1024. That is, when rotating counterclockwise, the air outlet 1022 is located above the main air inlet 1024, and when rotating clockwise, the air outlet 1022 is located below the main air inlet 1024. There is a congestion phenomenon at the main air inlet 1024. By opening the air outlet 1022 at this location, the air intake efficiency can be improved.

[0192] In one specific embodiment, the air intake area of ​​the two air inlets is limited, with the main air intake 1024 having a larger air intake area and the auxiliary air intake 1026 having a smaller air intake area. This allows full utilization of the main air intake 1024, and also enables concealed air intake based on the position of the main air intake 1024.

[0193] like Figure 7 As shown, this embodiment proposes a fan device 200, including a floor stand 202 and a fan head mechanism 100. The floor stand 202 can support the fan head mechanism 100. The fan device 200 is shaped like a floor fan, and the air outlet height is more in line with the user's usage habits.

[0194] It should be emphasized that in this application, a guide is formed at the top of the landing support. The upward-extending end structure of the landing support can cooperate with the recessed plate on the nose mechanism, so that air flows into the nose mechanism through the position between the two.

[0195] Since the fan device 200 includes a head mechanism 100, it has the beneficial effects of any of the head mechanisms 100 in the first aspect embodiment described above, which will not be repeated here.

[0196] Fan equipment 200 includes, but is not limited to, floor fans, tower fans, circulating fans, and other similar equipment.

[0197] Furthermore, the main air inlet 1024 is located on the side of the housing 102 near the floor bracket 202, that is, on the side of the housing 102 facing downwards, to minimize the overall appearance of the fan device 200 from the perspective of visibility, that is, the lower side near the floor bracket 202 is not easily observed by the user.

[0198] In addition, such as Figure 8 As shown, by setting the drive mechanism 204, the swing of the head mechanism 100 can be driven. For example, the head mechanism 100 can be driven to swing left and right, or to swing pitch. Specifically, as... Figure 10As shown, the drive mechanism 204 includes a first support member 2042, a rotary motor 212, and a second support member 2046. The first support member 2042 and the second support member 2046 are respectively disposed on both sides of the rotary motor 212. The first support member 2042 is used to connect to the floor support 202, and the second support member 2046 is used to connect to the machine head mechanism 100. Under the action of the rotary motor 212, the machine head mechanism 100 can swing relative to the floor support 202.

[0199] It should be added that at least part of the drive mechanism used to drive the rotation of the head mechanism is set inside the guide member, utilizing the internal space of the guide member itself to take into account both the internal rotation drive and the air intake and guidance of the outer surface.

[0200] A rotating mechanism 206 is installed on the floor support 202 and is located on the other side of the head unit 100. The rotating mechanism 206 mainly serves as an auxiliary support, thereby effectively supporting the rotation of the head unit 100 under the joint action of the drive mechanism 204. At the same time, through relative oscillation, air can be fully circulated, improving the purification effect.

[0201] It should be added that at least part of the structure in the rotating mechanism used to cooperate with the drive mechanism is set inside the guide member, and the internal space of the guide member itself is used to take into account both the internal cooperation and rotation and the air intake and guidance of the outer surface.

[0202] It should be added that at least part of the structure in the rotating mechanism used to cooperate with the drive mechanism is set inside the guide member, and the internal space of the guide member itself is used to take into account both the internal cooperation and rotation and the air intake and guidance of the outer surface.

[0203] Furthermore, the rotating mechanism 206 and the driving mechanism 204 are arranged on both sides of the axial direction of the head mechanism 100, thereby realizing the pitch adjustment of the head mechanism 100.

[0204] In another embodiment, such as Figure 6 As shown, a guide member 208 is provided at both ends of the axial direction of the head mechanism 100. Since the guide member 208 is provided with a guide plate 2082, an air intake space will be formed under the combined action of the guide plate 2082 and the recessed plate 1124, and air will flow into the housing 102 through the air intake space.

[0205] The guide plate 2082 has an inclination angle d of 60°~90° relative to the vertical direction, which ensures that sufficient air can flow into the air intake space.

[0206] Furthermore, the guide member 208 can be directly mounted on the rotating bracket 210.

[0207] Among them, the inlet angle of the guide plate 2082 is restricted, and the angle e between the tangent of the end of the guide plate 2082 away from the head mechanism 100 and the vertical direction is limited to less than 40°, which can reduce the impact of the incoming flow from the auxiliary air inlet 1026 and improve the air intake efficiency.

[0208] In one specific embodiment, a rotating bracket 210 is provided, enabling the head mechanism 100 to rotate in a yaw motion. Specifically, the rotating bracket 210 includes connecting portions 2102, with two connecting portions 2102 disposed on both axial sides of the housing 102. The housing 102 can be rotatably connected to the rotating bracket 210 via the connecting portions 2102, thereby enabling the head mechanism 100 to pitch, yaw, or oscillate laterally. Furthermore, since the centrifugal fan 106 requires power, there are certain limitations on the arrangement of the wiring during rotation. This solution directly utilizes the connecting portions 2102, extending the wiring along the connecting portions 2102 to provide power to the centrifugal fan 106.

[0209] It should be noted that the rotating bracket 210 is Y-shaped, which means that the size of the head mechanism 100 is not greatly limited.

[0210] The auxiliary air inlet 1026 is set directly around the rotating shaft of the rotating bracket 210, that is, the first air inlet 126 will avoid the fulcrum position when it is arranged, thereby reducing the influence of the fulcrum on the air intake and improving the air intake efficiency.

[0211] A rotating motor 212 is installed on the connecting part 2102 on one side of the housing 102 to drive the rotation of the housing 102.

[0212] The centrifugal fan 106 includes a drive motor 1062 and an impeller 1064. The drive motor 1062 can drive the impeller 1064 to rotate, thereby achieving the outward air delivery. In this solution, the positions of the rotating motor 212 and the drive motor 1062 are restricted, limiting them to be located on opposite sides of the casing 102, so that the center of gravity of the entire product is close to the central axis, maintaining the stability of the structure.

[0213] In one embodiment, such as Figure 9 As shown, a wire hole 2104 is provided on the connecting part 2102, which allows the wires of the centrifugal fan 106 to be led outward. Since the wire hole 2104 is used, the wires can be led out from the inside to the outside and then connected to the controller or power supply.

[0214] In another embodiment, a wire passage groove 2106 is provided on the rotating bracket 210, in which wires can be placed. The wire passage groove 2106 provides space for the wires and provides structural protection, so that the wires can be hidden in the wire passage groove 2106 to ensure the smooth flow of the circuit.

[0215] Furthermore, a limit buckle 2108 is provided on the wire guide 2106 to limit the wire and prevent it from falling into the machine head mechanism 100 after it falls off, thereby improving the safety of use.

[0216] More specifically, if the distance between either the wire hole 2104 or the wire groove 2106 and the shaft of the impeller 1064 is within 200mm, the path of the wire is closer to the center to facilitate the wire's exit.

[0217] According to the head unit and fan device provided by the present invention, by setting the main air inlet on the circumferential side wall, a large flow of air can still be guaranteed even when the auxiliary air inlet on one side of the head unit is blocked, thus making the product applicable to a wider range of locations.

[0218] In this invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0219] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or unit 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 this invention.

[0220] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0221] The above are merely preferred embodiments of the present invention and are not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A fan device, characterized in that, include: A floor stand, the top of which forms a guide; The machine head mechanism is mounted on the ground support; A drive mechanism, at least a portion of which is disposed within the guide member, the drive mechanism comprising: a first support member connected to the floor support; a rotary motor disposed on the first support member, the drive end of which is connected to a second support member, the second support member being connected to the machine head mechanism; and / or A rotating mechanism, at least a portion of which is disposed within the guide member; The rotating mechanism and the driving mechanism are located on opposite sides of the head mechanism along the axial direction; The head mechanism includes: The housing has a main air inlet and an air outlet on its circumferential sidewalls, and an auxiliary air inlet on its axial wall surface. A centrifugal volute is disposed inside the housing, and a centrifugal fan is provided inside the centrifugal volute. The centrifugal volute is provided with an air duct outlet corresponding to the air outlet and an air duct inlet corresponding to the auxiliary air inlet. The air flowing in from the main air inlet and the auxiliary air inlet flows into the centrifugal volute through the air duct inlet; The air intake area of ​​the auxiliary air intake is smaller than that of the main air intake.

2. The fan device according to claim 1, characterized in that, The housing specifically includes: A first support cover and a second support cover are connected to form the air outlet and the main air inlet; The auxiliary air inlet is located on the axial wall surface of the first support cover and / or the axial wall surface of the second support cover.

3. The fan device according to claim 2, characterized in that, Also includes: An air duct is fitted onto the outside of the housing, and the air duct is provided with a first grille section corresponding to the main air inlet and / or a second grille section corresponding to the air outlet.

4. The fan device according to claim 3, characterized in that, The extension direction of the blades in the centrifugal impeller is not parallel to the extension direction of the grid in the second grid section.

5. The fan device according to claim 4, characterized in that, The extension direction of the blades in the centrifugal impeller is perpendicular to the extension direction of the grid in the second grid section.

6. The fan device according to claim 3, characterized in that, In the centrifugal fan, on the cross-section of the impeller, the distance between the air duct outlet and the volute tongue of the centrifugal volute in the vertical direction is less than 0.5 times the diameter of the impeller.

7. The fan device according to claim 3, characterized in that, In the centrifugal fan, the distance between the impeller shaft and the air duct outlet in the vertical direction on the cross-section of the impeller is 0.7 to 1.3 times the impeller diameter.

8. The fan device according to claim 3, characterized in that, On the plane passing through the centrifugal volute and the end of the air duct outlet away from the volute tongue, the vertical distance between the air duct outlet and the plane gradually increases from the end of the air duct outlet away from the volute tongue to the end of the air duct outlet close to the volute tongue.

9. The fan device according to claim 3, characterized in that, On the cross-section of the centrifugal fan, the profile of the air duct outlet is convex.

10. The fan device according to claim 1, characterized in that, Also includes: The filter structure is configured to correspond to the main air inlet and / or the auxiliary air inlet.

11. The fan device according to claim 10, characterized in that, The outer side of the housing is provided with a vent shroud, and the vent shroud is provided with a first grille portion corresponding to the main air inlet. The filter structure is provided on the outer side of the vent shroud, corresponding to the first grille portion.

12. The fan device according to claim 11, characterized in that, The circumferential sidewall of the air duct is provided with a mounting groove corresponding to the main air inlet, and further includes: The cover plate grid is detachably connected to the mounting groove, and the filter structure is disposed between the cover plate grid and the mounting groove.

13. The fan device according to claim 11, characterized in that, Also includes: An outer panel is provided on one side of the housing along the axial direction, and an external air inlet is provided on the outer panel corresponding to the auxiliary air inlet; Specifically, the external air inlet includes a plurality of first air inlets arranged in a circular array.

14. The fan device according to claim 13, characterized in that, The outer panel specifically includes: The first side plate is located on the side of the first support cover away from the second support cover; The second side plate is located on the side of the second support cover away from the first support cover; The first side plate and the second side plate are provided with external air inlets corresponding to the auxiliary air inlets.

15. The fan device according to claim 14, characterized in that, The first side plate is snapped together with the vent hood; and / or The second side plate is snapped together with the hood.

16. The fan device according to claim 13, characterized in that, In the radial direction, the diameter of the first air inlet gradually decreases from the inside to the outside.

17. The fan device according to claim 13, characterized in that, The diameters of the multiple first air inlets located on the outer plate at the same radius are the same.

18. The fan device according to claim 13, characterized in that, The outer panel includes a recessed plate, and the first air inlet is disposed on the recessed plate.

19. The fan device according to claim 18, characterized in that, The recessed plate is recessed toward the centrifugal volute, and the outer wall surface of the recessed plate is curved in the cross section passing through the shaft of the centrifugal fan.

20. The fan device according to claim 18, characterized in that, On the cross-section through the shaft of the centrifugal fan, the angle between the outer wall of the recessed plate and the vertical direction is no greater than 30°.

21. The fan device according to claim 2, characterized in that, The auxiliary air inlet specifically includes a plurality of second air inlets arranged in a circular array.

22. The fan device according to claim 21, characterized in that, The second air inlet has the same diameter.

23. The fan device according to claim 21, characterized in that, In the radial direction, the diameter of the second air inlet gradually decreases from the inside to the outside.

24. The fan device according to claim 1, characterized in that, The auxiliary air inlets are respectively provided on the axial wall surfaces at both ends of the casing along the axial direction.

25. The fan device according to claim 1, characterized in that, The main air inlet and the air outlet are arranged circumferentially around the casing, and the angle between the end of the air outlet near the main air inlet and the end of the main air inlet near the air outlet relative to the rotation axis of the centrifugal fan is not less than 30 degrees.

26. The fan device according to claim 1, characterized in that, The angle between the end of the air outlet near the main air inlet and the end of the main air inlet away from the air outlet relative to the rotation axis of the centrifugal fan is no greater than 150 degrees.

27. The fan device according to claim 1, characterized in that, The angle between the two ends of the main air inlet and the axis of rotation of the centrifugal fan is 100 degrees to 130 degrees.

28. The fan device according to claim 1, characterized in that, Along the rotation direction of the centrifugal fan, the air outlet is located behind the main air inlet.

29. The fan device according to claim 18, characterized in that, Also includes: A guide member is provided at one end of the housing in the axial direction; The guide member has a guide plate on the side facing the housing. Air flows into the housing through the guide plate and the recessed plate. The angle between the guide plate and the vertical direction is 60°~90°.

30. The fan device according to claim 29, characterized in that, The angle between the tangent of the end of the guide plate away from the head mechanism and the vertical direction is less than 40°.

31. The fan device according to claim 1, characterized in that, Also includes: The rotating shaft of the rotating mechanism and / or the driving mechanism is located at the center of the recessed plate in the head mechanism; the first air inlet of the head mechanism and / or the driving mechanism is arranged around the rotating shaft of the rotating mechanism.

32. The fan device according to claim 1, characterized in that, Also includes: A rotating bracket, the rotating bracket including connecting parts on both axial sides of the housing of the machine head mechanism, the housing being rotatably connected to the rotating bracket through the connecting parts; The centrifugal fan's wires are led outward through a connection on one side of the rotating bracket.

33. The fan device according to claim 32, characterized in that, The main air inlet of the machine head mechanism is arranged around the rotating shaft of the rotating bracket.

34. The fan device according to claim 32, characterized in that, Also includes: A rotating motor is located on a connecting part on one side of the housing. The rotating motor is connected to the housing to drive the housing to rotate relative to the rotating support.

35. The fan device according to claim 34, characterized in that, The centrifugal fan specifically includes a drive motor and an impeller connected by a transmission, with the drive motor and the impeller located on opposite sides of the casing.

36. The fan device according to claim 35, characterized in that, Also includes: A wire passage hole is provided on one of the two connecting parts, which is located on the same side of the housing as the drive motor. The wires of the centrifugal fan are led outward through the wire passage hole. and / or The wire groove is located on the rotating bracket.

37. The fan device according to claim 36, characterized in that, Also includes: A limiting buckle is provided on the wire groove, and the limiting buckle is used to restrict the wire.

38. The fan device according to claim 36, characterized in that, On the circumferential sidewall of the housing, the distance between the wire-passing hole or the wire-passing groove and the shaft of the impeller is less than 200mm.

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