Motor impeller structure

Abstract

The application discloses a motor moving vane structure and relates to the technical field of motor moving vane structures.The motor moving vane structure comprises a moving vane body and a mounting hole formed in the axial direction of the moving vane body; a plurality of moving vanes are arranged around one side of the moving vane body; a labyrinth ring waterproof cover is arranged on the side of the moving vane body away from the vanes; the labyrinth ring waterproof cover is provided with a shaft sleeve corresponding to the mounting hole in the axial direction of the labyrinth ring waterproof cover; the labyrinth ring waterproof cover and the shaft sleeve are integrally formed; the labyrinth ring waterproof cover and the moving vane body are fixedly connected through welding; and the moving vane body, the shaft sleeve and the labyrinth ring waterproof cover form an integrated structure.The labyrinth ring waterproof cover and the shaft sleeve are integrally formed, and then are welded with the moving vane body to form an integrated structure, so that the size error accumulation during assembly of the split structure is eliminated, the motor can be press-fitted at one time during assembly of the motor, the assembly process is simplified, the combination of the moving vane, the labyrinth ring and the shaft is enhanced, the motor operation is more stable, and the working efficiency and the operation stability of the motor are improved.

Description

Technical Field

[0001] This application relates to the field of motor impeller technology, and in particular to motor impeller structure. Background Technology

[0002] The motor impeller is the core actuator that converts motor power into fluid kinetic energy. It is rigidly connected to the motor output shaft and drives fluid flow during high-speed rotation. At the same time, it must have a certain waterproof sealing capability to protect the internal components of the motor.

[0003] Currently, the labyrinth ring waterproof cover, shaft sleeve, and impeller in motor impeller systems are mostly manufactured and assembled as separate units. The conventional process is as follows: the impeller body, shaft sleeve, and labyrinth ring waterproof cover are machined as three independent components. During assembly, the shaft sleeve is first pressed into the central mounting hole of the impeller and fixed. Then, the labyrinth ring waterproof cover is separately fitted onto the outer circumference of the shaft sleeve and connected and fixed to the side wall of the impeller with screws or clips.

[0004] Regarding the aforementioned technologies, the inventors believe that the labyrinth ring waterproof cover, bushing, and impeller are independently manufactured components. During assembly, the dimensional deviations of each component accumulate significantly, causing the labyrinth ring waterproof cover to become eccentric or axially misaligned relative to the impeller and bushing, resulting in a decrease in the operational stability of the impeller. Utility Model Content

[0005] The purpose of this application is to provide a motor impeller structure to improve the problem that the labyrinth ring waterproof cover, the bushing and the impeller are independently machined components, and the dimensional deviations of each component accumulate seriously during assembly, resulting in the labyrinth ring waterproof cover being eccentric or axially misaligned relative to the impeller and the bushing, which leads to a decrease in the operational stability of the impeller.

[0006] The motor impeller structure provided in this application adopts the following technical solution: The motor impeller structure includes an impeller body and mounting holes opened along the axial direction of the impeller body. Several moving blades are arranged around one side of the impeller body. A labyrinth ring waterproof cover is provided on the side of the impeller body away from the moving blades. A bushing corresponding to the mounting hole is provided along the axial direction of the labyrinth ring waterproof cover. The labyrinth ring waterproof cover and the bushing are integrally formed and fixedly connected to the impeller body by welding, so that the impeller body, the bushing and the labyrinth ring waterproof cover constitute an integrated structure.

[0007] By adopting the above technical solution, the labyrinth ring waterproof cover and the bushing are integrally formed and then welded to the main body of the impeller to form an integrated structure. This eliminates the accumulation of dimensional errors during the assembly of separate structures and greatly improves the coaxiality and fitting accuracy of the three components. The integrated structure allows the motor to be assembled in one press, which simplifies the assembly process and significantly increases the mating surface with the motor shaft. This enhances the bonding force between the impeller, the labyrinth ring and the shaft, making the motor run more firmly and effectively preventing relative loosening, thereby improving the motor's working efficiency and operational stability.

[0008] Optionally, the labyrinth ring waterproof cover is provided with an abutting surface on one side of the bushing that abuts against the side wall of the moving impeller body.

[0009] By adopting the above technical solution, the contact surface of the labyrinth ring waterproof cover abuts against the side wall of the impeller body, providing a precise positioning reference for welding the two, ensuring the fit before welding, preventing welding misalignment, ensuring the reliability of the welded connection, and further improving the sealing performance and structural stability of the integrated structure.

[0010] Optionally, the labyrinth ring waterproof cover and the main body of the impeller are welded together at the edge of the contact surface by continuous circumferential welding to form a closed welded connection.

[0011] By adopting the above technical solution, a closed connection is formed by continuous circumferential welding at the edge of the contact surface. On the one hand, a continuous sealing barrier is formed, which effectively prevents water vapor and impurities from entering the motor and improves waterproof and dustproof performance. On the other hand, the connection strength between the labyrinth ring waterproof cover and the main body of the impeller is greatly enhanced, and there is no risk of cracking or loosening of the welded parts when rotating at high speed, ensuring the long-term reliability of the structure.

[0012] Optionally, the bushing has a fixing hole along its axial direction for connection with the drive shaft of the motor.

[0013] By adopting the above technical solution, the fixing hole of the bushing is directly connected to the motor drive shaft, providing reliable circumferential and axial fixation for the impeller and the drive shaft, ensuring high efficiency of power transmission, avoiding rotational slippage, making the motor power output more stable, and further improving work efficiency.

[0014] Optionally, the labyrinth ring waterproof cover has an annular sealing part on the side away from the moving impeller body, and the annular sealing parts are distributed at intervals along the radial direction of the labyrinth ring waterproof cover.

[0015] By adopting the above technical solution, the annular sealing parts of the labyrinth ring waterproof cover are distributed radially at intervals to form a labyrinth-style sealing structure. Through multiple layers of barrier, the waterproof and dustproof capabilities are greatly improved, effectively blocking the intrusion of external fluids and impurities, protecting key components such as bearings and stators inside the motor, and extending the service life of the motor.

[0016] Optionally, the moving blades are bent along the radial direction of the moving impeller body, and an airflow channel communicating with the center of the moving impeller body is formed between adjacent moving blades.

[0017] By adopting the above technical solution, the moving blades are bent radially, the airflow channel between adjacent blades is optimized to improve the fluid flow path, reduce airflow disturbance and eddy current generation, improve aerodynamic efficiency, increase fluid delivery, and at the same time reduce noise generated by airflow turbulence and improve motor performance.

[0018] Optionally, the end of the bushing that passes through the mounting hole is provided with a guide slope.

[0019] By adopting the above technical solution, the guide slope at the end of the bushing plays a guiding role during assembly, which facilitates the quick and accurate insertion of the bushing into the mounting hole of the impeller body, reduces assembly difficulty, improves assembly efficiency, and at the same time avoids scratching during assembly, protecting the surface precision and integrity of the parts.

[0020] Optionally, the bushing is chamfered at both ends of the hole wall of the fixing hole.

[0021] By adopting the above technical solution, the chamfer design at both ends of the bushing fixing hole wall reduces stress concentration when mating with the drive shaft, improving the structural strength and fatigue resistance of the bushing; on the other hand, it makes the drive shaft insertion smoother, further improving the convenience and reliability of assembly.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The labyrinth ring waterproof cover and the bushing are integrally molded and then welded to the impeller body to form an integrated structure. This eliminates the accumulation of dimensional errors during the assembly of separate structures and greatly improves the coaxiality and fitting accuracy of the three components. The integrated structure allows the motor to be assembled in one press, simplifying the assembly process while significantly increasing the mating surface with the motor shaft. This enhances the bonding force between the impeller, labyrinth ring, and shaft, making the motor run more securely and effectively preventing relative loosening. This, in turn, improves the motor's working efficiency and operational stability. 2. The mating surface of the labyrinth ring waterproof cover abuts against the side wall of the impeller body, providing a precise positioning reference for welding the two, ensuring the fit before welding, preventing welding misalignment, ensuring the reliability of the welded connection, and further improving the sealing performance and structural stability of the integrated structure; 3. Circumferential continuous welding is performed at the edge of the contact surface to form a closed connection. On the one hand, it forms a continuous sealing barrier, effectively preventing water vapor and impurities from entering the motor and improving waterproof and dustproof performance. On the other hand, it greatly enhances the connection strength between the labyrinth ring waterproof cover and the main body of the impeller, eliminating the risk of cracking or loosening of the welded parts during high-speed rotation and ensuring the long-term reliability of the structure. Attached Figure Description

[0023] Figure 1This is a schematic diagram of the overall structure of the motor impeller; Figure 2 This is a cross-sectional schematic diagram of the motor impeller structure.

[0024] In the figure, 1 is the main body of the moving impeller; 11 is the mounting hole; 12 is the moving blade; 13 is the airflow channel; 2 is the labyrinth ring waterproof cover; 21 is the contact surface; 22 is the annular sealing part; 3 is the bushing; 31 is the fixing hole; and 32 is the guide slope. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1 - Appendix Figure 2 This application will be described in further detail below.

[0026] Motor impeller structure, refer to Figure 1 and Figure 2 It includes a moving impeller body 1 made of metal material and a mounting hole 11 opened along the axial direction of the moving impeller body 1. Several radially curved moving blades 12 are arranged around one side of the moving impeller body 1. The moving blades 12 are integrally formed with the moving impeller body 1. An airflow channel 13 communicating with the center of the moving impeller body 1 is formed between adjacent moving blades 12.

[0027] Reference Figure 1 and Figure 2 A labyrinth ring waterproof cover 2 is installed on the side of the moving impeller body 1 away from the moving blade 12. The labyrinth ring waterproof cover 2 is inserted into the mounting hole 11 and the shaft sleeve 3 is inserted into it. The labyrinth ring waterproof cover 2 and the shaft sleeve 3 are integrally formed from the same metal material. The labyrinth ring waterproof cover 2 is provided with an abutting surface 21 on the side of the shaft sleeve 3 that abuts against the side wall of the moving impeller body 1. The side away from the moving impeller body 1 is provided with annular sealing parts 22 that are distributed radially at intervals.

[0028] Reference Figure 1 and Figure 2 The bushing 3 has a fixing hole 31 along its axial direction for connecting with the motor drive shaft. A guide slope 32 is provided at the end of the mounting hole 11. The two ends of the hole wall of the fixing hole 31 are chamfered. During assembly, the bushing 3 is guided into the mounting hole 11 of the impeller body 1 through the guide slope 32, so that the abutting surface 21 of the labyrinth ring waterproof cover 2 is tightly abutted against the side wall of the impeller body 1. Then, continuous circumferential welding is performed on the edge of the abutting surface 21 to form a closed welded connection, thereby making the impeller body 1, the bushing 3 and the labyrinth ring waterproof cover 2 an integrated structure.

[0029] The implementation principle of this application embodiment is as follows: By integrally molding the labyrinth ring waterproof cover 2 and the shaft sleeve 3, the processing and assembly errors of the labyrinth ring waterproof cover 2 and the shaft sleeve 3 are eliminated, ensuring coaxiality. The integrated structure formed by welding firmly connects the impeller body 1, the shaft sleeve 3, and the labyrinth ring waterproof cover 2, so that the three form a unified force-bearing body when the motor is running, which greatly improves the bonding force with the motor shaft, prevents energy loss caused by relative motion, and thus improves working efficiency. The design of the contact surface 21 and the continuous circumferential welding provides precise positioning for welding to ensure welding quality, and forms a continuous seal. Combined with the labyrinth structure of the annular sealing part 22, it effectively blocks external moisture and impurities, protects the internal components of the motor, and can be press-fitted in one go during motor assembly, simplifying the assembly process, enhancing the bonding force between the impeller body 1, the labyrinth ring waterproof cover 2 and the shaft, making the motor run more firmly, and thus improving the motor's working efficiency and operational stability.

[0030] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A motor impeller structure, characterized in that: The impeller body includes a moving impeller body (1) and a mounting hole (11) opened along the axial direction of the moving impeller body (1). A plurality of moving blades (12) are arranged around one side of the moving impeller body (1). A labyrinth ring waterproof cover (2) is provided on the side of the moving impeller body (1) away from the moving blades (12). A bushing (3) corresponding to the mounting hole (11) is provided along the axial direction of the labyrinth ring waterproof cover (2). The labyrinth ring waterproof cover (2) and the bushing (3) are integrally formed and fixedly connected to the moving impeller body (1) by welding, so that the moving impeller body (1), the bushing (3) and the labyrinth ring waterproof cover (2) constitute an integrated structure.

2. The motor impeller structure according to claim 1, characterized in that: The labyrinth ring waterproof cover (2) is provided with an abutting surface (21) on one side of the bushing (3) that abuts against the side wall of the impeller body (1).

3. The motor impeller structure according to claim 2, characterized in that: The labyrinth ring waterproof cover (2) and the impeller body (1) are welded together at the edge of the contact surface (21) and continuously welded in the circumferential direction to form a closed welded connection.

4. The motor impeller structure according to claim 3, characterized in that: The bushing (3) has a fixing hole (31) along its axial direction for connecting with the drive shaft of the motor.

5. The motor impeller structure according to claim 4, characterized in that: The labyrinth ring waterproof cover (2) has an annular sealing part (22) on the side away from the moving impeller body (1), and the annular sealing part (22) is distributed at intervals along the radial direction of the labyrinth ring waterproof cover (2).

6. The motor impeller structure according to claim 5, characterized in that: The moving blades (12) are bent along the radial direction of the moving impeller body (1), and an airflow channel (13) is formed between adjacent moving blades (12) that communicates with the center of the moving impeller body (1).

7. The motor impeller structure according to claim 6, characterized in that: The end of the bushing (3) that passes through the mounting hole (11) is provided with a guide slope (32).

8. The motor impeller structure according to claim 7, characterized in that: The bushing (3) is chamfered at both ends of the hole wall of the fixing hole (31).

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