Impeller structure and fan structure

Abstract

The present application provides a kind of impeller structure, comprising: a plurality of upper impeller components, each of the upper impeller component includes: a blade part, extending towards a first extension direction;A upper hub side wall part, the upper hub side wall part extends from the end of the blade part towards a second extension direction, wherein the first extension direction and the second extension direction are included in a first obtuse angle;And a fixed part, the blade part, the upper hub side wall part and the fixed part are integrally formed;And a lower impeller component, comprising: a lower hub side wall part, combined with the upper hub side wall part into a complete hub side wall part;A plurality of fitting parts, each corresponding to a plurality of the upper impeller component, and each of the fitting part is interlocked with one of the plurality of the upper impeller component;And an inner extension part, extending towards the central axis of the lower impeller component, the fixed part is fixed to the inner extension part.

Description

Technical Field

[0001] This application relates to an improved impeller structure and a fan structure including the same. Background Technology

[0002] In commonly known fans, the fan blade hub housing is often made of plastic. However, due to the poor thermal conductivity of plastic, it does not help to dissipate heat from the internal motor of the fan. During fan operation, a large amount of heat can easily accumulate inside.

[0003] Therefore, in order to improve the heat accumulation problem, an improved fan structure is needed to enhance heat dissipation efficiency, thereby improving motor efficiency. Summary of the Invention

[0004] To address the drawback of the hub's inability to conduct heat, this application proposes an improved impeller structure that utilizes the hub component in contact with the rotor housing and the fan blades together to improve heat dissipation efficiency.

[0005] According to some embodiments of this application, an impeller structure is provided, comprising: a plurality of upper impeller components, each upper impeller component comprising: a blade portion extending in a first extending direction; an upper hub sidewall portion extending from one end of the blade portion in a second extending direction, wherein the first extending direction and the second extending direction form a first obtuse angle; and a fixing portion, wherein the blade portion, the upper hub sidewall portion and the fixing portion are integrally formed; and a lower impeller component comprising: a lower hub sidewall portion combined with the upper hub sidewall portion to form a complete hub sidewall portion; a plurality of fitting portions, each corresponding to a plurality of upper impeller components, and each fitting portion fitting into one of the plurality of upper impeller components; and an inner extending portion extending toward the central axis of the lower impeller component, wherein the fixing portion is fixed to the inner extending portion.

[0006] In some embodiments, each upper hub sidewall portion includes a support wall for fitting one of a plurality of fitting portions.

[0007] In some embodiments, in each upper impeller component, a support wall extends from the blade portion toward the lower impeller component, and the direction of extension of the support wall is different from the direction of extension of the blade portion from the upper hub sidewall portion.

[0008] In some embodiments, in each upper impeller member, the support wall has a first end and a second end. The shortest distance between the first end and the fixing portion and the shortest distance between the second end and the fixing portion are different. The lower impeller member also includes a base located on the side opposite to the inner extension. Each of the plurality of fitting portions has an upper end and a lower end. The shortest distance between the upper end and the base and the shortest distance between the lower end and the base are different.

[0009] In some embodiments, both the base and the inner extension are annular. The diameter of the base is greater than the diameter of the inner extension.

[0010] In some embodiments, an outer peripheral surface of the complete hub sidewall portion is a tapered surface.

[0011] In some embodiments, the fixing portion has at least one first screw hole, corresponding to at least one second screw hole located in the inner extension portion.

[0012] In some embodiments, each upper impeller component further includes a third threaded hole located on an outer circumferential surface of the upper hub sidewall portion. Each third threaded hole corresponds to a second fixing portion located on the lower impeller component.

[0013] In some embodiments, in each fixing part, at least two ring balancing structures are provided on the side opposite to the locking surface.

[0014] In some embodiments, the lower impeller component comprises a metallic material.

[0015] In some embodiments, the impeller structure further includes a rotor housing. At least one rotor magnetic pole is provided inside the rotor housing, and a lower impeller component or an upper impeller component is assembled within the rotor housing.

[0016] In some embodiments, the top sidewall or radial sidewall of the rotor housing is provided with at least one first perforation for an airflow to pass through.

[0017] In some embodiments, at least one second perforation is formed between the rotor housing and the lower impeller component or between the rotor housing and the upper impeller component, the second perforation being for an airflow to pass through.

[0018] According to other embodiments of this application, a fan structure is provided, including: a stator and any of the impeller structures described above. The stator causes the impeller structure to rotate.

[0019] In some embodiments, the fan structure further includes a circuit board assembly for enabling the stator to rotate the impeller structure. Attached Figure Description

[0020] When reading the accompanying drawings, the following detailed description provides the best understanding of all aspects of this application. It should be noted that, according to standard operating procedures in the industry, the various features are not necessarily drawn to scale. In fact, the dimensions of various features may be arbitrarily enlarged or reduced for clarity of illustration.

[0021] Figure 1 A perspective view of a fan structure according to some embodiments of this application is shown.

[0022] Figure 2 An exploded view of a fan structure according to some embodiments of this application is shown.

[0023] Figure 3 The illustration shows a fan structure along some embodiments of this application. Figure 1 A cross-sectional view of line segment AA in the diagram.

[0024] Figure 4A A side view of an impeller structure according to some embodiments of this application is illustrated.

[0025] Figure 4B The drawing will Figure 4A The diagram shown is a side view of one of the upper impeller components in the impeller structure after disassembly.

[0026] Figure 5A A perspective view of a lower impeller component is shown according to some embodiments of this application.

[0027] Figure 5B A top view of a lower impeller component is illustrated according to some embodiments of this application.

[0028] Figure 5C A side view of a lower impeller component is illustrated according to some embodiments of this application.

[0029] Figure 6A A front perspective view of an upper impeller component is shown according to some embodiments of this application.

[0030] Figure 6B A rear perspective view of the upper impeller component is illustrated according to some embodiments of this application.

[0031] Figure 6C The illustration shows a right-side view of the upper impeller component according to some embodiments of this application.

[0032] Figure 6D A rear view of the upper impeller component is shown according to some embodiments of this application.

[0033] Figure 7 The illustrations depict some embodiments according to this application. Figure 4A The diagram shows a three-dimensional cross-sectional view of the impeller structure.

[0034] Explanation of reference numerals in the attached figures

[0035] 10: Fan structure,

[0036] 100: Motor rotor,

[0037] 110: Rotor housing,

[0038] 120: Rotor magnetic poles,

[0039] 150: Rotation axis

[0040] 200: Stator

[0041] 220: Stator poles,

[0042] 300: Circuit board assembly,

[0043] 400: Protective shield

[0044] 500: outer wall,

[0045] 1000: Impeller structure,

[0046] 1100: Upper impeller component,

[0047] 1110: Blade section,

[0048] 1130: Upper wheel hub sidewall,

[0049] 1135: Supporting wall,

[0050] 1135A: First end,

[0051] 1135B: Second end,

[0052] 1150: Fixing part,

[0053] 1151: Locking surface,

[0054] 1153: First screw hole

[0055] 1155: Ring balance structure,

[0056] 1190: Third screw hole

[0057] 1200: Lower impeller component,

[0058] 1210: Chimera part,

[0059] 1215: Fitting surface,

[0060] 1215A: Upper end,

[0061] 1215B: Lower end,

[0062] 1230: Inner extension,

[0063] 1235: Second screw hole

[0064] 1250: Base

[0065] 1270: Second fixing part

[0066] 1290: Lower hub sidewall section,

[0067] 1500: Complete wheel hub sidewall section

[0068] 1510: Outer perimeter,

[0069] A: Airflow

[0070] D1, D2: Diameter length,

[0071] O1: First obtuse angle

[0072] R1: First extension direction

[0073] R2: Second extension direction

[0074] R3: Third extension direction

[0075] S1, S2, S3, S4: Distance,

[0076] T1: First perforation,

[0077] T2: Second perforation. Detailed Implementation

[0078] The following disclosure provides many different embodiments or examples, and describes specific examples of various components and arrangements to implement different features of this application. For example, if this specification describes a first feature formed "above" or "on top of" a second feature, it means that it may include embodiments in which the first feature and the second feature are in direct contact, or embodiments in which an additional feature is formed between the first feature and the second feature, so that the first feature and the second feature are not in direct contact.

[0079] Relative spatial terms, such as "below" or "above," may be used in the embodiments to facilitate the description of the relationship between components or features in the drawings and other components or features. In addition to the orientations shown in the drawings, these spatial terms are intended to encompass different orientations of the device in use or operation. The device may be turned to different orientations (rotated 90 degrees or other orientations), and the spatial terms used herein may be interpreted in the same manner.

[0080] First, please refer to... Figures 1 to 3 . Figure 1 A perspective view of a fan structure 10 according to some embodiments of this application is shown. Figure 2 An exploded view of the fan structure 10 according to some embodiments of this application is shown. Figure 3 The illustration shows, according to some embodiments of this application, the fan structure 10 along... Figure 1 A cross-sectional view of line segment AA in the diagram.

[0081] In embodiments of this application, the fan structure 10 mainly includes: a motor rotor 100, a stator 200, a circuit board assembly 300, a protective cover 400, and an outer wall 500. The motor rotor 100 is rotatable relative to the stator 200 and includes a rotor housing 110, rotor magnetic poles 120, a rotating shaft 150, and an impeller structure 1000, as described below. The stator 200 includes stator magnetic poles 220, corresponding to the rotor magnetic poles 120 of the motor rotor 100. The circuit board assembly 300 is electrically connected to the stator 200, supplying power to the stator magnetic poles 220, thereby generating an electromagnetic driving force between the stator magnetic poles 220 and the rotor magnetic poles 120 to drive the motor rotor 100 to rotate relative to the stator 200.

[0082] exist Figures 1 to 3 In the illustrated embodiment, the protective cover 400 is disposed on the side facing the circuit board assembly 300, and the outer wall 500 is disposed in the circumferential direction of the motor rotor 100 to surround the impeller structure 1000 of the motor rotor 100. By providing the protective cover 400 and the outer wall 500, the motor rotor 100, stator 200, and circuit board assembly 300 can be protected from interfering with or being disturbed by other devices. However, the arrangement of the protective cover 400 and the outer wall 500 is merely illustrative and is not limited to the embodiments of this application, as long as it has a protective function.

[0083] like Figure 2 As shown, the motor rotor 100 and stator 200 can be coaxially arranged, for example, aligned on the central axis of the rotating shaft 150. In some embodiments, the rotating shaft 150 can rotate relative to the stator 200 together with the impeller structure 1000. In other embodiments, the rotating shaft 150 can also serve as a fixed shaft, and the impeller structure 1000 can rotate relative to the stator 200 about the rotating shaft 150.

[0084] Next, refer to Figure 4A as well as Figure 4B Explain the construction of impeller structure 1000. Figure 4A A side view of an impeller structure 1000 according to some embodiments of this application is illustrated. Figure 4B The drawing will Figure 4A The diagram shown is a side view of one of the upper impeller components 1100 in the impeller structure 1000 after disassembly.

[0085] According to an embodiment of this application, the impeller structure 1000 can be connected to the rotor housing 110 of the motor rotor 100. The impeller structure 1000 may include a plurality of upper impeller components 1100 and a lower impeller component 1200. As shown, the upper impeller components 1100 and the lower impeller component 1200 are joined together in a mating manner. Specifically, as... Figure 4BAs shown, each upper impeller component 1100 may include an upper hub sidewall portion 1130, which, together with a lower hub sidewall portion 1290 of the lower impeller component 1200, forms a complete hub sidewall portion 1500. More specifically, the upper impeller component 1100 may correspond to the fitting portion 1210 of the lower impeller component 1200. During assembly, multiple upper impeller components 1100 can be fitted onto the lower impeller component 1200 from the top to the bottom direction shown in the figures. At this time, the upper hub sidewall portion 1130 of the upper impeller component 1100 fits into the lower hub sidewall portion 1290 of the lower impeller component 1200 (particularly into the fitting portion 1210), such that the support wall 1135 of the upper hub sidewall portion 1130 corresponds to and contacts the fitting surface 1215 of the fitting portion 1210. The construction of the support wall 1135 and the fitting surface 1215 will be described in detail below.

[0086] Thus, the upper hub sidewall portions 1130 of the plurality of upper impeller components 1100 and the lower hub sidewall portions 1290 of the lower impeller component 1200 together constitute a complete hub sidewall portion 1500, and the complete hub sidewall portion 1500 is fitted onto the rotor housing 110 of the motor rotor 100. In this case, the lower impeller component 1200 can contact the rotor housing 110. Thus, the complete hub sidewall portion 1500 can rotate relative to the stator 200 along with the motor rotor 100. Furthermore, in the embodiments of this application, the complete hub sidewall portion 1500 has an outer peripheral surface 1510, and this outer peripheral surface 1510 can be a conical surface. In some embodiments, the conical complete hub sidewall portion 1500 can be combined with the blade portions 1110 of the plurality of upper impeller components 1100 ( Figure 4B It is configured as an oblique flow fan, which has a larger base compared to a regular axial flow fan, thus improving the ease of assembly.

[0087] In the lower impeller component 1200, the number and shape of the fitting portions 1210 correspond to the number and shape of the upper impeller component 1100. For example, in Figure 4A and Figure 4B In the illustrated embodiment, the impeller structure 1000 includes five upper impeller components 1100, and thus the lower impeller component 1200 correspondingly has five fitting portions 1210. Furthermore, the upper hub sidewall portion 1130 of the upper impeller component 1100 is approximately triangular, so the fitting portions 1210 are also approximately triangular recesses. However, the number and shape of the fitting portions 1210 are not limited to these, nor are they limited to the number and shape of the upper impeller components 1100; they can be determined according to actual needs.

[0088] Next refer to Figures 5A to 5C Explain the construction of the lower impeller component 1200. Figure 5A A perspective view of the lower impeller component 1200 is shown according to some embodiments of this application. Figure 5BA top view of the lower impeller component 1200 is illustrated according to some embodiments of this application. Figure 5C A side view of the lower impeller component 1200 is illustrated according to some embodiments of this application.

[0089] In embodiments of this application, the lower impeller component 1200 may comprise a metallic material. Because the lower impeller component 1200 contacts the rotor housing 110 of the motor rotor 100, the lower impeller component 1200, made of a metallic material, has the advantage of improving the heat dissipation effect of the fan structure 10. The lower impeller component 1200 may include: a lower hub sidewall portion 1290, a plurality of fitting portions 1210, an inner extension portion 1230, and a base portion 1250.

[0090] As described above, a plurality of fitting portions 1210 may be provided on the lower hub sidewall portion 1290. Each fitting portion 1210 corresponds to an upper impeller member 1100, and each fitting portion 1210 engages with one of the upper impeller members 1100.

[0091] The top surface 1230 extends toward the central axis of the lower impeller component 1200. Here, the central axis of the lower impeller component 1200 can be coaxially arranged with the rotating shaft 150. That is, the inner extension 1230 is closer to the rotating shaft 150 of the motor rotor 100 than the fitting portion 1210. Figure 1 and Figure 3 The inner extension 1230 is perpendicular to the rotation axis 150. The inner extension 1230 has at least one second screw hole 1235 for fixing the upper impeller component 1100. The method of fixing the upper impeller component 1100 and the lower impeller component 1200 will be described in detail below.

[0092] The base 1250 is located on the side opposite to the inner extension 1230. Specifically, in Figure 5C In a side view, the inner extension 1230 is located on the upper side of the drawing, while the base 1250 is located on the lower side of the drawing. For example... Figure 5B As shown, both the base 1250 and the inner extension 1230 are annular. As described above, the lower impeller component 1200 (particularly the lower hub sidewall portion 1290) is part of the complete hub sidewall portion 1500, and therefore also has a tapered outer peripheral surface. Therefore, in the embodiments of this application, the diameter D2 of the base 1250 is greater than the diameter D1 of the inner extension 1230. This results in a tapered structure that facilitates assembly.

[0093] Furthermore, each fitting portion 1210 has a fitting surface 1215, which corresponds to the upper impeller member 1100 and serves as a surface supporting the upper impeller member 1100. For example, the fitting surface 1215 may be the bottom surface of a U-shaped groove (e.g., Figure 3As shown), and the support wall 1135 of the upper impeller component 1100 ( Figure 3 (As will be described below) can be disposed within this U-shaped groove. In embodiments of this application, such as Figure 5C As shown, each mating surface 1215 has an upper end portion 1215A and a lower end portion 1215B. The shortest distance (distance S3) between the upper end portion 1215A and the base 1250 is different from the shortest distance (distance S4) between the lower end portion 1215B and the base 1250. Specifically, distance S3 can be greater than distance S4. In this case, the mating surface 1215 is formed as an inclined surface with an angle relative to the base 1250, and a generally triangular groove, namely the mating portion 1210, is formed on the side of the lower impeller member 1200.

[0094] Next refer to Figures 6A to 6D Explain the construction of the upper impeller component 1100. Figure 6A A front perspective view of the upper impeller component 1100 is shown according to some embodiments of this application. Figure 6B A rear perspective view of the upper impeller component 1100 is illustrated according to some embodiments of this application. Figure 6C The illustration shows a right-side view of the upper impeller component 1100 according to some embodiments of this application. Figure 6D A rear view of the upper impeller component 1100 is shown according to some embodiments of this application.

[0095] As described above, the impeller structure 1000 according to this application may include a plurality of (e.g., five) upper impeller components 1100. Each upper impeller component 1100 in the impeller structure 1000 may have the same or substantially similar construction. Figures 6A to 6D The image shows only one of the upper impeller components 1100 for illustration purposes.

[0096] The upper impeller component 1100 may include a blade portion 1110, an upper hub sidewall portion 1130, and a fixing portion 1150. In some embodiments, the blade portion 1110, the upper hub sidewall portion 1130, and the fixing portion 1150 are integrally formed to improve the ease of assembly.

[0097] The blade portion 1110 extends outward from the upper hub sidewall portion 1130 in the radial direction of the impeller structure 1000, such as... Figure 4A and Figure 4B As shown. The shape of the blade portion 1110 can be determined according to actual needs and is not limited to the embodiment shown in this application. Here, as Figure 6A As shown, the extension direction of the blade portion 1110 is set as the first extension direction R1.

[0098] The upper hub sidewall portion 1130 can be fitted into one of the fitting portions 1210 of the lower impeller component 1200, and together with the lower hub sidewall portion 1290 of the lower impeller component 1200, constitutes the aforementioned complete hub sidewall portion 1500. Figure 4A and Figure 4B In some embodiments, such as Figure 6A As shown, the upper hub sidewall portion 1130 extends from one end of the blade portion 1110 in a second extending direction R2. Furthermore, the first extending direction R1 and the second extending direction R2 form a first obtuse angle O1.

[0099] Furthermore, the upper hub sidewall portion 1130 may include a support wall 1135 for fitting into one of the fitting portions 1210, and corresponding to the fitting surface 1215 of the fitting portion 1210. In the fitted state, as... Figure 3 As shown, the support wall 1135 contacts and supports the mating surface 1215. This allows for the positioning of the upper impeller component 1100 relative to the lower impeller component 1200. Figure 6B As shown, the support wall 1135 can extend from the blade portion 1110 toward the lower impeller member 1200. For example, since the lower impeller member 1200 is located below the upper impeller member 1100 (e.g. Figure 4A As shown), the supporting wall 1135 can extend downwards. Therefore, as Figure 6C As shown, compared to the blade portion 1110 extending in the radial direction, the extending direction of the support wall 1135 is ( Figure 6C The third extending direction R3 shown is the same as the extending direction of the blade portion 1110 from the upper hub sidewall portion 1130. Figure 6C The first extension direction R1 shown is different.

[0100] To correspond to the fitting portion 1210 of the lower impeller component 1200, the support wall 1135 may also have an inclined surface with an angle relative to the horizontal direction. Specifically, as... Figure 6D As shown, in the upper impeller component 1100, the support wall 1135 has a first end 1135A and a second end 1135B. The shortest distance (distance S1) between the first end 1135A and the fixing part 1150 and the shortest distance (distance S2) between the second end 1135B and the fixing part 1150 are different. More specifically, the first end 1135A may correspond to the upper end 1215A of the mating surface 1215. Figure 5C The second end 1135B may correspond to the lower end 1215B of the mating surface 1215. Figure 5CSince the locking surface 1151 of the fixing part 1150 is approximately parallel to the bottom surface of the base 1250, the sum of distances S1 and S3, and the sum of distances S2 and S4, can be considered the same. Therefore, distance S1 can be less than distance S2. This improves the tightness of the fit between the upper impeller component 1100 and the lower impeller component 1200.

[0101] The fixing part 1150 is used to fix the inner extension 1230 of the lower impeller component 1200. Figure 5A The fixing part 1150 has a locking surface 1151. Figure 6B The locking surface 1151 is parallel to and contacts the inner extension 1230. Furthermore, the fixing portion 1150 has at least one first screw hole 1153, corresponding to at least one second screw hole 1235 located in the inner extension 1230. The first screw hole 1153 and the second screw hole 1235 can be locked together by a component of sufficient strength, such as a screw. In this way, the upper impeller component 1100 and the lower impeller component 1200 can overlap and be fixed in the vertical direction (parallel to the axial direction), enhancing structural stability. In the embodiment shown in this application, the fixing portion 1150 of each upper impeller component 1100 has two first screw holes 1153, but the number of first screw holes 1153 is not limited to this and can be determined according to actual needs. Furthermore, the number of second screw holes 1235 on the inner extension 1230 corresponds to the number of first screw holes 1153.

[0102] Furthermore, the upper impeller component 1100 may also include a third threaded hole 1190. For example... Figures 6A to 6D As shown, the third screw hole 1190 is located on the outer peripheral surface of the upper hub sidewall portion 1130. In embodiments where the third screw hole 1190 is provided, the lower impeller component 1200 may also include a second fixing portion 1270. Figure 5A and Figure 5B The third screw hole 1190 corresponds to the second fixing part 1270 located on the lower impeller component 1200. The third screw hole 1190 and the second fixing part 1270 can be locked together by screws or other components. This further enhances the structural stability of the impeller structure 1000.

[0103] In addition, such as Figure 6A and Figure 6B As shown, in the fixing portion 1150 of the upper impeller component 1100, at least two ring balancing structures 1155 are provided on the side opposite to the locking surface 1151 (e.g., the side above the drawing). The ring balancing structures 1155 can be used to provide a balancing device that provides operational stability to the fan structure 10 and improves the operational efficiency of the fan structure 10.

[0104] Next refer to Figure 7 , Figure 7The illustrations depict some embodiments according to this application. Figure 4A The diagram shows a three-dimensional cross-sectional view of the impeller structure 1000.

[0105] In some embodiments, such as Figure 7 As shown, the side wall of the rotor housing 110 is provided with at least one first through hole T1. Figure 7 In the illustrated embodiment, the first perforation T1 is exemplified as being disposed on the radial sidewall of the rotor housing 110. In some other embodiments, the first perforation T1 may also be disposed on the top sidewall of the rotor housing 110. The number and location of the first perforations T1 are not particularly limited and can be determined according to actual needs.

[0106] In some embodiments, such as Figure 7 As shown, at least one second through hole T2 is formed between the rotor housing 110 and the lower impeller component 1200, or between the rotor housing 110 and a plurality of upper impeller components 1100. Figure 7 In the illustrated embodiment, the second perforation T2 is exemplified as being disposed between the upper impeller component 1100 and the rotor housing 110. The number and location of the second perforations T2 are not particularly limited and can be determined according to actual needs.

[0107] The first perforation T1 and the second perforation T2 can be used to allow airflow A to pass through. Specifically, when the impeller structure 1000 rotates, both sides of the impeller structure 1000 ( Figure 7 A pressure difference is generated between the lower and upper sides of the impeller structure 1000, which promotes airflow. At this time, by setting the first perforation T1 and the second perforation T2, the airflow A can flow through the interior of the impeller structure 1000, achieving the effect of heat dissipation and further improving the heat dissipation efficiency.

[0108] In summary, by utilizing the impeller structure 1000 provided in this application, the upper impeller member 1100, including the blade portion 1110, and the lower impeller member 1200, connected to the rotor housing 110 of the motor rotor 100, can be securely locked together. The metal lower impeller member 1200, which contacts the rotor housing 110, can quickly transfer heat from inside the rotor housing 110 to the outside, and then dissipate heat by turbulent air movement via the blade portion 1110. This ensures the positioning of the fan blades and effectively dissipates the heat generated by the operation of the motor rotor 100, thereby improving heat dissipation efficiency.

[0109] While the embodiments and advantages of this application have been disclosed above, it should be understood that any person skilled in the art can make modifications, substitutions, and refinements without departing from the spirit and scope of this application. Furthermore, the scope of protection of this application is not limited to the processes, machines, manufacturing, material composition, apparatus, methods, and steps described in the specific embodiments herein. Any person skilled in the art can understand from the disclosure of this application any existing or future developed processes, machines, manufacturing, material composition, apparatus, methods, and steps that can perform substantially the same function or obtain substantially the same results in the embodiments described herein, and can be used according to this application. Therefore, the scope of protection of this application includes the aforementioned processes, machines, manufacturing, material composition, apparatus, methods, and steps. In addition, each claim constitutes an individual embodiment, and the scope of protection of this application also includes combinations of various claim claims and embodiments.

Claims

1. An impeller structure, characterized in that, include: Multiple upper impeller components, each upper impeller component comprising: One leaf section extends in a first extending direction; An upper hub sidewall portion, the upper hub sidewall portion extending from one end of the blade portion in a second extending direction, wherein the first extending direction and the second extending direction form a first obtuse angle; and A fixing part, wherein the blade part, the upper hub sidewall part, and the fixing part are integrally formed; and The following impeller components include: The lower hub sidewall portion is combined with the upper hub sidewall portion to form a complete hub sidewall portion; A plurality of fitting portions, each corresponding to a plurality of the upper impeller components, and each fitting portion fitting into one of the plurality of upper impeller components; and An inner extension extends toward the central axis of the lower impeller component, and the fixing part is fixed to the inner extension.

2. The impeller structure according to claim 1, characterized in that, Each of the upper hub sidewall portions includes a support wall for fitting into one of the plurality of fitting portions.

3. The impeller structure according to claim 2, characterized in that, In each of these upper impeller components, The support wall extends from the blade section toward the lower impeller component, and The direction of extension of the support wall is different from the direction of extension of the blade portion from the upper hub sidewall portion.

4. The impeller structure according to claim 2, characterized in that, In each of the upper impeller components, the support wall has a first end and a second end, and the shortest distance between the first end and the fixing part and the shortest distance between the second end and the fixing part are different; The lower impeller component also includes a base located on the side opposite to the inner extension; and Each of the fitting portions includes a fitting surface, each fitting surface having an upper end and a lower end, and the shortest distance between the upper end and the base and the shortest distance between the lower end and the base are different.

5. The impeller structure according to claim 1, characterized in that, The lower impeller component also includes a base located on the side opposite to the inner extension; Both the base and the inner extension are annular; and The diameter of the base is greater than the diameter of the inner extension.

6. The impeller structure according to claim 1, characterized in that, The outer circumferential surface of the complete wheel hub sidewall is a conical surface.

7. The impeller structure according to claim 1, characterized in that, The fixing part has at least one first screw hole, corresponding to at least one second screw hole located in the inner extension.

8. The impeller structure according to claim 1, characterized in that, Each of the upper impeller components also includes a third threaded hole located on an outer peripheral surface of the sidewall portion of the upper hub; and Each of the third screw holes corresponds to a second fixing part located on the lower impeller component.

9. The impeller structure according to claim 1, characterized in that, In each of the fixing parts, at least two ring balancing structures are provided on the opposite side of a locking surface of the fixing part.

10. The impeller structure according to claim 1, characterized in that, The lower impeller component is made of metallic material.

11. The impeller structure according to claim 1, characterized in that, The impeller structure also includes: A rotor housing, wherein at least one rotor magnetic pole is provided on the inner side of the rotor housing, and the lower impeller component or a plurality of the upper impeller components are assembled in the rotor housing.

12. The impeller structure according to claim 11, characterized in that, The rotor housing has at least one first perforation on its top or radial sidewall for allowing an airflow to pass through.

13. The impeller structure according to claim 11, characterized in that, At least one second perforation is formed between the rotor housing and the lower impeller component or between the rotor housing and the plurality of upper impeller components, the second perforation being used to allow an airflow to pass through.

14. A fan structure, characterized in that, include: certain number; as well as The impeller structure according to any one of claims 1 to 13, wherein the stator causes the impeller structure to rotate.

15. The fan structure according to claim 14, characterized in that, The fan structure also includes: A circuit board assembly for enabling the stator to rotate the impeller structure.

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