Fan blade structure of fan

Abstract

The fan blade structure comprises a main connecting cylinder, an auxiliary connecting cylinder and an installing mechanism, the auxiliary connecting cylinder is detachably connected with the main connecting cylinder, the main connecting cylinder is provided with a first fan blade set, the auxiliary connecting cylinder is provided with a second fan blade set, and the installing mechanism is arranged on the main connecting cylinder. The main connecting cylinder is further provided with an inner protruding edge used for being connected with an installation mechanism and a plurality of installation clamping grooves, and the installation clamping grooves are formed in the circumferential direction of the main connecting cylinder. The main connecting cylinder and the auxiliary connecting cylinder are assembled together, so that the air supply amount can be greatly increased, the fan is suitable for a high-speed fan, and noise generated when the fan passes through a fan blade selected at a high speed is mainly generated by vibration of the fan blade. Vibration can be greatly reduced through a mounting mechanism between the main connecting cylinder and the auxiliary connecting cylinder, and therefore noise is reduced. Meanwhile, modular production is adopted in the structure, accessories are independently produced and then assembled, the machining difficulty is lowered, and the overall structure is stable and firm in installation and high in reliability.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine structure technology, specifically to a wind turbine blade structure. Background Technology

[0002] The fan blades are a key component of a fan, and their design directly affects the fan's efficiency, noise level, and stability. Traditional fan blades, driven by a three-phase motor, generate significant vibrations. This not only produces considerable noise but also shortens the lifespan of the axial fan. Imbalance during rotation or resonance between assembled parts can lead to increasingly louder resonance noise during use, negatively impacting the user experience and lowering the product's perceived quality. Furthermore, traditional fan blades are welded to their designated positions, making installation and removal inconvenient and increasing manufacturing complexity. Utility Model Content

[0003] In order to overcome the shortcomings of existing technical solutions, this utility model provides a fan blade structure that can effectively solve the problems raised in the background art.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A fan blade structure includes a main connecting cylinder, a secondary connecting cylinder, and a mounting mechanism. The secondary connecting cylinder is detachably connected to the main connecting cylinder. The main connecting cylinder has a first blade assembly, and the secondary connecting cylinder has a second blade assembly. The main connecting cylinder also has an inner flange for connecting the mounting mechanism and several mounting slots. The mounting slots are arranged circumferentially along the main connecting cylinder. The first blade assembly includes several main blades disposed on the mounting slots, and the second blade assembly includes several secondary blades. The main blades are connected to a positioning block, a mounting plate, and a mounting shaft. The mounting shaft is connected to the inner flange. The mounting mechanism includes a connector and a buffer. The connector is connected to the secondary connecting cylinder, and the buffer is connected to the main blades. The buffer is disposed on the mounting shaft. The inner flange also has an inner shaft hole and several outer shaft holes, wherein the outer shaft holes are connected to the mounting shaft.

[0006] As a further description of the above technical solution, the main connecting cylinder and the auxiliary connecting cylinder are coaxially arranged, the diameter of the inner convex edge is larger than the diameter of the auxiliary connecting cylinder, and the inner convex edge is connected to the connecting piece.

[0007] As a further description of the above technical solution, the connector includes a connecting shaft and a fixing plate. The connecting shaft is coaxially connected to the inner protruding edge. The fixing plate is provided with a plurality of through holes for connecting and mounting shafts, which are respectively connected to the main connecting cylinder and the auxiliary connecting cylinder. The connecting shaft is fixedly connected to the auxiliary connecting cylinder.

[0008] As a further description of the above technical solution, the fixing plate is provided with a plurality of fixing nuts, the mounting shaft is coaxially arranged with the through hole, and one end of the mounting shaft is provided with a thread, and the fixing nuts are threadedly connected to the mounting shaft.

[0009] As a further description of the above technical solution, the auxiliary connecting cylinder and the auxiliary blades are integrally formed, and the number of auxiliary blades is 12, wherein the number of main blades is greater than the number of auxiliary blades.

[0010] As a further description of the above technical solution, the positioning block and the mounting plate are integrally formed, one side of the positioning block is an arc-shaped surface, which fits against the side wall of the main connecting cylinder, the mounting plate is L-shaped, and the mounting shaft is fixed below the mounting plate.

[0011] As a further description of the above technical solution, the buffer includes a spring, which is sleeved on the mounting shaft.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The fan blade structure of this utility model has at least one of the following beneficial effects during use:

[0014] The assembly of the main and auxiliary connecting cylinders significantly increases airflow, making it suitable for high-speed fans. Noise generated by the high-speed impellers is primarily due to impeller vibration. The mounting mechanism between the main and auxiliary connecting cylinders greatly reduces vibration, thus lowering noise. Furthermore, this structure utilizes modular production, assembling components individually, reducing manufacturing complexity and ensuring a stable, reliable overall structure. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the fan blade structure of a fan according to the present invention;

[0016] Figure 2 This is a side view of the blade structure of a fan according to the present invention.

[0017] Figure 3 This is a perspective structural diagram of the fan blade structure of a fan according to the present invention;

[0018] Figure 4 This is an exploded structural diagram of the fan blade structure of a fan according to the present invention;

[0019] Figure 5 This is a schematic diagram of the main blade structure of a fan blade structure according to the present invention;

[0020] Figure 6This is a partial structural diagram of the fan blade structure of a fan according to the present invention;

[0021] Figure 7 This is a schematic diagram of the main connecting cylinder structure of the fan blade structure of a fan according to the present invention;

[0022] Figure 8 This is a cross-sectional structural diagram of the fan blade structure of a fan according to the present invention.

[0023] Numbering on the map:

[0024] 1. Main connecting cylinder; 101. First fan blade assembly; 102. Main blade; 103. Positioning block; 104. Mounting insert plate; 105. Mounting shaft; 106. Mounting slot; 107. Inner protruding edge; 108. Outer shaft hole; 109. Inner shaft hole; 2. Secondary connecting cylinder; 201. Secondary fan blade assembly; 202. Secondary blade; 3. Mounting mechanism; 301. Connecting piece; 302. Buffer piece; 303. Fixing plate; 304. Connecting shaft; 305. Fixing nut. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figure 1-8 As shown, this utility model provides a fan blade structure, including a main connecting cylinder 1, a secondary connecting cylinder 2, and a mounting mechanism 3. The secondary connecting cylinder 2 is detachably connected to the main connecting cylinder 1. The main connecting cylinder 1 is provided with a first fan blade assembly 101, and the secondary connecting cylinder 2 is provided with a second fan blade assembly 201. The main connecting cylinder 1 is further provided with an inner protruding edge 107 for connecting to the mounting mechanism 3 and a plurality of mounting slots 106. The mounting slots 106 are arranged along the circumference of the main connecting cylinder 1. The first fan blade assembly 101 includes a plurality of main blades 102 disposed on the mounting slots 106, and the second fan blade assembly 201... The fan blade assembly 201 includes several auxiliary blades 202. The main blade 102 is connected to a positioning block 103, a mounting plate 104, and a mounting shaft 105. The mounting shaft 105 is connected to an inner flange 107. The mounting mechanism 3 includes a connector 301 and a buffer 302. The connector 301 is connected to the auxiliary connecting cylinder 2. The buffer 302 is connected to the main blade 102. The buffer 302 is located on the mounting shaft 105. The inner flange 107 is also provided with an inner shaft hole 109 and multiple outer shaft holes 108. The outer shaft holes 108 are connected to the mounting shaft 105.

[0027] This embodiment, by assembling the main connecting cylinder 1 and the auxiliary connecting cylinder 2 together, can significantly increase the air delivery volume. It is suitable for high-speed fans, since the noise generated by the fan passing through the high-speed blades is mainly due to the vibration of the blades. The mounting mechanism 3 between the main connecting cylinder 1 and the auxiliary connecting cylinder 2 can significantly reduce vibration, thereby reducing noise. Furthermore, this structure adopts modular production, assembling components after separate manufacturing, reducing processing difficulty, and ensuring a stable and reliable overall structure.

[0028] Furthermore, the main connecting cylinder 1 and the auxiliary connecting cylinder 2 are coaxially arranged, the diameter of the inner convex edge 107 is larger than the diameter of the auxiliary connecting cylinder 2, and the inner convex edge 107 is connected to the connector 301.

[0029] The main connecting cylinder 1 and the auxiliary connecting cylinder 2 are die-cast. The main connecting cylinder 1 has an inner convex edge 107 for connecting the auxiliary connecting cylinder 2, and a mounting groove 106 is formed at the end of the main connecting cylinder 1 along its circumference. An inner shaft hole 109 is provided in the middle of the inner convex edge 107 of the main connecting cylinder 1, and an outer shaft hole 108 corresponding to the number of main blades 102 is provided on the outer circumference of the inner convex edge 107. The main blades 102, connected to the mounting shaft 105, are inserted into the outer shaft holes 108. The mounting shaft 105 is equipped with a buffer 302. This structure uses the buffer 302 to buffer the axial impact force when the blades rotate, thereby enhancing the stability of the main connecting cylinder 1 and the auxiliary connecting cylinder 2 and reducing noise.

[0030] Furthermore, the connector 301 includes a connecting shaft 304 and a fixing plate 303. The connecting shaft 304 is coaxially connected to the inner protrusion 107. The fixing plate 303 is provided with a plurality of through holes for connecting and mounting shaft 105, which are respectively connected to the main connecting cylinder 1 and the auxiliary connecting cylinder 2. The connecting shaft 304 is fixedly connected to the auxiliary connecting cylinder 2.

[0031] The connecting shaft 304 and the auxiliary connecting cylinder 2 are integrally formed. After the connecting shaft 304 passes through the inner shaft hole 109, a cover plate is provided at the end away from the auxiliary connecting cylinder 2, which fits into the port of the main connecting cylinder 1. The cover plate abuts against the positioning block 103. A fixing plate 303 is provided at the end of the connecting shaft 304 that connects to the auxiliary connecting cylinder 2. The diameter of the fixing plate 303 is equal to the diameter of the main connecting cylinder 1, and a through hole is provided on the fixing plate 303 for installing the fixing nut 305. The mounting shaft 105 passes through the outer shaft hole 108, and the threaded end of the mounting shaft 105 is connected to the through hole, and the connection is made by the fixing nut 305.

[0032] Furthermore, the fixing plate 303 is provided with a plurality of fixing nuts 305, the mounting shaft 105 is coaxially arranged with the through hole, and one end of the mounting shaft 105 is provided with a thread, and the fixing nuts 305 are threadedly connected to the mounting shaft 105.

[0033] After the fixing nut 305 is fitted onto the mounting shaft 105, the interaction force between the spring buffer and the movable clearance between the mounting shaft 105 and the outer shaft hole 108 improves the stability of the structure.

[0034] Furthermore, the auxiliary connecting cylinder 2 and the auxiliary blade 202 are integrally formed, and the number of auxiliary blades 202 is 12, wherein the number of main blades 102 is greater than the number of auxiliary blades 202.

[0035] The main connecting cylinder 1 has 13-16 main blades 102. When there are 13 main blades 102, the air volume is the lowest, and conversely, when there are 16 main blades 102, the air volume is the highest. The auxiliary connecting cylinder 2 further drives the air supply, improving the air supply efficiency.

[0036] Furthermore, the positioning block 103 and the mounting plate 104 are integrally formed. One side of the positioning block 103 is an arc-shaped surface, which fits against the side wall of the main connecting cylinder 1. The mounting plate 104 is L-shaped, and the mounting shaft 105 is fixed below the mounting plate 104. The buffer 302 includes a spring, which is sleeved on the mounting shaft 105. The mounting shaft 105, the positioning block 103, and the mounting plate 104 are fixed as a whole. After they are installed on the main connecting cylinder 1, the cover plate connecting the auxiliary connecting cylinder 2 and the positioning block 103 are connected, and the main connecting pipe and the auxiliary connecting pipe are connected to each other through the fixing plate 303. The spring acts on the main connecting cylinder 1 and the auxiliary connecting cylinder 2. When the fan blade structure rotates, the vibration generated is offset by the spring.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A fan blade structure, characterized in that: The device includes a main connecting cylinder, a secondary connecting cylinder, and a mounting mechanism. The secondary connecting cylinder is detachably connected to the main connecting cylinder. The main connecting cylinder has a first fan blade assembly, and the secondary connecting cylinder has a second fan blade assembly. The main connecting cylinder also has an inner protruding edge for connecting the mounting mechanism and several mounting slots. The mounting slots are arranged circumferentially along the main connecting cylinder. The first fan blade assembly includes several main blades disposed on the mounting slots, and the second fan blade assembly includes several secondary blades. The main blades are connected to a positioning block, a mounting plate, and a mounting shaft. The mounting shaft is connected to the inner protruding edge. The mounting mechanism includes a connector and a buffer. The connector is connected to the secondary connecting cylinder, and the buffer is connected to the main blades. The buffer is disposed on the mounting shaft. The inner protruding edge also has an inner shaft hole and several outer shaft holes, wherein the outer shaft holes are connected to the mounting shaft.

2. The fan blade structure according to claim 1, characterized in that: The main connecting cylinder and the auxiliary connecting cylinder are coaxially arranged, the diameter of the inner convex edge is larger than the diameter of the auxiliary connecting cylinder, and the inner convex edge is connected to the connecting piece.

3. The fan blade structure according to claim 1, characterized in that: The connector includes a connecting shaft and a fixing plate. The connecting shaft is coaxially connected to the inner protruding edge. The fixing plate is provided with multiple through holes for connecting and installing shafts, which are respectively connected to the main connecting cylinder and the auxiliary connecting cylinder. The connecting shaft and the auxiliary connecting cylinder are fixedly connected.

4. The fan blade structure according to claim 3, characterized in that: The fixing plate is provided with a plurality of fixing nuts, the mounting shaft is coaxially arranged with the through hole, and one end of the mounting shaft is provided with a thread, and the fixing nuts are threadedly connected to the mounting shaft.

5. The fan blade structure according to claim 1, characterized in that: The auxiliary connecting cylinder and the auxiliary blades are integrally formed, and the number of auxiliary blades is 12, wherein the number of main blades is greater than the number of auxiliary blades.

6. The fan blade structure according to claim 1, characterized in that: The positioning block and the mounting plate are integrally formed. One side of the positioning block is an arc-shaped surface that fits against the side wall of the main connecting cylinder. The mounting plate is L-shaped, and the mounting shaft is fixed below the mounting plate.

7. The fan blade structure according to claim 1, characterized in that: The buffer includes a spring, which is sleeved on the mounting shaft.

Images