Fan and electronic equipment

Abstract

The utility model discloses a fan and electronic equipment, and the fan comprises a central part which can rotate along the axis of the central part; the blade is provided with a first end connected with the central component and a second end opposite to the first end, the thickness of the second end is larger than that of the first end, and the thickness of the blade is the size of the blade in the axial direction of the central component.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fan equipment, and in particular to a fan and an electronic device. BACKGROUND

[0002] Generally, a fan is used to dissipate heat of an electronic device. As the power consumption of the electronic device increases, the heat dissipation requirement of the electronic device also increases, and the heat dissipation capacity requirement of the fan also increases. Increasing the heat dissipation capacity of the fan will also increase the noise generated by the fan. CONTENT

[0003] Therefore, the present application provides a fan to improve heat dissipation effect and reduce noise. The present application also discloses an electronic device with the fan.

[0004] To achieve the above object, the present application provides the following technical solutions:

[0005] A fan comprises:

[0006] a central component capable of rotating along an axis thereof;

[0007] at least one blade having a first end connected to the central component and a second end opposite to the first end, the thickness of the second end being greater than the thickness of the first end, and the thickness of the blade being a dimension of the blade along an axial direction of the central component.

[0008] Optionally, in the fan, the blade has opposite windward and leeward surfaces, the windward surface is used to provide a pushing force to fluid,

[0009] the blade has a first portion and a second portion arranged along a first direction, the first direction being a direction from the first end to the second end;

[0010] wherein the second portion has a curved portion protruding towards a direction in which the leeward surface faces.

[0011] Optionally, in the fan, at least one of the following combinations is selected:

[0012] the first portion has a first portion surface located on the windward surface, the first portion surface is an arc surface structure and protrudes towards the windward surface of the blade;

[0013] the second portion has a second portion surface located on the windward surface, the second portion surface is an arc surface structure and protrudes towards the leeward surface of the blade.

[0014] Optionally, in the fan, the second end has a first end portion and a second end portion, the first end portion is away from the central component, and the second end portion is away from the central component, in a first direction, the first end portion is a first distance from the first end, and the second end portion is a second distance from the first end, the second distance is different from the first distance; the first direction is from the first end to the second end.

[0015] In the process of rotating the central component and driving the blade to move, the blade drives the fluid to flow in the first direction relative to the windward surface of the blade, and the first end portion and the second end portion have different effects on the fluid.

[0016] Optionally, in the fan, the first distance is greater than the second distance.

[0017] The first end portion can increase the speed of the first fluid portion corresponding thereto away from the blade, so that the large vortex generated by the blade is broken into small vortexes; and the second end portion can concentrate the second fluid portion corresponding thereto to increase the flow rate.

[0018] Optionally, in the fan, one is selected from the following combinations:

[0019] The end surface of the second end is a concave-convex surface, and the outer convex region of the concave-convex surface corresponds to the first end portion;

[0020] The end surface of the second end is a concave surface recessed toward the first end, and the two side regions of the concave surface correspond to the first end portion;

[0021] Or, the end surface of the second end is a convex surface protruding away from the first end, and the protruding region of the convex surface corresponds to the first end portion.

[0022] Optionally, in the fan, the blade has a first side surface and a second side surface opposite to each other, and the first side surface and the second side surface are arranged along the axial direction of the central component.

[0023] The first side surface has a first region, a second region and a third region arranged in a first direction and connected in sequence, the first direction is from the first end to the second end, and the distance between the first region and the second side surface is less than the distance between the third region and the second side surface.

[0024] Optionally, in the fan, at least one is selected from the following combinations:

[0025] The plane where the first region is located is parallel to the second side surface.

[0026] The plane where the third region is located is parallel to the second side surface.

[0027] The second region is arranged at an angle with the second side surface.

[0028] Optionally, in the fan as described above, the fan further comprises a reinforcing member connecting the third regions of the at least two blades.

[0029] Optionally, in the fan as described above, the fan further comprises a fan housing, and the central component and the blades are located in an inner cavity of the fan housing.

[0030] The fan housing comprises a first plate and a second plate arranged along an axial direction of the central component, and the blades are located between the first plate and the second plate.

[0031] The first plate comprises a first outwardly convex region corresponding to the second ends of the blades and convex away from the second plate, and a first groove structure capable of accommodating part of the second ends of the blades is formed on one side of the first outwardly convex region facing the blades; and / or,

[0032] The second plate comprises a second outwardly convex region corresponding to the second ends of the blades and convex away from the first plate, and a second groove structure capable of accommodating part of the second ends of the blades is formed on one side of the second outwardly convex region facing the blades.

[0033] Optionally, in the fan as described above, the first outwardly convex region and / or the second outwardly convex region is in the form of a ring structure, and an axis of the ring structure coincides with an axis of the central component.

[0034] The first plate and / or the second plate are located in an area within the ring structure, and the area is an air inlet area of the fan housing.

[0035] Optionally, in the fan as described above, the first plate comprises a first outlet region convex away from the second plate, a third groove structure is formed on one side of the first outlet region facing the blades, the third groove structure is in communication with the first groove structure formed by the first outwardly convex region of the first plate, and the third groove structure is an inner wall of an air outlet of the fan housing; and / or,

[0036] The second plate comprises a second outlet region convex away from the first plate, a fourth groove structure is formed on one side of the second outlet region facing the blades, the fourth groove structure is in communication with the second groove structure formed by the second outwardly convex region of the second plate, and the fourth groove structure is an inner wall of an air outlet of the fan housing.

[0037] The utility model further provides an electronic equipment, including heat component, still include the fan for the heat component is carried out heat dissipation;

[0038] The fan comprises:

[0039] a central component, the central component being rotatable along its axis;

[0040] at least one blade having a first end connected to the central component and a second end opposite to the first end, the second end having a thickness greater than that of the first end, the thickness of the blade being a dimension of the blade along the axis of the central component. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0042] Figure 1 An exploded structural schematic diagram of a fan provided by the embodiments of the present application;

[0043] Figure 2 A sectional structural schematic diagram of a fan provided by the embodiments of the present application;

[0044] Figure 3 A first structural schematic diagram of a fan blade structure provided by the embodiments of the present application;

[0045] Figure 4 A front view structural schematic diagram of a fan blade structure provided by the embodiments of the present application;

[0046] Figure 5 A second structural schematic diagram of a fan blade structure provided by the embodiments of the present application;

[0047] Figure 6 A sectional structural diagram of a fan blade structure provided by the embodiments of the present application;

[0048] Figure 7 A structural schematic diagram of a blade;

[0049] Figure 8 A first structural schematic diagram of a blade provided by the embodiments of the present application;

[0050] Figure 9 A second structural schematic diagram of a blade provided by the embodiments of the present application;

[0051] Figure 10 A third structural schematic diagram of a blade provided by the embodiments of the present application;

[0052] Figure 11 A fourth structural schematic diagram of a blade provided by the embodiments of the present application. DETAILED DESCRIPTION

[0053] The application discloses a fan to improve heat dissipation effect and reduce noise. The application also discloses an electronic device with the fan.

[0054] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the application.

[0055] The fan applied in the electronic device is usually a centrifugal fan. Air flows into the rotating channel formed by the fan blade structure in the axial direction, and is thrown to the outer edge of the fan blade structure under the action of centrifugal force, and is discharged from the air outlet.

[0056] In order to increase the heat dissipation capacity of the fan, the air flow can be increased. Increasing the air flow can increase the windward area of the blade, thereby increasing the air flow through the rotating channel of the fan blade. Figure 5 The increase of the windward area of the blade can include increasing the length of the blade to increase the windward area of the blade. However, the increase of the length of the blade will increase the diameter of the fan, thereby increasing the layout difficulty of the fan in the electronic device. The increase of the windward area of the blade can also include increasing the thickness (the axial dimension of the fan) of the blade to increase the windward area of the blade.

[0060] The inventor of the application finds that increasing the thickness of the blade can increase the windward area of the blade, thereby achieving the effect of increasing the air flow. However, the length of the rotating shaft connected with the blade and driving the rotation of the blade is also increased. With the increase of the length of the rotating shaft, the stability of the rotation of the rotating shaft is affected, that is, the stability of the rotating shaft is reduced. The reduction of the stability of the rotating shaft will increase the vibration of the fan during operation. Since the vibration will generate corresponding noise, the noise of the fan will inevitably be increased. In addition, the vibration of the fan will also cause damage to the rotating shaft and the blade of the fan, thereby affecting the service life of the fan. Moreover, since the end of the rotating shaft needs to be rotationally matched with the mounting structure, the thickness of the fan needs to at least meet the total length of the rotating shaft and the mounting structure after matching (greater than the thickness of the blade). The increase of the length of the rotating shaft will increase the thickness of the fan. In the limited layout space of the electronic device, the fan with increased thickness will increase the layout difficulty.

[0061] As

[0062] , Figure 6 , ,

[0063] and As shown, this application embodiment provides a fan, which may include a central component 110 and at least one blade 120. The central component 110 is rotatable along its axis. The blade 120 has a first end 1203 connected to the central component 110 and a second end 1204 opposite to the first end 1203. The thickness of the second end 1204 is greater than the thickness of the first end 1203. The thickness of the blade 120 is the dimension of the blade 120 along the axial direction X of the central component 110. Therefore, during the rotation of the central component 110 along its axis 111, the blade 120 can be driven to rotate along the axis 111 of the central component 110. The blade 120 can drive fluid to flow from the central component 110 in a direction away from the central component 110.

[0060] Since the first end 1203 of the blade 120 can be connected to the central component 110, and the size (thickness) of the central component 110 determines the length of the fan shaft, the area of ​​the windward surface 1201 of the blade 120 can be increased by increasing the thickness of the second end 1204 while keeping the thickness of the first end 1203 constant. This increases the amount of fluid flowing through the fan blade 120 and its rotating blade passage. Furthermore, since the thickness of the first end 1203 remains constant, the thickness of the central component 110 can also remain constant, ensuring the fan shaft length is constant. This guarantees shaft stability, preventing increased vibration and noise during operation due to reduced shaft stability. It also prevents damage to the fan shaft and blades caused by vibration, ensuring the fan's lifespan. Moreover, since the shaft length remains constant, the fan thickness does not need to be increased, facilitating fan installation within electronic devices.

[0061] The central component 110 and the blades 120 can form a fan blade structure 100.

[0062] like Figure 6 As shown, the thickness of the first end 1203 is less than the thickness of the second end 1204.

[0063] In some embodiments, the blade 120 may have a windward side 1201 and a leeward side 1202 facing away from each other. The windward side 1201 may be used to provide a driving force to the fluid. The blade 120 may have a first portion 121 and a second portion 122 arranged along a first direction Y, where the first direction Y is the direction from the first end 1203 to the second end 1204.

[0064] The windward side 1201 and the leeward side 1202 are arranged opposite to each other, so that the orientation of the windward side 1201 is opposite to that of the leeward side 1202. That is, the windward side 1201 and the leeward side 1202 are two sides of the blade 120 facing opposite directions.

[0065] The first portion 121 and the second portion 122 are arranged along the first direction Y, i.e. the first portion 121 is located on the side of the second portion close to the first end 1203. This makes the second portion 122 have a curved portion 1221 located at a position away from the central component 110.

[0066] The second portion 122 can have a curved portion 1221, which can protrude towards the direction in which the leeward surface 1202 faces. That is, the curved portion 1221 can be located at a position away from the first end 1203 of the blade 120, forming a curved structure of the tail end (the area close to the second end 1204) of the blade 120, which can simulate the shape of a bionic structure such as a fish tail or fin at the moment of swinging in water, forming an anti-Karman vortex street to avoid generating resistance. The resistance can include the counteracting force provided to the fluid due to the formation of the Karman vortex street, and the anti-Karman vortex street can generate a thrust on the fluid to increase the flow rate of the fluid.

[0067] The Karman vortex street is two rows of symmetrical vortices formed behind an obstacle when fluid encounters the obstacle, the directions of the vortices are opposite, pointing to the inside of the vortex street, so as to make the fluid form a counteracting force, according to the principle of action and reaction, the flow rate of the air will be affected. In the fan, the blade 120 can act as the above-mentioned obstacle. Therefore, in the structure of the blade 120 with the length direction as the axis of symmetry, the above-mentioned Karman vortex street is easily formed. The present application forms the shape of a bionic structure such as a fish tail or fin at the moment of swinging in water through the curved portion 1221, forming an anti-Karman vortex street to avoid generating corresponding resistance.

[0068] That is, in the process of rotating the central component 110 along its axis 111, the blade 120 is driven to rotate along the axis 111 of the central component 110, and the fluid flows along the first end 1203 to the second end 1204 of the blade 120 relative to the blade 120. The blade 120 in the fluid simulates a bionic structure in water, forms an anti-Karman vortex street to avoid generating resistance, thereby reducing the resistance to the fluid and providing a thrust, increasing the energy of the fluid flow, and further increasing the flow rate of the fluid. The increase in the area of the windward surface 1201 will make the blade 120 generate larger vortexes, thereby increasing the aerodynamic noise and easily causing vibration of the blade 120 to reduce the stability.

[0069] In some embodiments, the second end 1204 has a first end portion and a second end portion facing away from the first end of the central component 110, in the first direction Y, the distance from the first end portion to the first end 1203 is a first distance, and the distance from the second end portion to the first end 1203 is a second distance, the second distance being different from the first distance; the first direction Y is the direction from the first end 1203 to the second end 1204; during the rotation of the central component 110 and the movement of the blade 120, the blade 120 drives the fluid to flow along the first direction Y relative to the windward surface 1201, and the first end portion and the second end portion have different effects on the fluid. Because the second distance is different from the first distance, the first end portion and the second end portion can form a concave-convex structure, and the first end portion and the second end portion belong to the convex portion and the concave portion of the concave-convex structure respectively, that is, the structures of the first end portion and the second end portion are different, so that the effects on the fluid are different.

[0070] The first end portion and the second end portion can be arranged in the thickness direction of the second end 1204. During the movement of the blade 120, a part of the fluid corresponds to the first end portion, and another part of the fluid corresponds to the second end portion, so that the first end portion and the second end portion have different effects on the fluid.

[0071] By having different effects on the fluid, the formation of large vortexes under the joint action of the fluid is avoided, the effect of breaking up large vortexes is achieved, the aerodynamic noise is reduced, and the vibration of the vortex on the blade 120 is weakened, and the stability is improved.

[0072] The different effects on the fluid can include different forces and different times of action on the fluid.

[0073] In a specific embodiment, the first distance can be greater than the second distance. That is, the first end portion is the convex portion of the concave-convex structure, and the second end portion is the concave portion of the concave-convex structure.

[0074] The first end portion can increase the speed of the first fluid portion corresponding thereto from the blade 120. That is, the first end portion protrudes from the second end portion, so that the fluid corresponding to the first end portion can quickly separate from the blade 120. That is, compared with other parts of the fluid (including the second fluid portion corresponding to the second end portion), the speed of the first fluid portion corresponding to the first end portion from the blade 120 is increased, so that the large vortex generated by the blade 120 on the fluid is broken up into small vortexes, the sound quality of the fluid is effectively improved, and the effect of reducing noise is achieved. In turn, the noise during the operation of the fan is further reduced.

[0075] Similarly, the second distance can be less than the first distance, that is, the first end portion is the convex portion of the concave-convex structure, and the second end portion is the concave portion of the concave-convex structure. The second end portion can concentrate the second fluid portion corresponding thereto to increase the flow rate.

[0076] That is, in the process of the rotation of the central component 110 and the movement of the blade 120, the blade 120 drives the fluid to flow along the first direction Y relative to the windward surface 1201, the first end and the second end have different effects on the fluid, so that the large vortex generated by the blade 120 is scattered into small vortexes.

[0077] In summary, the thickness of the second end 1204 of the blade 120 can be greater than the thickness of the first end 1203, that is, the area of the windward surface 1201 of the blade 120 can be increased by increasing the thickness of the second end 1204 of the blade 120 on the basis of the unchanged thickness of the first end 1203, thereby increasing the amount of fluid flowing through the rotating blade passage of the fan blade 120. The unchanged thickness of the first end 1203 will not increase the length of the rotating shaft, which can ensure the stability of the rotating shaft and avoid noise caused by vibration of the fan blade structure 100; and because the second end 1204 has a protruding part protruding outward away from the central component 110, the blade 120 has different effects on the fluid passing through the protruding part and the fluid not passing through the protruding part, so that the large vortex generated by the blade 120 is scattered into small vortexes, thereby effectively improving the sound quality and reducing noise. By providing the curved part 1221 on the second part 122 of the blade 120 away from the central component 110, the shape of the fish tail or the paddle swinging in the water is simulated, the reverse Karman vortex street that avoids generating resistance is formed, and on the basis of improving the fluid energy, the flow rate of the fluid can be further increased.

[0078] The fan provided by the embodiment of the application combines the thickness of the second end 1204 being greater than the thickness of the first end 1203, the curved part 1221 of the second part 122 of the blade 120 protruding outward in the direction toward the leeward surface 1202, and the protruding part of the second end 1204 protruding outward away from the central component 110, and can effectively improve the heat dissipation effect on the basis of increasing the amount of fluid and the flow rate of the fluid, and can also make the small vortexes generated by scattering quickly escape from the peripheral area of the blade 120 under the driving of the fluid with increased amount and flow rate, thereby further reducing noise.

[0079] The fan blade structure 100 can be located in a liquid or gaseous medium. In an embodiment in which the fan blade structure 100 can be located in a gaseous medium, the gaseous medium can be air. The fluid provided by the blade 120 to provide a pushing force can be air flow.

[0080] In some embodiments, the first portion can have a first portion surface located on the windward surface 1201, the first portion surface can be arc-shaped and protrude towards the windward surface 1201. And the second portion 122 can have a second portion surface located on the windward surface 1201, the second portion surface can be arc-shaped and protrude towards the leeward surface 1202. Through the above arrangement, the blade 120 forms an "S" shape structure along the direction from the first end 1203 to the second end 1204, thereby positively affecting the fluid inside the air duct, reducing flow separation, reducing vortex loss, and thus improving the performance of the fan.

[0081] The first portion surface can be part of the windward surface 1201 and serve to provide thrust to the fluid. The first portion surface is arc-shaped and protrudes towards the windward surface 1201, i.e., the direction in which the first portion surface protrudes is the same as the direction of the windward surface 1201.

[0082] The second portion 122 can have a curved portion 1221, and the second portion surface can include the area where the curved portion 1221 is located on the windward surface 1201. Because the second portion 122 can have a curved portion 1221, the windward surface 1201 of the curved portion 1221 can be a concave arc surface protruding towards the leeward surface 1202, and the leeward surface 1202 of the curved portion 1221 can be a convex arc surface protruding towards the leeward surface 1202. The windward surface 1201 (concave arc surface) of the curved portion 1221 can be the second portion surface. That is, by providing the curved portion 1221 on the second portion 122, the second portion 122 can have the above-mentioned second portion surface.

[0083] Of course, the first portion 121 can also have a curved structure, so that the windward surface 1201 of the curved structure is a convex arc surface protruding towards the windward surface 1201, and the leeward surface 1202 of the curved structure is a concave arc surface protruding towards the windward surface 1201. The windward surface 1201 (convex arc surface) of the curved structure can be the first portion surface. That is, by providing the curved structure on the first portion 121, the first portion 121 can have the above-mentioned first portion surface.

[0084] The second portion 122 can have a second portion surface located on the windward surface 1201, the second portion surface can be arc-shaped and protrude towards the leeward surface 1202, and the first portion 121 can have a first portion surface located on the windward surface 1201, the first portion surface can be arc-shaped and recessed towards the windward surface 1201, or the first portion surface can be flat.

[0085] Alternatively, the first part 121 may have a first partial surface located on the windward side 1201, the first partial surface being an arc-shaped structure and protruding towards the windward side 1201, and the second part 122 may have a second partial surface located on the windward side 1201 being an arc-shaped structure and recessed towards the leeward side 1202, or the second partial surface being a plane. The curved portion 1221 of the second part 122 is relatively independent from the second partial surface.

[0086] Of course, the first part 121 on the windward side 1201 can also be an arc-shaped structure and recessed towards the windward side 1201, or the first part can be a flat surface. Similarly, the second part 122 on the windward side 1201 can be an arc-shaped structure and recessed towards the leeward side 1202, or the second part can be a flat surface. The windward sides 1201 of the first part 121 and the second part 122 can also have other structures, which will not be detailed here but are all within the scope of protection.

[0087] like Figure 7 As shown, in embodiments without protrusions, the end face 12040 of the second end 1204 is flat. In one embodiment, the end face 12040 of the second end 1204 is parallel to the axis 111 of the central member 110.

[0088] In some embodiments, the end face of the second end 1204 can be a concave-convex surface, with the convex region of the concave-convex surface corresponding to the protrusion. The concave-convex surface is a surface that is not flat, having both a recessed region and a convex region. The convex region of the concave-convex surface protrudes away from the first end 1203 relative to the recessed region. The convex region of the concave-convex surface can serve as the outer edge surface of the protrusion.

[0089] Among them, such as Figure 8 As shown, in one specific embodiment, the concave-convex surface 12041 can be a tooth-shaped structure, which includes multiple planes connected in sequence, with adjacent planes forming a certain acute or obtuse angle. The tooth-shaped structure's concave-convex surface 12041 can form relatively sharp protrusions (sharp corners protruding away from the first end 1203 formed at the connection point of adjacent planes), thus facilitating rapid fluid detachment. However, due to the need to process the sharp protrusions (sharp corners), the chamfering process is quite difficult.

[0090] like Figure 9As shown, in another specific embodiment, the uneven surface 12042 can also be sawtooth-shaped, and its uneven surface 12042 includes a plurality of sequentially connected planes, with adjacent planes arranged perpendicularly to each other. The plurality of planes may include a combination of a first plane, a second plane, a third plane, and a fourth plane connected in sequence, wherein the first plane and the third plane are relatively parallel, and the third plane is located on the side of the first plane closer to the first end 1203; the second plane and the fourth plane are opposite to each other and parallel. The second plane, the third plane, and the fourth plane form a recessed portion.

[0091] Among them, the serrated concave-convex surface 12041 can form a deeper recess, which is convenient for concave control and facilitates fluid concentration. However, the above-mentioned concave-convex surface 12042 is difficult to process.

[0092] Alternatively, the end face of the second end 1204 can be configured with other structures. The end face of the second end 1204 can be a concave surface facing the first end 1203, with the two side regions of the concave surface corresponding to the protrusion. That is, the concave surface is recessed towards the second end 1204, such that the middle region of the concave surface is closer to the second end 1204 than its two side regions, and the two side regions of the concave surface protrude away from the first end 1203 relative to the middle region of the concave surface. The two side regions of the concave surface can serve as the outer edge surface of the protrusion.

[0093] like Figure 10 As shown, in one specific embodiment, the number of recessed surfaces 12043 can be one. The recessed surface 12043 can be a concave arc surface, that is, the end face of the second end 1204 is fishtail shaped. The two side areas of the recessed surface 12043 are higher than the central area of ​​the recessed surface 12043, thereby forming a protrusion.

[0094] The concave surface design facilitates processing; that is, only the concave surface needs to be machined to form a recessed portion in the central area and a protruding portion in the edge area. Furthermore, the concave surface 12043 of the concave surface is more suitable for implementations where the blade 120 has a smaller thickness.

[0095] like Figure 11 As shown, in another specific embodiment, the number of recessed surfaces 12044 can be multiple, forming a web-shaped structure. The two side regions of two adjacent recessed surfaces 12044 are connected to form an outwardly convex structure higher than the central region of the recessed surface 12044, which corresponds to the protrusion.

[0096] Similarly, the concave arc surface facilitates processing. Furthermore, the recessed surface 12043 formed by multiple concave arc surfaces is more suitable for implementation schemes where the blade 120 has a larger thickness.

[0097] Of course, in other embodiments, the end face of the second end 1204 can be a convex surface protruding outwardly away from the first end 1203, and the convex region of the convex surface corresponds to the convex portion.

[0098] The vane 120 can have a first side face 1205 and a second side face 1206 opposite to each other, and the first side face 1205 and the second side face 1206 can be arranged along the axial direction X of the central component 110.

[0099] That is, the vane 120 and the central component 110 form the fan structure 100, and the first side face 1205 and the second side face 1206 can be located at the end face of the fan structure 100. In addition, the first side face 1205 and the second side face 1206 can be arranged along the axial direction X of the central component 110, that is, the first side face 1205 and the second side face 1206 are arranged along the thickness direction of the vane 120. That is, the outer surface of the vane 120 can include the windward face 1201, the leeward face 1202, the end face of the first end 1203, the end face of the second end 1204, the first side face 1205 and the second side face 1206.

[0100] In some embodiments, the first side face 1205 can have a first region 12051, a second region 12052 and a third region 12053 arranged along the first direction Y and connected in sequence, and the distance between the first region 12051 and the second side face 1206 can be smaller than the distance between the third region 12053 and the second side face 1206. Therefore, the distance between the first region 12051 and the second side face 1206 is the thickness of the first end 1203, and the distance between the third region 12053 and the second side face 1206 is the thickness of the second end 1204. The second region 12052 can be a connecting transition surface connecting the first region 12051 and the third region 12053. The connecting transition surface can be a flat surface, or an arc surface or a corrugated surface, etc. The second region 12052 can reduce or eliminate the stress concentration between the first region 12051 and the third region 12053, so as to ensure the overall strength of the vane 120.

[0101] The first region 12051, the second region 12052 and the third region 12053 are connected in sequence, that is, the second region 12052 is a connecting region between the first region 12051 and the third region 12053. One side of the first region 12051 is connected with the second region 12052, and the other side of the second region 12052 is connected with the third region 12053.

[0102] In the case that the thickness of the blade 120 is small, due to the tolerance in the forming process and the small thickness of the blade 120, the material in the area with small thickness is less, which easily affects the shaping effect of the curved shape (such as an arc). Therefore, in some embodiments, the second part 122 can be a structure between the third area 12053 and the second side surface 1206, and the structure between the third area 12053 and the second side surface 1206 has a bending part 1221, so that the bending part 1221 is located in the area with large thickness of the blade 120. That is, since the distance between the third area 12053 and the second side surface 1206 is the thickness of the second end 1204, the thickness of the position where the blade 120 is provided with the bending part 1221 is large (larger than the thickness of the first end 1203), which is more conducive to the shaping of the bending part 1221 and facilitates the processing of the blade 120.

[0103] The second side surface 1206 can be a plane, an arc surface, or other structure surface, as long as it facilitates the operation of the fan blade structure 100 during the installation process.

[0104] Of course, the second side surface 1206 can also be a corrugated surface or include a stepped surface structure formed by the first side surface 1205, which is not specifically limited herein and is within the protection scope.

[0105] In some embodiments, the plane where the first area is located and / or the plane where the third area 12053 is located can be parallel to the second side surface 1206. Through the above arrangement, on the basis that the first side surface 1205 can form a stepped surface, the distance between the first area 12051 and the second side surface 1206 is constant and the distance between the third area 12053 and the second side surface 1206 is constant, which facilitates the design of the area of the windward surface 1201 and the design of the fan shell.

[0106] The plane where the first area 12051 is located and the plane where the third area 12053 is located can be parallel to the second side surface 1206, or one of the plane where the first area 12051 is located and the plane where the third area 12053 is located can be parallel to the second side surface 1206, and the other can be arranged at a certain angle with the second side surface 1206.

[0107] The first area 12051 and the third area 12053 can be both arranged as a plane. The first area 12051 and the third area 12053 can also be arranged as a non-plane, such as an arc surface, a corrugated surface, etc.

[0108] For the convenience of processing the blade 120, the second region 12052 can also be set as a plane. The plane where the second region 12052 is located can be set at an angle with the second side 1206. Similarly, the second region 12052 can also be set as a non-plane, such as an arc surface, a corrugated surface, etc.

[0109] The plane where the second region 12052 is located can be set at an angle with the second side 1206, so that the plane where the second region 12052 is located is set at an angle with the second side 1206, so as to realize that the distance from one side of the second region 12052 (the position connected with the first region 12051) to the second side 1206 (the plane) is different from the distance from the other side of the second region 12052 (the position connected with the third region 12053) to the second side 1206, and the distance between the other side of the second region 12052 and the second side 1206 is greater than the distance between one side of the second region 12052 and the second side 1206. The third region can be located on the side of the blade 120 away from the central component 110, close to the free end of the blade 120. During the rotation of the fan blade structure 100, the relative force or influence between the free end of the blade 120 and the fluid is relatively large. In order to improve the stability of the blade 120, the fan blade structure 100 can also have a reinforcing piece 130, and the reinforcing piece 130 can connect the third regions 12053 of at least two blades 120. The reinforcing piece 130 can be embedded in the blade 120, so that the outer end surface of the reinforcing piece 130 facing away from the second side 1206 is coplanar with the surface where the third region 12053 is located. Of course, the outer end surface of the reinforcing piece 130 facing away from the second side 1206 can also be set parallel to or at an angle with the surface where the third region 12053 is located, which will not be listed one by one here.

[0110] By connecting the third regions 12053 of at least two blades 120 through the reinforcing piece 130, at least two blades 120 form a relatively stable combined structure through the reinforcing piece 130, so as to improve the structural stability of the blade 120 during the process of exerting force on the fluid, thereby avoiding deformation of the blade 120 and improving the service life.

[0111] In an embodiment, the reinforcing piece 130 can be a reinforcing ring, and the center line of the reinforcing ring coincides with the axis 111 of the central component 110. Through the above arrangement, the gravity of the reinforcing ring does not affect the rotation of the central component 110, that is, the rotation stability of the central component 110 is improved.

[0112] The reinforcing piece 130 can also be set as a plurality of relatively independent connecting strips, and the connecting strips connect at least two blades 120. In order to improve the rotation stability of the central component 110, the plurality of connecting strips can be uniformly distributed along the circumference of the central component 110.

[0113] The fan housing can have a first plate 200 and a second plate 300 arranged along the axial direction X of the central component 110, and the fan blade structure 100 (the blades 120) can be located between the first plate 200 and the second plate 300; wherein the fan housing can include a cover plate and a housing, the fan blade structure 100 is arranged in the housing, and the cover plate closes the housing to form a cavity accommodating the fan blade structure 100. The first plate 200 can be located on the cover plate, and the second plate 300 can be located on the housing.

[0114] The first plate 200 can have a first outwardly convex region 210 corresponding to the second end 1204 of the blade 120 and convex away from the second plate 300, and one side of the first outwardly convex region 210 towards the blade 120 can form a first groove structure capable of accommodating part of the second end 1204 of the blade 120. That is, the second end 1204 of the blade 120 can be partially embedded in the first groove structure, thereby improving the structural compactness between the first plate 200 and the fan blade structure 100, and more conducive to thinning the thickness of the fan, thereby facilitating application in electronic devices with light and thin requirements, such as notebook computers and the like.

[0115] The first outwardly convex region 210 corresponds to the second end 1204 of the blade 120. That is, along the axial direction of the fan (the axial direction X of the central component 110), the first outwardly convex region 210 is aligned with the second end 1204 of the blade 120, so that the projection of the first outwardly convex region 210 along the axial direction of the fan covers the second end 1204 of the blade 120. Since the first outwardly convex region 210 of the first plate 200 is convex away from the second plate 300, the first outwardly convex region 210 protrudes in a direction away from the second end 1204.

[0116] Since the first plate 200 is usually a sheet structure, and an air inlet corresponding to the central region of the fan blade structure 100 (which can include the central component 110 or the first end 1203 of the blade 120) can be arranged thereon, thereby weakening the structural strength of the first plate 200. Through the first outwardly convex region 210, a concave-convex structure is formed on the first plate 200 along its thickness, thereby improving the structural strength of the first plate 200, avoiding the need to arrange a reinforcing component on the first plate 200 (the cover plate), and simplifying the assembly operation of the fan. Wherein the first plate 200 can be a sheet metal part, and the concave-convex structure is formed by stamping, and the inside of the concave-convex structure is the first groove structure.

[0117] The second plate 300 can have a second outwardly convex region corresponding to the second end 1204 of the blade 120 and convex away from the first plate 200, and one side of the second outwardly convex region towards the blade 120 can form a second groove structure capable of accommodating part of the second end 1204 of the blade 120. Similarly, the second outwardly convex region can also play a role in strengthening the structural strength of the second plate 300.

[0118] The second plate 300 can also be provided with an air inlet hole 310.

[0119] Alternatively, the second plate 300 can be used as a mounting surface for the fan within the electronic device housing, meaning the second plate 300 contacts the inner wall of the electronic device housing. Therefore, there is no need to provide a second protruding area on the second plate 300 while still ensuring the strength of the second plate 300.

[0120] In some embodiments, the first convex region and / or the second convex region may be an annular structure, the axis of which may coincide with the axis 111 of the central component 110; the area of ​​the first plate 200 and / or the second plate 300 located within the annular structure may be the air intake region 230 of the fan housing. The air intake region 230 may have an air inlet.

[0121] The first convex region 210 and / or the second convex region are annular structures, that is, the projection of the first convex region 210 and / or the second convex region along the axial direction of the fan is an annular structure. For example... Figure 1 As shown, the first convex region 210 is an annular structure, and its axis coincides with the axis 111 of the central component 110. Taking the area of ​​the first plate 200 located within the annular structure as the air inlet area of ​​the fan housing, the annular structure is arranged along the circumference of the air inlet. Since the first convex region 210 is a concave-convex structure formed on the first plate 200 along its thickness, the annular structure can strengthen the area of ​​the first plate 200 located around the air inlet, ensuring the structural stability of the air inlet. It also compensates for or avoids the weakening of strength caused by opening the air inlet on the first plate 200 to a certain extent, effectively improving the strength of the first plate 200.

[0122] The axes of the first convex region 210 and / or the second convex region coincide with the axis 111 of the central component 110, that is, the axes of the first convex region 210 and / or the second convex region are coaxially arranged with respect to the axis 111 of the central component 110. During the rotation of the blade 120 driven by the central component 110, the motion trajectory of the second end 1204 of the blade 120 is centrally symmetrical with respect to the axis 111 of the central component 110. This arrangement ensures that the first convex region 210 and / or the second convex region are centrally symmetrical about the axis 111 of the central component 110, thus facilitating the matching of the motion trajectory of the second end 1204.

[0123] Of course, the air inlet can also be located inside the first protruding area 210, etc.

[0124] In order to reduce the strength weakening of the first plate 200 by the air inlet as much as possible, the air inlet of the fan shell can be provided with a louver structure. The louver structure can include a plate member connected to the first plate 200 at an angle, the plate member blocks the opening of the first plate 200, and the gap between the plate member and the first plate 200 forms a passage of the air inlet. In the specific processing process, the plate member can be processed on the first plate 200 by stamping or the like, and the plate member is bent to form the air inlet between the plate member and the first plate 200.

[0125] Of course, the air inlet of the fan shell can also include a through hole penetrating through the first plate 200. The through hole can be a square hole, a circular hole, an elliptical hole or a polygonal hole, etc.

[0126] In some embodiments, the first plate 200 can have a first outlet area outwardly protruding away from the second plate 300, and a third groove structure can be formed on the side of the first outlet area facing the blade 120. The third groove structure can be in communication with the first groove structure formed by the first outwardly protruding area 210 of the first plate 200, and the third groove structure can be an inner wall of the air outlet of the fan shell. Through the above arrangement, the air outlet of the fan shell is reinforced, and the structural stability of the air outlet of the fan shell is improved.

[0127] As shown in FIG. 1, Figure 1 In some specific embodiments, the second plate 300 can be a flat plate without a concave-convex structure.

[0128] The second plate 300 can also have a second outlet area outwardly protruding away from the first plate 200, and a fourth groove structure can be formed on the side of the second outlet area facing the blade 120. The fourth groove structure is in communication with the second groove structure formed by the second outwardly protruding area of the second plate 300, and the fourth groove structure is an inner wall of the air outlet of the fan shell.

[0129] The electronic device provided by the embodiments of the present application further includes a fan for dissipating heat of the heat generating component.

[0130] The blade structure 100 of the fan includes:

[0131] A central component 110, which is rotatable along an axis 111 thereof;

[0132] At least one blade 120, which has opposite windward and leeward surfaces 1201 and 1202, the windward surface 1201 being used to provide a pushing force to the fluid, the blade 120 having a first end 1203 connected to the central component 110 and a second end 1204 opposite to the first end 1203, the blade 120 having a first portion 121 and a second portion 122 arranged in a first direction Y, the first direction Y being the direction from the first end 1203 to the second end 1204.

[0133] The second part 122 has a curved portion 1221 which protrudes towards the direction where the leeward surface 1202 faces; the thickness of the second end 1204 is greater than the thickness of the first end 1203, the thickness direction is the axial direction X of the central component 110; the second end 1204 has a protruding portion which protrudes outwardly away from the central component 110;

[0134] During the rotation of the central component 110 and the movement of the blade 120, the blade 120 drives the fluid to flow along the first direction Y relative to the windward surface 1201, and the blade 120 has different effects on the fluid passing through the protruding portion and the fluid not passing through the protruding portion, so that the large vortex generated by the blade 120 is dispersed into small vortexes.

[0135] The fan blade structure 100 is located in a fan housing of the fan, and an air outlet of the fan housing is arranged correspondingly to the heat generating component.

[0136] The electronic device provided by the embodiment of the present application can effectively improve the heat dissipation effect and further reduce the noise, so that the heat dissipation demand of the electronic device can be met and the noise of the electronic device during operation can be reduced in the case of increasing the performance of the electronic device to increase the power consumption.

[0137] The electronic device can be a notebook computer, a tablet computer or an all-in-one machine.

[0138] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts of each embodiment can be referred to each other.

[0139] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fan, characterized by, The center part is rotatable along its axis; The at least one blade has a first end connected with the center part and a second end opposite to the first end, the thickness of the second end is greater than the thickness of the first end, the thickness of the blade is the dimension of the blade along the axial direction of the center part; The second end has a first end portion and a second end portion facing away from the center part, the first end portion and the second end portion are arranged along the thickness direction of the blade; In the first direction, the distance from the first end portion to the first end is a first distance, the distance from the second end portion to the first end is a second distance, the second distance is different from the first distance; The first direction is the direction from the first end to the second end; During the rotation of the center part and the movement of the blade, the blade drives the fluid to flow along the first direction relative to the windward surface of the blade, the first end portion and the second end portion have different effects on the fluid. The blade has opposite windward surface and leeward surface, the windward surface is used to provide thrust to the fluid, The blade has a first portion and a second portion arranged along a first direction, the first direction is the direction from the first end to the second end; 2. The fan of claim 1, wherein The second portion has a curved portion, the curved portion protrudes towards the direction in which the leeward surface faces. Selected from at least one of the following combinations: The first portion has a first portion surface on the windward surface, the first portion surface is a curved surface structure and protrudes towards the windward surface of the blade; 3. The fan of claim 2, wherein The second portion has a second portion surface on the windward surface, the second portion surface is a curved surface structure and protrudes towards the leeward surface of the blade. The first distance is greater than the second distance; The first end portion can increase the speed of the first fluid part corresponding thereto to separate from the blade, so that the large vortex generated by the blade is scattered into small vortexes; the second end portion can concentrate the second fluid part corresponding thereto to increase the flow rate.

4. The fan of claim 1, wherein Selected from one of the following combinations: The end surface of the second end is a concave-convex surface, the convex region of the concave-convex surface corresponds to the first end portion; 5. The fan of claim 1 wherein, The end surface of the second end is a concave surface recessed towards the first end, the two side regions of the concave surface correspond to the first end portion; Or, the end surface of the second end is a convex surface protruding away from the first end, the convex region of the convex surface corresponds to the first end portion. The blade has opposite first side surface and second side surface, the first side surface and the second side surface are arranged along the axial direction of the center part; The first side surface has a first region, a second region and a third region arranged along a first direction and connected in sequence, the first direction is the direction from the first end to the second end, the distance between the first region and the second side surface is less than the distance between the third region and the second side surface.

6. The fan of claim 1, wherein Selected from at least one of the following combinations: The plane where the first region is located is parallel to the second side surface; 7. The fan of claim 6, wherein, The plane where the third region is located is parallel to the second side surface; ​ ​ The plane containing the second region forms an angle with the second side surface.

8. The fan of claim 6, wherein, The fan also has a reinforcement that connects at least two of the blades to the third region.

9. The fan of claim 7, wherein, The fan also includes a fan housing, and the central component and the blades are located in the inner cavity of the fan housing; The fan housing has a first plate and a second plate arranged axially along the central component, and the blades are located between the first plate and the second plate; The first plate has a first convex region that corresponds to the second end of the blade and protrudes outward from the second plate. The side of the first convex region facing the blade forms a first groove structure that can accommodate part of the second end of the blade. And / or, The second plate has a second convex region that corresponds to the second end of the blade and protrudes outward from the first plate. The side of the second convex region facing the blade forms a second groove structure that can accommodate part of the second end of the blade.

10. The fan of claim 9, wherein, The first convex region and / or the second convex region are annular structures, and their axes coincide with the axis of the central component. The area where the first plate and / or the second plate is located within the annular structure is the air intake area of ​​the fan housing.

11. The fan of claim 10, wherein, The first plate has a first outlet area that protrudes outward from the second plate. A third groove structure is formed on the side of the first outlet area facing the blade. The third groove structure is connected to the first groove structure formed by the first protruding area of ​​the first plate. The third groove structure is the inner wall of the air outlet of the fan housing. And / or, The second plate has a second outlet region that protrudes outward from the first plate. The side of the second outlet region facing the blade forms a fourth groove structure. The fourth groove structure is connected to the second groove structure formed by the second protruding region of the second plate. The fourth groove structure is the inner wall of the air outlet of the fan housing.

12. An electronic device comprising a heat generating component, characterized by It also includes a fan for dissipating heat from the heat-generating components; The fan includes: A central component, which is rotatable along its axis; At least one blade, the blade having a first end connected to the central component and a second end opposite to the first end, the thickness of the second end being greater than the thickness of the first end, and the thickness of the blade being the dimension of the blade along the axial direction of the central component; in, The second end has a first end facing away from the central component and a second end, the first end and the second end being arranged along the thickness direction of the blade; In a first direction, the distance from the first end to the first end is a first distance, and the distance from the second end to the first end is a second distance, the second distance being different from the first distance; the first direction is the direction from the first end to the second end; During the rotation of the central component and the movement of the blades, the blades cause the fluid to flow in the first direction relative to the windward side of the blades, and the first end and the second end have different effects on the fluid.

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