Motor and impeller dynamic balance adjustment structure and fan

Abstract

The application provides a motor and a dynamic balance adjusting structure of an impeller and a fan, which comprises a motor with an angular scale and a rotating shaft with an angular scale, the 0-degree position of the motor is aligned with the 0-degree position of the rotating shaft, and the motor end of the motor and the rotating shaft is fixedly connected. The rotating shaft is provided with an angular adjusting fixing part with an angular scale at the impeller end, the 0-degree position of the angular adjusting fixing part is aligned with the 0-degree position of the rotating shaft. The rotating shaft is further provided with an impeller with an angular scale at the impeller end, and the hub of the impeller is clamped with the angular adjusting fixing part. The eccentric angle of the motor and the rotating shaft is installed at an angle of 180 degrees with the eccentric angle of the impeller. The rotating shaft is further provided with a limiting part for limiting the axial displacement of the impeller. The dynamic balance adjusting structure can greatly reduce the vibration of the motor, the rotating shaft and the impeller caused by the dynamic balance error during rotation, and reduce the dynamic balance test in the production and manufacturing process, and improve the production efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dynamic balancing of electric machines and impellers, in particular to a dynamic balancing adjustment structure of electric machines and impellers and a fan. BACKGROUND

[0002] Due to the error of production process or the limitation of production conditions, the electric machines and impellers of the existing fans have more or less unbalance, and then dynamic balancing error occurs, which will cause the electric machines and impellers to shake when rotating, and then the whole fan will shake and produce noise, which greatly affects the use experience.

[0003] When installing the electric machines and impellers, the dynamic balancing error caused by production error may be superimposed, and the superimposed dynamic balancing error will be larger, resulting in more intense vibration. If the manufacturer tests the dynamic balance of each fan, the production efficiency will be reduced and the production cost will be increased. Moreover, the user cannot accurately master the dynamic unbalance angle and size when installing the fan, so the dynamic balance cannot be adjusted during the installation of the fan, which increases the installation difficulty and reduces the use experience.

[0004] In addition, the existing fan does not have a damping structure, which will cause the vibration caused by the rotation of the electric machine and the impeller to be transmitted through the shell, and then vibration noise is generated. Long-term vibration will also cause the fan components to fall off or be damaged due to vibration, thereby affecting the service life. SUMMARY

[0005] The purpose of the present application is to overcome the shortcomings of the prior art, and to provide a dynamic balancing adjustment structure of electric machines and impellers and a fan to overcome the problems that the dynamic balance cannot be adjusted during the installation of the fan and that the damping structure is not provided in the prior art.

[0006] The present application provides a dynamic balancing adjustment structure of electric machines and impellers, which comprises: an electric machine with an angular scale rotor and a rotating shaft with an angular scale, the 0° position on the rotor is aligned with the 0° position on the rotating shaft, and the electric machine end of the rotor and the rotating shaft is fixedly connected; the rotating shaft end of the rotating shaft is provided with an angular adjustment fixing piece with an angular scale, the 0° position on the angular adjustment fixing piece is aligned and installed with the 0° position on the rotating shaft; the rotating shaft end of the rotating shaft is further provided with an impeller with an angular scale, the hub of the impeller is clamped with the angular adjustment fixing piece; the unbalance angle of the electric machine and the rotating shaft is installed at an angle of 180° with the unbalance angle of the impeller; the rotating shaft is further provided with a limiting piece for limiting the axial displacement of the impeller.

[0007] Further, a plurality of first fixing teeth are uniformly distributed on the clamping end surface of the angle adjustment fixing member along the circumference, the first fixing teeth are long strips and extend along the radial direction; the clamping end surface of the hub has second fixing teeth corresponding to the first fixing teeth, the first fixing teeth and the second fixing teeth correspondingly engage to drive the hub to rotate synchronously.

[0008] Further, the angle adjustment fixing member is clamped on the rotating shaft through a positioning pin in the axial direction, and the rotating shaft drives the angle adjustment fixing member to rotate synchronously.

[0009] In another embodiment of the present application, the angle adjustment fixing member has a D-shaped fixing shaft hole at the center, the impeller end of the rotating shaft is a D-shaped shaft, the D-shaped shaft is inserted into the D-shaped fixing shaft hole, and the rotating shaft drives the angle adjustment fixing member to rotate synchronously.

[0010] In another embodiment of the present application, a D-shaped shaft sleeve with a D-shaped shaft hole is arranged in the shaft hole at the center of the angle adjustment fixing member, the circumferential outer wall of the D-shaped shaft sleeve and the inner wall of the angle adjustment fixing member have synchronous teeth parallel to the axial direction and meshing with each other; the impeller end of the rotating shaft is a D-shaped shaft, the D-shaped shaft is inserted into the D-shaped fixing shaft hole, and the rotating shaft drives the angle adjustment fixing member to rotate synchronously.

[0011] In the embodiment of the present application, the impeller is a turbine, and the hub of the turbine is arranged between the angle adjustment fixing member and the motor.

[0012] The present application also provides a fan, which comprises: a dynamic balance adjustment structure of a motor and an impeller, the motor is fixed on a fan shell through a motor support; a fan cover is fixedly arranged on the fan shell, and the impeller is arranged in the fan cover.

[0013] Further, a flexible connecting piece for reducing the vibration transmission efficiency is arranged at the connection between the motor support and the fan shell.

[0014] Further, the outer wall of the flexible connecting piece has an annular clamping groove, and the motor support is clamped in the annular clamping groove; the flexible connecting piece has a fixing hole at the axis, and a fixing column on the fan shell passes through the fixing hole and is fixedly connected to the flexible connecting piece through a screw.

[0015] Further, a base is fixedly connected to the fan shell through a vertical rod.

[0016] According to the above-mentioned embodiments, the motor and the impeller dynamic balance adjustment structure and the fan provided by the application have the following advantages: compared with the prior art, the dynamic balance adjustment structure can install the motor, the rotating shaft and the impeller by the scale mark and the equipment identification of the weight deviation angle when the user installs the motor, the rotating shaft and the impeller, and can partially or completely offset the dynamic balance deviation value of the motor, the rotating shaft and the impeller by the adjustment of the installation angle. That is, the weight deviation angle on the motor and the rotating shaft is installed at an angle of 180° with the weight deviation angle on the impeller, the dynamic balance error is offset, and the vibration superposition caused by the dynamic balance deviation is avoided, and the vibration caused by the dynamic balance error is reduced.

[0017] In addition, the motor and the shell are connected through the flexible member, the transmission efficiency of the vibration can be further reduced, the vibration reduction effect is achieved, and the noise caused by the vibration can be reduced.

[0018] It should be understood that the above general description and the following detailed embodiments are only exemplary and explanatory, and cannot limit the scope of the application claimed by the application. BRIEF DESCRIPTION OF DRAWINGS

[0019] The following drawings are part of the specification of the application, which illustrate the example embodiments of the application, and the accompanying drawings and the description of the specification are used to illustrate the principles of the application.

[0020] Figure 1 The structural diagram of the motor and the impeller dynamic balance adjustment structure provided by the application is shown in the first embodiment.

[0021] Figure 2 The structural diagram of the motor and the impeller dynamic balance adjustment structure provided by the application is shown in the first embodiment.

[0022] Figure 3 The structural diagram of the motor and the impeller dynamic balance adjustment structure provided by the application is shown in the second embodiment.

[0023] Figure 4 The structural diagram of the motor and the impeller dynamic balance adjustment structure provided by the application is shown in the second embodiment.

[0024] Figure 5 The structural diagram of the motor and the impeller dynamic balance adjustment structure provided by the application is shown in the third embodiment.

[0025] Figure 6 The structural diagram of the motor and the impeller dynamic balance adjustment structure provided by the application is shown in the third embodiment.

[0026] Figure 7 The structural diagram of the motor and the impeller dynamic balance adjustment structure provided by the application is shown in the fourth embodiment.

[0027] Figure 8The structural diagram of the angle adjustment fixing part embodiment one in the motor and impeller dynamic balance adjustment structure provided by the present application.

[0028] Figure 9 The structural diagram of the angle adjustment fixing part embodiment two in the motor and impeller dynamic balance adjustment structure provided by the present application.

[0029] Figure 10 The structural diagram of the angle adjustment fixing part embodiment three in the motor and impeller dynamic balance adjustment structure provided by the present application.

[0030] Figure 11 The installation structural diagram of the positioning pin embodiment one in the motor and impeller dynamic balance adjustment structure provided by the present application.

[0031] Figure 12 The installation structural diagram of the positioning pin embodiment two in the motor and impeller dynamic balance adjustment structure provided by the present application.

[0032] Figure 13 The installation sectional view of the positioning pin embodiment three in the motor and impeller dynamic balance adjustment structure provided by the present application.

[0033] Figure 14 The installation structural diagram of the positioning pin embodiment three in the motor and impeller dynamic balance adjustment structure provided by the present application.

[0034] Figure 15 The installation sectional view of the positioning pin embodiment four in the motor and impeller dynamic balance adjustment structure provided by the present application.

[0035] Figure 16 The installation structural diagram of the positioning pin embodiment four in the motor and impeller dynamic balance adjustment structure provided by the present application.

[0036] Figure 17 The installation sectional view of the positioning pin embodiment five in the motor and impeller dynamic balance adjustment structure provided by the present application.

[0037] Figure 18 The installation structural diagram of the positioning pin embodiment five in the motor and impeller dynamic balance adjustment structure provided by the present application.

[0038] Figure 19 The structural diagram of the fan embodiment one provided by the present application.

[0039] Figure 20 The overall structural diagram of the fan embodiment one provided by the present application.

[0040] Figure 21 The overhead structural diagram of the fan embodiment one provided by the present application.

[0041] Figure 22Structure diagram of the second embodiment of the fan provided by the present application.

[0042] Figure 23 Structure diagram of the third embodiment of the fan provided by the present application.

[0043] Figure 24 Structure diagram of the fourth embodiment of the fan provided by the present application.

[0044] Figure 25 Structure diagram of the fifth embodiment of the fan provided by the present application.

[0045] Figure 26 Structure diagram of the sixth embodiment of the fan provided by the present application.

[0046] Figure 27 Structure diagram of the seventh embodiment of the fan provided by the present application.

[0047] Explanation of reference signs:

[0048] Motor, 2-rotating shaft, 3-angle adjustment fixing piece, 4-impeller, 5-positioning pin, 6-D-shaped shaft sleeve, 7-spring, 8-motor support, 9-fan shell, 10-fan cover, 11-flexible connecting piece, 12-stand, 13-base, 14-pan-tilt motor, 15-pan-tilt connecting rod, 16-pan-tilt rotating shaft;

[0049] 301-first fixed tooth;

[0050] 401-hub, 402-blade, 403-second fixed tooth;

[0051] 501-positioning pin core, 502-outward flange structure, 503-end cap structure;

[0052] 601-synchronous tooth. DETAILED DESCRIPTION

[0053] The detailed description of the various exemplary embodiments of the present application should not be considered to be limiting of the present application, but merely illustrative of certain aspects, features and embodiments of the present application.

[0054] Many modifications and variations of the present application described in the specification are possible without departing from the scope or spirit of the present application. Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the present application. The specification and examples provided are exemplary only.

[0055] The present application provides a dynamic balance adjustment structure of a motor and an impeller, as shown in the structure diagram of the first embodiment of the adjustment structure. Figure 1 The present application provides a dynamic balance adjustment structure of a motor and an impeller, as shown in the structure diagram of the first embodiment of the adjustment structure. Figure 19The adjustment structure is assembled using a diagram. In the embodiment, the dynamic balance adjustment structure comprises a motor 1 with an angular scale on a rotor and a rotating shaft 2 with an angular scale. In this embodiment, the motor is an external rotor motor, and the angular scale on the rotor outer wall is arranged around the rotor outer wall, i.e., the rotor outer wall has a 360-degree scale. The 0° position of the angular scale on the rotor outer wall is a long strip scale mark. Similarly, the rotating shaft 2 also has a one-turn angular scale mark or only the 0° position has a scale value, and the scale mark at the 0° position is a long strip mark. When the rotating shaft 2 and the motor 1 are fixedly installed together, first, the 0° position on the rotor is aligned with the 0° position on the rotating shaft 2, and then the rotor and the motor end of the rotating shaft 2 are fixedly connected. In the production process of the motor, the same batch of motors uses the same mold, and the mold has a scale. Therefore, the same batch of motors has the same unbalance position, and the angular scale on the motor corresponding to the unbalance position of the same batch of motors is also the same, i.e., the unbalance angle is the same. Similarly, the same batch of rotating shafts 2 also have the same unbalance angle. Therefore, the 0° position on the rotor outer wall is fixedly installed corresponding to the 0° position on the rotating shaft 2, which can ensure that the unbalance angle of the combination of the same batch of rotors and rotating shafts 2 is fixedly unchanged.

[0056] As shown in Figure 8 , the impeller end of the rotating shaft 2 is provided with an angular adjustment fixing member 3 with an angular scale, and the 0° position on the angular adjustment fixing member 3 is aligned and installed with the 0° position on the rotating shaft 2, which facilitates finding the accurate unbalance angle of the motor 1 and the rotating shaft 2 on the angular adjustment fixing member 3.

[0057] The impeller end of the rotating shaft 2 is also provided with an impeller 4 with an angular scale, and the hub of the impeller 4 is clamped with the angular adjustment fixing member 3. In this embodiment, the hub 401 of the impeller 4 is sleeved on the rotating shaft 2 and located at the position outside the angular adjustment fixing member 3 close to the impeller end of the rotating shaft 2.

[0058] As shown in Figure 2 , the hub 401 has an angular scale. In addition, the impeller 4 is an axial flow impeller, which comprises a hub 401 and a blade 402. During the manufacturing process of the impeller, there will be some errors, which will cause the balance center of the impeller 4 not to be at the shaft center, and thus will cause rotary vibration. Therefore, when the impeller 4 is installed, the unbalance angle of the motor 1 and the rotating shaft 2 and the unbalance angle of the impeller 4 are installed at an angle of 180°, so that the two unbalance values offset each other, the total unbalance value is reduced, and the vibration is reduced.

[0059] Because the same batch of motor 1 and the angle of fixed connection of rotating shaft 2 are the same, the deviation angle of the combined motor 1 and rotating shaft 2 is almost the same, so only one or several motor 1 and rotating shaft 2 combination body deviation angle needs to be tested, and the angle value is marked. Because the 0° position of the angle adjusting fixing member 3 is the same as the 0° position of the rotating shaft 2, the installation angle of the impeller 4 relative to the angle adjusting fixing member 3 can be determined by the marked deviation angle value. The best installation angle of the embodiment is that the deviation angle of the impeller 4 is 180° with the deviation angle of the motor 1 and the rotating shaft 2, so as to realize the mutual offset of the deviation angle, and reduce the total deviation value of the motor 1, the rotating shaft 2 and the impeller 4 as much as possible, and reduce the vibration caused by the deviation.

[0060] The rotating shaft 2 is also provided with a limiting member for limiting the axial displacement of the impeller 4.

[0061] In the specific embodiment of the application, a plurality of first fixing teeth 301 are uniformly distributed on the clamping end face of the angle adjusting fixing member 3 along the circumference, and the first fixing teeth 301 are long strips and extend in the radial direction.

[0062] The clamping end face of the hub 401 has second fixing teeth 403 corresponding to the first fixing teeth 301, and the first fixing teeth 301 and the second fixing teeth 403 are engaged correspondingly to drive the hub 401 to rotate synchronously.

[0063] The first fixing teeth 301 and the second fixing teeth 403 are engaged with each other, which not only can realize the synchronous rotation of the rotating shaft 2 and the impeller 4, but also can ensure that the impeller 4 always maintains the same installation angle with the rotating shaft 2 during the rotation of the impeller 4. In addition, when the first fixing teeth 301 and the second fixing teeth 403 are engaged with each other, glue is arranged between the first fixing teeth 301 and the second fixing teeth 403 to firmly fix the engaged first fixing teeth 301 and the second fixing teeth 403 together.

[0064] In the specific embodiment of the application, as shown in Figure 11 and Figure 19 The angle adjusting fixing member 3 is axially clamped on the rotating shaft 2 through the positioning pin 5, and the rotating shaft 2 drives the angle adjusting fixing member 3 to rotate synchronously.

[0065] Specifically, the positioning pin 5 and the positioning pin hole on the rotating shaft 2 are in interference fit to avoid the positioning pin 5 from falling off due to centrifugal force during rotation. The side of the angle adjusting fixing member 3 corresponding to the positioning pin 5 has a positioning pin groove, and the positioning pin 5 is axially clamped in the positioning pin groove to realize the synchronous rotation of the angle adjusting fixing member 3 and the rotating shaft 2.

[0066] In the specific embodiment of the application, there are five kinds of positioning pin embodiments.

[0067] As shown in Figure 11And Figure 19 The structure diagram of the first embodiment of the positioning pin is shown. In this embodiment, the positioning pin 5 is an eccentric positioning pin, which has a shorter length relative to the axis of the rotating shaft, and can realize the installation of the angle adjustment fixing member 3 at a unique angle. In addition, in this embodiment, the positioning pin has a through hole at the axis.

[0068] As shown in Figure 12 And Figure 23 The structure diagram of the second embodiment of the positioning pin is shown. The difference between this embodiment and the first embodiment of the positioning pin is that, in this embodiment, the positioning pin 5 has the same length at both ends relative to the axis of the rotating shaft 2, which reduces the increase of the eccentricity of the rotating shaft 2 caused by the eccentricity of the positioning pin.

[0069] As shown in Figure 13 And Figure 14 The structure diagram of the third embodiment of the positioning pin is shown. The difference between this embodiment and the first embodiment of the positioning pin is that, in this embodiment, the positioning pin has a positioning pin core 501 arranged in the through hole at the axis. The positioning pin core is in interference fit with the through hole at the axis, which is used to adjust the eccentricity of the positioning pin, keep the center of gravity of the positioning pin 5 at the axis of the rotating shaft 2, and reduce the increase of the eccentricity of the rotating shaft 2 caused by the eccentricity of the positioning pin.

[0070] As shown in Figure 15 And Figure 16 The structure diagram of the fourth embodiment of the positioning pin is shown. The difference between this embodiment and the first embodiment of the positioning pin is that, in this embodiment, the positioning pin 5 has an outward flange structure 502 at one end, which can adjust the eccentricity of the positioning pin 5, keep the center of gravity of the positioning pin 5 at the axis of the rotating shaft 2, and reduce the increase of the eccentricity of the rotating shaft 2 caused by the eccentricity of the positioning pin. In addition, the positioning pin corresponds to the positioning pin groove on the angle adjustment fixing member 3, which ensures that the angle adjustment fixing member 3 is installed at a unique angle on the rotating shaft, and avoids the installation angle deviation.

[0071] As shown in Figure 17 And Figure 18 The structure diagram of the fifth embodiment of the positioning pin is shown. The difference between this embodiment and the first embodiment of the positioning pin is that, in this embodiment, the positioning pin 5 has an end cap structure at one end, which can adjust the eccentricity of the positioning pin 5, keep the center of gravity of the positioning pin 5 at the axis of the rotating shaft 2, and reduce the increase of the eccentricity of the rotating shaft 2 caused by the eccentricity of the positioning pin. In addition, the positioning pin does not have a through hole at the axis.

[0072] As shown in Figure 3 And Figure 4 Another embodiment provided by the present application is shown, which is different from the embodiment shown in Figure 1 And Figure 8 The difference between this embodiment and the embodiment shown in Figure 10The angle adjustment fixing member 3 has a D-shaped fixed shaft hole at the center, and a fixed shaft with a D-shaped hole extends outward along the axial direction. The D-shaped hole on the angle adjustment fixing member 3 is connected with the D-shaped shaft on the impeller end of the rotating shaft 2, which replaces the Figure 1 The embodiment shown in the figure.

[0073] As shown in the figure Figure 25 The application diagram of the embodiment is shown. The impeller end of the rotating shaft 2 is a D-shaped shaft, which is inserted into the D-shaped fixed shaft hole of the angle adjustment fixing member 3, and the rotating shaft 2 drives the angle adjustment fixing member 3 to rotate synchronously. The D-shaped shaft and the D-shaped shaft hole determine the unique installation angle of the angle adjustment fixing member 3.

[0074] The present application provides another embodiment, which is different from the embodiments shown in Figure 1 and Figure 8 The difference between the embodiment and the embodiments shown in the figure is that the D-shaped shaft sleeve 6 with a D-shaped fixed shaft hole is arranged in the shaft hole at the center of the angle adjustment fixing member 3, and the outer wall of the D-shaped shaft sleeve 6 and the inner wall of the angle adjustment fixing member 3 have synchronous teeth 601 which are parallel to the axial direction and mesh with each other. The meshing of the outer wall of the D-shaped shaft sleeve 6 and the synchronous teeth 601 on the inner wall of the angle adjustment fixing member 3 can realize the rotation of the rotating shaft 2 driving the angle adjustment fixing member 3.

[0075] The impeller end of the rotating shaft 2 is a D-shaped shaft, which is inserted into the D-shaped fixed shaft hole, and the rotating shaft 2 drives the angle adjustment fixing member 3 to rotate synchronously.

[0076] As shown in the figure Figure 5 , Figure 6 and Figure 9 The structural diagram of another embodiment provided by the present application is shown. The embodiment is different from the embodiment shown in Figure 1 The difference between the embodiment and the embodiment shown in the figure is that the impeller 4 is a turbine, and the hub 401 of the turbine is arranged between the angle adjustment fixing member 3 and the motor 1.

[0077] In addition, in the embodiment, the D-shaped shaft sleeve 6 with a D-shaped fixed shaft hole is arranged in the shaft hole at the center of the angle adjustment fixing member 3, and the outer wall of the D-shaped shaft sleeve 6 and the inner wall of the angle adjustment fixing member 3 have synchronous teeth 601 which are parallel to the axial direction and mesh with each other. The meshing of the outer wall of the D-shaped shaft sleeve 6 and the synchronous teeth 601 on the inner wall of the angle adjustment fixing member 3 can realize the rotation of the rotating shaft 2 driving the angle adjustment fixing member 3.

[0078] The impeller end of the rotating shaft 2 is a D-shaped shaft, which is inserted into the D-shaped fixed shaft hole, and the rotating shaft 2 drives the angle adjustment fixing member 3 to rotate synchronously.

[0079] As shown in the figure Figure 7 The structural diagram of another embodiment provided by the present application is shown. The embodiment is different from the embodiment shown inFigure 6 The difference in the illustrated embodiment is that, in this embodiment, a spring 7 is provided between the hub 401 and the rotor housing of the motor 1, and the spring 7 is sleeved on the rotating shaft 2 to achieve a floating connection of the impeller. In this embodiment, the first fixing tooth 301 and the second fixing tooth 403 are connected by adhesive.

[0080] This invention provides a fan, such as Figure 19 The diagram shown is a structural diagram of a first embodiment of the fan. In a specific implementation of this embodiment, the fan includes the aforementioned dynamic balancing structure for the motor and impeller. The motor 1 is fixed to the fan housing 9 via a motor bracket 8. A flexible connector 11 is provided at the connection between the motor bracket 8 and the fan housing 9 to reduce vibration transmission efficiency.

[0081] A fan cover 10 is fixedly installed on the fan housing 9, and the impeller 4 is installed inside the fan cover 10.

[0082] Furthermore, the outer wall of the flexible connector 11 has an annular groove, and the motor bracket 8 is snapped into the annular groove.

[0083] The flexible connector 11 has a fixing hole at its axis. The fixing post on the fan housing 9 passes through the fixing hole and is fixedly connected to the flexible connector 11 by screws. This fixing structure can avoid direct contact between the motor bracket 8 and the fan housing 9, reduce the vibration transmission efficiency, and thus reduce noise.

[0084] Furthermore, nipple studs are provided at both ends of the flexible connector 11 and on the upper and lower surfaces of the annular groove. These nipple studs are integrally formed with the flexible connector 11, which can reduce the contact area between the flexible connector 11 and the motor bracket 8 and the fan housing 9, thereby further reducing the vibration transmission efficiency.

[0085] In addition, such as Figure 20 and Figure 21 As shown, a base 13 is fixedly connected to the fan housing 9 via a support rod 12.

[0086] The fan housing 9 is also equipped with an oscillating motor 14. The oscillating motor 14 is rotatably connected to the upper end of the oscillating shaft 16 via an oscillating connecting rod 15. The lower end of the oscillating shaft 16 is fixedly connected to the upright rod 12, thereby enabling the fan housing 9 to rotate relative to the upright rod 12.

[0087] like Figure 22 The diagram shown is a structural diagram of a second embodiment of the fan provided by the present invention. This embodiment is similar to... Figure 19 The difference in the embodiment shown is that the connection between the motor bracket 8 and the fan housing 9 in this embodiment does not have a flexible connector.

[0088] like Figure 23The structural diagram of the third embodiment of the fan provided by the present application is shown in the figure. The embodiment is different from the first embodiment in that the length of the positioning pin 5 is the same at both ends relative to the axis of the rotating shaft 2, which reduces the increase of the eccentricity of the rotating shaft 2 caused by the gravity center deviation of the positioning pin. Figure 19 The difference between the embodiment shown in the figure and the first embodiment is that the length of the positioning pin 5 is the same at both ends relative to the axis of the rotating shaft 2, which reduces the increase of the eccentricity of the rotating shaft 2 caused by the gravity center deviation of the positioning pin.

[0089] As shown in the figure, the structural diagram of the fourth embodiment of the fan provided by the present application is shown in the figure. The embodiment is different from the first embodiment in that the motor support 8 and the fan shell 9 are connected without a flexible connector. Figure 24 The difference between the embodiment shown in the figure and the first embodiment is that the motor support 8 and the fan shell 9 are connected without a flexible connector. Figure 23

[0090] As shown in the figure, the structural diagram of the fifth embodiment of the fan provided by the present application is shown in the figure. The embodiment is different from the first embodiment in that the angle adjustment fixing member 3 has a D-shaped fixed shaft hole at the center and a fixed shaft extending outward in the axial direction. Figure 25 The difference between the embodiment shown in the figure and the first embodiment is that the D-shaped shaft hole of the angle adjustment fixing member 3 is connected with the D-shaped shaft hole of the impeller end of the rotating shaft 2, replacing the Figure 19 The embodiment shown in the figure shows the installation method of the positioning pin. Figure 10 Figure 19 As shown in the figure, the structural diagram of the sixth embodiment of the fan provided by the present application is shown in the figure. The embodiment is different from the first embodiment in that the motor support 8 and the fan shell 9 are connected without a flexible connector. The difference between the embodiment shown in the figure and the first embodiment is that the motor support 8 and the fan shell 9 are connected without a flexible connector.

[0091] Figure 26 As shown in the figure, the structural diagram of the seventh embodiment of the fan provided by the present application is shown in the figure. The embodiment is different from the first embodiment in that the impeller 4 is a turbine. The dynamic balance adjustment structure is as shown in the embodiment of the figure Figure 25 The difference between the embodiment shown in the figure and the first embodiment is that the motor support 8 and the fan shell 9 are connected without a flexible connector.

[0092] As shown in the figure, the structural diagram of the seventh embodiment of the fan provided by the present application is shown in the figure. The embodiment is different from the first embodiment in that the impeller 4 is a turbine. The dynamic balance adjustment structure is as shown in the embodiment of the figure Figure 27 The difference between the embodiment shown in the figure and the first embodiment is that the motor support 8 and the fan shell 9 are connected without a flexible connector. Figure 19 The difference between the embodiment shown in the figure and the first embodiment is that the motor support 8 and the fan shell 9 are connected without a flexible connector. Figure 6 The difference between the embodiment shown in the figure and the first embodiment is that the motor support 8 and the fan shell 9 are connected without a flexible connector.

[0093] The above is only a specific embodiment of the present application, and any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of the present application shall fall within the scope of the present application.​​

Claims

1. A dynamic balancing adjustment structure for a motor and an impeller, characterized in that, The dynamic balancing adjustment structure includes: a motor (1) with an angular scale on the rotor and a rotating shaft (2) with an angular scale, wherein the 0° position on the rotor is aligned with the 0° position on the rotating shaft (2), and the rotor is fixedly connected to the motor end of the rotating shaft (2); The impeller end of the rotating shaft (2) is provided with an angle adjustment fixing part (3) with an angle scale, and the 0° position on the angle adjustment fixing part (3) is aligned with the 0° position on the rotating shaft (2). The impeller end of the rotating shaft (2) is also provided with an impeller (4) with an angle scale, and the hub (401) of the impeller (4) is engaged with the angle adjustment fixing part (3); The motor (1) and the shaft (2) are installed at an angle of 180° to the impeller (4); The rotating shaft (2) is also provided with a limiting member for limiting the axial displacement of the impeller (4); The angle adjustment fastener (3) has a plurality of first fixing teeth (301) evenly distributed along the circumference on the snap-fit ​​end face. The first fixing teeth (301) are elongated and extend radially. The hub (401) has a second fixed tooth (403) on its snap-fit ​​end face that corresponds to the first fixed tooth (301). The first fixed tooth (301) and the second fixed tooth (403) mesh with each other, driving the hub (401) to rotate synchronously. The angle adjustment fixing part (3) is axially clamped on the rotating shaft (2) by the positioning pin (5), and the rotating shaft (2) drives the angle adjustment fixing part (3) to rotate synchronously.

2. The dynamic balancing adjustment structure for the motor and impeller according to claim 1, characterized in that, The angle adjustment fixing part (3) has a D-shaped fixing shaft hole at its center. The impeller end of the rotating shaft (2) is a D-shaped shaft. The D-shaped shaft is inserted into the D-shaped fixing shaft hole. The rotating shaft (2) drives the angle adjustment fixing part (3) to rotate synchronously.

3. The dynamic balancing adjustment structure for the motor and impeller according to claim 1, characterized in that, The angle adjustment fixing member (3) has a D-shaped bushing (6) with a D-shaped fixed shaft hole in the shaft hole at the center. The outer circumference of the D-shaped bushing (6) and the inner wall of the angle adjustment fixing member (3) have synchronous teeth (601) that are parallel to the axial direction and mesh with each other. The impeller end of the rotating shaft (2) is a D-shaped shaft. The D-shaped shaft is inserted into the D-shaped fixed shaft hole, and the rotating shaft (2) drives the angle adjustment fixing part (3) to rotate synchronously.

4. The dynamic balancing adjustment structure for the motor and impeller according to claim 1, 2, or 3, characterized in that, The impeller (4) is a turbine, and the hub (401) of the turbine is located between the angle adjustment fixing member (3) and the motor (1).

5. A fan, characterized in that, The fan includes the dynamic balance adjustment structure for the motor and impeller as described in any one of claims 1-4, wherein the motor (1) is fixed to the fan housing (9) by a motor bracket (8); A fan cover (10) is fixedly installed on the fan housing (9), and the impeller (4) is installed inside the fan cover (10).

6. The fan according to claim 5, characterized in that, A flexible connector (11) for reducing vibration transmission efficiency is provided at the connection between the motor bracket (8) and the fan housing (9).

7. The fan according to claim 6, characterized in that, The flexible connector (11) has an annular groove on its outer wall, and the motor bracket (8) is snapped into the annular groove. The flexible connector (11) has a fixing hole at its axis. The fixing post on the fan housing (9) passes through the fixing hole and is fixedly connected to the flexible connector (11) by screws.

8. The fan according to claim 5, characterized in that, A base (13) is fixedly connected to the fan housing (9) via a pole (12).

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