Improved axial flow fan

Abstract

The utility model discloses an improved axial flow fan, and relates to the technical field of axial flow fans, the improved axial flow fan comprises a machine shell, the machine shell is connected with a mesh enclosure, the machine shell is rotatably connected with a rotating shaft, the mesh enclosure is connected with a driving part used for driving the rotating shaft to rotate, and the outer circumferential surface of the rotating shaft is connected with a plurality of inner fan blades; each inner fan blade is connected with two elastic clamping plates, an outer fan blade is installed between the two elastic clamping plates, and the outer fan blades are connected with the elastic clamping plates through first locking pieces. When the outer fan blade is replaced, a new outer fan blade is clamped between the two elastic clamping plates, the two elastic clamping plates are pressed and clamp the outer fan blade, the elastic clamping plates can provide a pre-positioning function when the outer fan blade is installed, errors caused by manual operation are reduced, the convenience between the inner fan blade and the outer fan blade is remarkably improved, and the installation efficiency is improved. And the efficiency of mounting the inner fan blade on the outer fan blade is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of axial flow fans, in particular to an improved axial flow fan. BACKGROUND

[0002] The axial flow fan is widely used, that is, the airflow is in the same direction as the shaft of the fan blade, for example, the fan of an air conditioner outdoor unit is an axial flow type. The axial flow fan is so called because the gas flows parallel to the fan shaft. The axial flow fan is usually used in a place where the flow requirement is high and the pressure requirement is low. The axial flow fan is fixed and moves air. The axial flow fan mainly comprises a fan impeller and a casing, and has a simple structure but high data requirement.

[0003] The existing fan blade comprises an inner blade and an outer blade. The inner blade is connected to the rotating shaft through welding. The inner blade and the outer blade are connected through bolts. When the outer blade is damaged, the bolts are loosened, and a different outer blade is replaced. When the outer blade is installed, the hole on the outer blade needs to correspond to the hole on the inner blade. The hand is prone to shaking during installation, and it is difficult to ensure that the hole on the outer blade is accurately aligned with the corresponding position of the inner blade, resulting in low installation efficiency, which needs to be improved. CONTENT OF THE UTILITY MODEL

[0004] The application aims to provide an improved axial flow fan, so as to improve the efficiency of installing the outer blade on the inner blade.

[0005] The improved axial flow fan provided by the application adopts the following technical scheme: a casing is connected with a mesh cover, the casing is rotationally connected with a rotating shaft, the mesh cover is connected with a driving piece for driving the rotating shaft to rotate, the outer circumferential surface of the rotating shaft is connected with a plurality of inner blades, each inner blade is connected with two elastic clamping plates, an outer blade is installed between the two elastic clamping plates, and the outer blade is connected with the elastic clamping plates through a first locking piece.

[0006] By adopting the above technical scheme, when the outer blade is replaced, the new outer blade is clamped between the two elastic clamping plates. The two elastic clamping plates are pressed and clamp the outer blade. The elastic clamping plate can provide a pre-positioning function when the outer blade is installed, reduce the error caused by manual operation, significantly improve the convenience between the inner blade and the outer blade, and improve the efficiency of installing the inner blade on the outer blade.

[0007] Optionally, each elastic clamping plate is provided with a guide portion, and the distance between the two corresponding guide portions gradually decreases in the direction close to the elastic clamping plate.

[0008] Through the technical scheme, the guide part plays a guiding role in the installation of the outer fan blade, so that the outer fan blade can enter between the two elastic clamping plates more smoothly during the installation process, and the efficiency of installing the outer fan blade between the two elastic clamping plates is improved.

[0009] Optionally, the elastic clamping plate and the inner fan blade are detachably connected through a plurality of second locking members.

[0010] Through the technical scheme, the elastic clamping plate and the inner fan blade are detachably connected, so that the assembly between the two is more flexible and convenient. When the elasticity of the elastic clamping plate is insufficient, the elastic clamping plate can be replaced conveniently.

[0011] Optionally, the inner fan blade is provided with a positioning groove for clamping the corresponding elastic clamping plate.

[0012] Through the technical scheme, the inner fan blade is provided with the positioning groove, so that the elastic clamping plate can be clamped into the positioning groove accurately, and the positional deviation problem caused by manual operation during the installation process is effectively avoided. This design reduces the risk of misalignment between components and improves the assembly accuracy and efficiency between the elastic clamping plate and the inner fan blade.

[0013] Optionally, each inner fan blade is provided with a limiting block, the rotating shaft is provided with a limiting groove for clamping the corresponding limiting block, and the limiting block and the rotating shaft are connected through a third locking member.

[0014] Through the technical scheme, the limiting block on the inner fan blade can be clamped into the limiting groove on the rotating shaft accurately, so that the positional deviation of the inner fan blade in the radial or axial direction during the rotation process is effectively prevented, thereby improving the installation accuracy and stability between the inner fan blade and the rotating shaft. At the same time, the third locking member is used to further fix the limiting block and the rotating shaft, so that the connection between the two is more firm and reliable, and a good working state can be maintained under long-time operation or high-load working conditions.

[0015] Optionally, the output end of the driving member is connected with a connecting member, the driving member is used to drive the connecting member to rotate, the connecting member includes a connecting plate and a connecting column provided on the connecting plate, the connecting plate is connected with the output end of the driving member, the rotating shaft is provided with a rotating hole for the connecting column to pass through, and the connecting column is connected with a fixing member for fixing the rotating shaft on the connecting member.

[0016] Through the technical scheme, when the inner fan blade and the outer fan blade need to be cleaned, the fixing member loosens the rotating shaft, so that the rotating shaft, the inner fan blade and the outer fan blade can be detached from the connecting member, so that the rotating shaft, the inner fan blade and the outer fan blade are separated from the mesh cover, and cleaning is facilitated.

[0017] Optionally, the fixing member is a fixing block threadedly connected to the connecting column, and the rotating shaft is clamped by the fixing block and the connecting plate.

[0018] By using the above technical scheme, the threaded connection of the fixing block and the connecting column enables the rotating shaft to be firmly clamped between the fixing block and the connecting plate, effectively preventing the rotating shaft from loosening or deviating during high-speed operation. Meanwhile, this structure simplifies the assembly process and facilitates subsequent maintenance and component replacement.

[0019] Optionally, the connecting column is threadedly connected with a fourth locking member, and the fixing block is provided with a mounting hole through which one end of the fourth locking member passes, and the external thread direction of the fourth locking member is opposite to that of the connecting column.

[0020] By using the above technical scheme, the connecting column is threadedly connected with the fixing block, and the fourth locking member passes through the mounting hole and is threadedly connected with the connecting column, further enhancing the reliability of the fixation. Since the external thread direction of the fourth locking member is opposite to that of the connecting column, the loosening of the fixing block during rotation is reduced.

[0021] Optionally, the connecting plate is provided with a plurality of synchronous blocks, and the rotating shaft is provided with synchronous grooves for the corresponding synchronous blocks to be clamped.

[0022] By using the above technical scheme, the connecting plate and the rotating shaft are precisely positioned through the cooperation of the synchronous blocks and the synchronous grooves, effectively avoiding the relative rotation therebetween, and ensuring the stability of the transmission process.

[0023] Optionally, the mesh cover is connected with a plurality of support rods, and one end of each support rod away from the mesh cover is connected with the driving member.

[0024] By using the above technical scheme, the mesh cover and the driving member are connected through the plurality of support rods, enabling the driving member to be stably mounted on the mesh cover and improving the stability of the entire fan structure.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. When replacing the outer fan blade, the new outer fan blade is clamped between the two elastic clamping plates, and the two elastic clamping plates are pressed and clamped to the outer fan blade. The elastic clamping plate can provide a predetermined positioning function during installation of the outer fan blade, reduce errors caused by manual operation, significantly improve the convenience between the inner fan blade and the outer fan blade, and improve the efficiency of installing the inner fan blade on the outer fan blade.

[0027] 2. The guide portion plays a guiding role in the installation of the outer fan blade, enabling the outer fan blade to more smoothly enter between the two elastic clamping plates during installation, improving the efficiency of installing the outer fan blade between the two elastic clamping plates. Attached Figure Description

[0028] Figure 1 This is one of the overall structural schematic diagrams of an embodiment of this application, showing the support rod.

[0029] Figure 2 yes Figure 1 An enlarged view of region A.

[0030] Figure 3 This is an exploded view of an embodiment of this application.

[0031] Figure 4 yes Figure 3 A magnified view of region B.

[0032] Figure 5 This is a cross-sectional view of an embodiment of this application.

[0033] Figure 6 yes Figure 5 A magnified view of region C.

[0034] Figure 7 This is the second overall structural schematic diagram of an embodiment of this application, showing the outer fan plate.

[0035] Figure 8 yes Figure 7 A magnified view of region D.

[0036] Explanation of reference numerals in the attached drawings: 1. Housing; 2. Mesh cover; 21. Support rod; 3. Drive component; 31. Mounting groove; 4. Connecting component; 41. Connecting plate; 411. Synchronizing block; 42. Connecting column; 5. Rotating shaft; 51. Rotating hole; 52. Synchronizing groove; 53. Limiting groove; 6. Fixing component; 61. Fourth locking component; 62. Mounting hole; 7. Inner fan blade; 71. Limiting block; 72. Third locking component; 73. Positioning groove; 8. Elastic clamping plate; 81. Second locking component; 82. Guide part; 9. Outer fan blade; 91. First locking component. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1 - Appendix Figure 8 This application will be described in further detail.

[0038] This application discloses an improved axial flow fan.

[0039] Combination Figure 1 and Figure 2As shown, including the shell 1, the shell 1 is fixedly connected with the mesh cover 2, the mesh cover 2 is away from the shell 1 side through the bolt fixedly connected with the support rod 21, the support rod 21 is away from the mesh cover 2 one end is connected with the driving part 3, the driving part 3 is motor, the driving part 3 is connected with the controller (the drawing does not show), the signal output end of the controller is connected with the signal input end of the driving part 3. Each support rod 21 is away from the mesh cover 2 one end is connected with the driving part 3 through the bolt, the driving part 3 is provided with the installation slot 31 for the one end of support rod 21 to enter.

[0040] As shown in Figure 3 , Figure 4 , Figure 5 and Figure 6 , the output end of the driving part 3 is connected with the connecting piece 4, the connecting piece 4 includes the connecting plate 41 and the connecting column 42 provided on one side of the connecting plate 41, and the connecting plate 41 is fixedly connected with the output end of the driving part 3. The connecting column 42 is integrally formed with the connecting plate 41, and the radius of the connecting column 42 is greater than the radius of the connecting plate 41. The connecting column 42 is sleeved with the rotating shaft 5, the rotating shaft 5 is provided with a rotating hole 51 for the connecting column 42 to pass through, and the side of the connecting plate 41 close to the connecting column 42 is provided with four synchronous blocks 411, which are uniformly distributed around the axis of the connecting plate 41. The synchronous block 411 is integrally formed with the connecting plate 41, and the rotating shaft 5 is provided with a synchronous groove 52 for the corresponding synchronous block 411 to enter.

[0041] As shown in Figure 4 , Figure 5 and Figure 6 , the connecting column 42 is connected with the fixing part 6 for fixing the rotating shaft 5 on the connecting piece 4, and the fixing part 6 is a fixing block screwed on the connecting column 42. When the fixing block is screwed on the connecting column 42, the rotating shaft 5 is clamped by the fixing block and the connecting plate 41. The connecting column 42 is screwed with the fourth locking piece 61, which is a bolt. The fixing block is provided with a mounting hole 62 for the fourth locking piece 61 to pass through, and the external thread direction of the fourth locking piece 61 is opposite to that of the connecting column 42.

[0042] As shown in Figure 6 , Figure 7 and Figure 8 , the outer circumferential surface of the rotating shaft 5 is detachably connected with four inner fan blades 7, which are uniformly distributed around the axis of the rotating shaft 5. Each inner fan blade 7 is provided with a limiting block 71, which is a T-shaped block. The rotating shaft 5 is provided with a limiting groove 53 for the corresponding limiting block 71 to enter, and the limiting groove 53 is a T-shaped groove. The limiting block 71 is connected with the rotating shaft 5 through the third locking piece 72, which is a bolt and a nut.

[0043] As shown in Figure 6 , Figure 7 andFigure 8 As shown in the drawings, two elastic clamping plates 8 are detachably connected to the end of each inner fan blade 7 away from the rotating shaft 5, the two elastic clamping plates 8 are oppositely arranged, the inner fan blade 7 is provided with a positioning slot 73 for clamping the corresponding elastic clamping plate 8, the elastic clamping plate 8 is connected with the inner fan blade 7 through a plurality of second locking members 81, and the second locking members 81 are bolts and nuts. The end of each elastic clamping plate 8 away from the inner fan blade 7 is provided with a guide portion 82, the guide portion 82 is integrally formed with the elastic clamping plate 8, and the distance between the corresponding two guide portions 82 gradually decreases in the direction close to the elastic clamping plate 8. The outer fan blade 9 is installed between the two elastic clamping plates 8, the outer fan blade 9 is connected with the two elastic clamping plates 8 through first locking members 91, and the first locking members 91 are bolts and nuts.

[0044] The implementation principle of the improved axial flow fan is as follows:

[0045] When the outer fan blade 9 is replaced, the new outer fan blade 9 is clamped between the two elastic clamping plates 8, the two elastic clamping plates 8 are pressed and clamp the outer fan blade 9, the elastic clamping plate 8 can provide a predetermined positioning function when the outer fan blade 9 is installed, the error caused by manual operation is reduced, the convenience between the inner fan blade 7 and the outer fan blade 9 is significantly improved, and the efficiency of installing the inner fan blade 7 on the outer fan blade 9 is improved.

[0046] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. An improved axial flow fan, characterised in that: The utility model provides a kind of air conditioner, including shell, the shell is connected with mesh cover, the shell is rotatably connected with rotating shaft, the mesh cover is connected with the driving part for driving the rotating shaft rotation, the outer circumferential surface of the rotating shaft is connected with several inner sectors, each the inner sector is connected with two elastic clamping plates, and the outer sector is installed between two the elastic clamping plates, and the outer sector is connected with the elastic clamping through first locking part.

2. The improved axial fan of claim 1, wherein: Each the elastic clamping plate is provided with guide portion, and the distance between the corresponding two guide portions gradually decreases towards the direction close to the elastic clamping plate.

3. The improved axial fan of claim 1, wherein: The elastic clamping plate is detachably connected with the inner sector through several second locking parts.

4. The improved axial fan of claim 1, wherein: The inner sector is provided with positioning slot for corresponding the elastic clamping plate carding.

5. The improved axial fan of claim 1, wherein: Each the inner sector is provided with limiting block, the rotating shaft is provided with limiting slot for corresponding the limiting block carding, and the limiting block is connected with the rotating shaft through third locking part.

6. The improved axial fan of claim 1, wherein: The output end of the driving part is connected with connecting piece, the driving part is used to drive the connecting piece rotation, and the connecting piece includes connecting plate and connecting column arranged on the connecting plate.

7. The improved axial fan of claim 6, wherein: The fixing block is screwed on the connecting column, and the rotating shaft is clamped by the fixing block and the connecting plate.

8. The improved axial fan of claim 7, wherein: The connecting column is screwed with fourth locking part, and the fixing block is provided with mounting hole for one end of the fourth locking part to pass through.

9. The improved axial fan of claim 6, wherein: The outer thread direction of the fourth locking part is opposite to the outer thread direction of the connecting column.

10. The improved axial fan of claim 1, wherein: The connecting plate is provided with several synchronous blocks, and the rotating shaft is provided with synchronous slot for corresponding the synchronous block carding. The mesh cover is connected with several support rods, and the end of each support rod away from the mesh cover is connected with the driving part.

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