Low-noise motor

Abstract

The utility model relates to the technical field of motors, in particular to a low-noise motor, which adopts the technical scheme that the low-noise motor comprises a motor main body, a fan cover body is arranged at the rear end of the motor main body, and a fan body is mounted at the rear end of the motor main body on the inner side of the fan cover body in a transmission manner; the fan body comprises a connecting shaft, blade bodies are fixedly installed on the outer side of the connecting shaft in an annular array mode, and turbulent flow holes are formed in the front edges of the blade bodies. The low-noise motor has the advantages of reducing noise and improving heat dissipation performance, and solves the problem of poor heat dissipation of the existing low-noise motor.

Description

Technical Field

[0001] This utility model relates to the field of electric motor technology, specifically a low-noise motor. Background Technology

[0002] As a typical electromechanical energy conversion device, the core structure of an electric motor consists of a stator assembly, a rotor assembly, axial end covers, and an outer casing.

[0003] Extensive searches revealed CN216530903U, which discloses a low-noise motor, including a housing, a base, and a sealing sleeve. The housing is hollow inside, with a shaft through hole on one side and an opening on the opposite side. The diameter of the opening is larger than the diameter of the shaft through hole. The housing includes an end and a side arm, which are designed as a single unit. The outer surfaces of the end and side arm are smooth. A first bearing mounting groove is designed on one side of the shaft through hole. The base has an overall shape corresponding to the housing. The base is hollow inside, with an opening facing the housing and a closed opposite side. The base has a second bearing mounting groove inside.

[0004] While the aforementioned device achieves noise suppression through integral casing casting and surface finishing, it suffers from degraded heat dissipation performance. This is due to the obstruction of axial heat dissipation channels caused by the fully enclosed casing design, leading to heat accumulation. To address the contradiction between existing noise reduction solutions and heat dissipation requirements, a low-noise motor is proposed to solve this problem. Utility Model Content

[0005] The purpose of this invention is to provide a low-noise motor that has the advantages of reducing noise and improving heat dissipation performance, thus solving the problem of poor heat dissipation in existing low-noise motors.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a low-noise motor, comprising a motor body, a fan body being provided at the rear end of the motor body, and a fan body being drivenly mounted at the rear end of the motor body inside the fan body; the fan body includes a connecting shaft, and blade bodies are fixedly mounted in a ring array on the outer side of the connecting shaft, and a turbulence hole is provided at the leading edge of the blade body.

[0007] Preferably, the end of the connecting shaft away from the shroud body is provided with a mounting groove, the cross-section of the mounting groove is designed with a hexagonal structure, and a screw hole is provided on one side of the connecting shaft.

[0008] In the design, the mounting groove with a hexagonal cross-section is opened at the end of the connecting shaft away from the fan body, which realizes a reliable connection and accurate circumferential positioning between the fan body and the rear drive shaft of the motor body, avoids relative rotation during transmission, and ensures the stability of power transmission.

[0009] Preferably, the screw hole is connected to the mounting groove, and a countersunk screw is installed in the internal thread of the screw hole. The countersunk screw is used to position the drive shaft that passes through the rear end of the motor body.

[0010] In the design, the screw hole connected to the mounting slot and the countersunk screw installed in the screw hole effectively position the drive shaft passing through the rear end of the motor body, preventing the drive shaft from moving axially and ensuring the stable operation of the fan body.

[0011] Preferably, the motor body has mounting bases fixedly installed in a circular array at both ends of the outer wall, and the outer wall of the motor body is provided with heat dissipation fins.

[0012] In the design, the mounting bases are fixedly installed in a ring array at both ends of the outer wall of the motor body, which realizes the convenience and stability of connecting the motor body with the front and rear covers;

[0013] The heat dissipation fins installed on the outer wall of the motor body effectively increase the heat dissipation area of ​​the motor and improve the heat dissipation performance of the motor.

[0014] Preferably, the mounting brackets at both ends of the motor body are fixedly connected by connecting screws;

[0015] The motor body has a front cover and a rear cover at the front and rear ends, respectively, and the mounting brackets at the front and rear ends of the motor body are fixedly installed on the front cover and the rear cover, respectively.

[0016] In the design, the mounting brackets at both ends of the motor body are fixedly connected by connecting screws, which realizes the overall structural integrity of the motor body;

[0017] The motor body is equipped with a front cover and a rear cover at the front and rear ends, respectively, and the mounting brackets at the front and rear ends are fixedly installed on the front cover and the rear cover, respectively, which effectively protects the internal components of the motor and also contributes to the integrity and stability of the overall structure.

[0018] Preferably, the rear end of the shroud body has an air inlet, and the outer edge of the front end of the shroud body extends and covers one-third of the length of the heat dissipation fins.

[0019] In the design, the air intake hole at the rear of the fan body allows for the smooth entry of external air, providing sufficient airflow for motor heat dissipation;

[0020] The outer edge of the front end of the fan cover extends and covers one-third of the length of the heat dissipation fins, effectively guiding the airflow so that the airflow can better act on the heat dissipation fins and improve heat dissipation efficiency.

[0021] Preferably, the number of blade bodies is ten, and all ten blade bodies are tilted at a 15-degree angle in the vertical direction.

[0022] The design incorporates ten blades, each tilted at a 15-degree angle in the vertical direction. This design ensures that the fan body generates appropriate airflow and direction when rotating, guaranteeing sufficient airflow for motor cooling while also reducing noise generated by the airflow to some extent.

[0023] Preferably, the turbulence holes include large elliptical holes and small elliptical holes distributed around the large elliptical holes.

[0024] In the design, the turbulence holes include large elliptical holes and small elliptical holes distributed around the large elliptical holes, which effectively turbulent the airflow at the leading edge of the blade body, disrupt the continuity of the airflow, reduce the noise generated by the airflow, and at the same time improve the flow characteristics of the airflow to a certain extent and improve the working efficiency of the fan.

[0025] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0026] This invention achieves the effect of providing power for motor cooling by setting a fan cover body at the rear end of the motor body and drivingly installing a fan body at the rear end of the motor body inside the fan cover body.

[0027] The fan body's connecting shaft has blades fixedly mounted in a circular array on its outer side, and the leading edge of the blades has turbulence holes, which effectively reduces noise generated during fan rotation. When the fan rotates, the airflow is disturbed by the turbulence holes, reducing airflow vortices and turbulence, thereby lowering noise. Simultaneously, the airflow driven by the fan rotation can dissipate heat from the motor body, improving heat dissipation performance and solving the problem of poor heat dissipation in existing low-noise motors. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0029] Figure 2 This is a schematic diagram of the connection structure of the wind shield body of this utility model;

[0030] Figure 3 This is a schematic diagram of the connection structure between the motor body and the fan body of this utility model;

[0031] Figure 4 This is a bottom view of the fan body structure of this utility model.

[0032] In the diagram: 1. Motor body; 11. Mounting base; 12. Heat dissipation fins; 13. Connecting screw; 2. Fan cover body; 3. Fan body; 31. Connecting shaft; 311. Mounting slot; 312. Countersunk screw; 32. Blade body; 321. Blowout hole. Detailed Implementation

[0033] 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.

[0034] Example 1

[0035] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, one embodiment of the present invention is a low-noise motor, including a motor body 1, a fan shroud body 2 at the rear end of the motor body 1, and a fan body 3 drivenly mounted at the rear end of the motor body 1 inside the fan shroud body 2.

[0036] The fan body 3 includes a connecting shaft 31, and blade bodies 32 are fixedly mounted in a ring array on the outer side of the connecting shaft 31. The leading edge of the blade body 32 is provided with a turbulence hole 321.

[0037] Specifically, by setting a fan cover body 2 at the rear end of the motor body 1, and drivingly installing a fan body 3 at the rear end of the motor body 1 inside the fan cover body 2, the effect of providing power for motor heat dissipation is achieved.

[0038] The blade bodies 32 are fixedly mounted in a ring array on the outer side of the connecting shaft 31 of the fan body 3, and the leading edge of the blade bodies 32 is provided with a turbulence hole 321, which achieves the effect of reducing the noise generated when the fan rotates. When the fan rotates, the airflow is disturbed by the turbulence hole 321, reducing airflow vortices and turbulence, thereby reducing noise. At the same time, the airflow driven by the fan rotation can dissipate heat from the motor body 1, improving heat dissipation performance and solving the problem of poor heat dissipation in existing low-noise motors.

[0039] Example 2

[0040] To achieve stable connection and axial positioning of the drive shaft, such as Figure 3 and Figure 4 As shown, in this embodiment, the end of the connecting shaft 31 away from the wind cover body 2 is provided with a mounting groove 311. The mounting groove 311 has a hexagonal cross-section and a screw hole is provided on one side of the connecting shaft 31.

[0041] Specifically, the mounting groove 311 with a hexagonal cross-section is opened at the end of the connecting shaft 31 away from the fan body 2, which realizes the reliable connection and accurate circumferential positioning of the fan body 3 and the rear transmission shaft of the motor body 1, avoids relative rotation during transmission, and ensures the stability of power transmission.

[0042] Furthermore, the screw hole is connected to the mounting groove 311, and a countersunk screw 312 is installed in the internal thread of the screw hole. The countersunk screw 312 is used to position the drive shaft that passes through the rear end of the motor body 1.

[0043] Specifically, the screw hole connected to the mounting slot 311 and the countersunk screw 312 installed in the screw hole effectively position the drive shaft passing through the rear end of the motor body 1, preventing the drive shaft from moving axially and ensuring the stable operation of the fan body 3.

[0044] Furthermore, mounting bases 11 are fixedly installed in a ring array at the front and rear ends of the outer wall of the motor body 1, and heat dissipation fins 12 are provided on the outer wall of the motor body 1.

[0045] Specifically, the mounting bases 11 are fixedly installed in a ring array at the front and rear ends of the outer wall of the motor body 1, which realizes the convenience and stability of connecting the motor body with the front and rear covers;

[0046] The heat dissipation fins 12 provided on the outer wall of the motor body 1 effectively increase the heat dissipation area of ​​the motor and improve the heat dissipation performance of the motor.

[0047] Furthermore, the mounting seats 11 at both ends of the motor body 1 are fixedly connected by connecting screws 13;

[0048] The motor body 1 has a front cover and a rear cover at its front and rear ends, respectively, and the mounting bases 11 at the front and rear ends of the motor body 1 are fixedly installed on the front cover and the rear cover, respectively.

[0049] Specifically, the mounting seats 11 at both ends of the motor body 1 are fixedly connected by connecting screws 13, which realizes the overall structural integrity of the motor body;

[0050] The motor body 1 has a front cover and a rear cover at its front and rear ends, respectively, and the mounting bases 11 at the front and rear ends are fixedly installed on the front cover and the rear cover, respectively, which effectively protects the internal components of the motor and also contributes to the integrity and stability of the overall structure.

[0051] Example 3

[0052] To achieve synergistic effects of airflow optimization and noise reduction / heat dissipation, such as Figure 2 and Figure 4 As shown, in this embodiment, an air inlet is provided at the rear end of the shroud body 2, and the outer edge of the front end of the shroud body 2 extends and covers one-third of the length of the heat dissipation fins 12.

[0053] Specifically, the air intake hole at the rear end of the fan body 2 allows for the smooth entry of external air, providing sufficient airflow for motor heat dissipation;

[0054] The outer edge of the front end of the fan cover 2 extends and covers one-third of the length of the heat dissipation fins 12, which effectively guides the airflow, allowing the airflow to act better on the heat dissipation fins and improve heat dissipation efficiency.

[0055] Furthermore, there are ten blade bodies 32, and all ten blade bodies 32 are tilted at a 15-degree angle in the vertical direction.

[0056] Specifically, the ten blade bodies 32, all tilted at a 15-degree angle in the vertical direction, enable the generation of appropriate airflow and direction when the fan body 3 rotates. This ensures sufficient airflow for motor cooling while reducing noise generated by the airflow to a certain extent.

[0057] Furthermore, the turbulence hole 321 includes a large elliptical hole and small elliptical holes distributed around the large elliptical hole.

[0058] Specifically, the turbulence hole 321 includes a large elliptical hole and small elliptical holes distributed around the large elliptical hole, which effectively turbulent the airflow at the leading edge of the blade body 32, disrupts the continuity of the airflow, reduces the noise generated by the airflow, and can also improve the flow characteristics of the airflow to a certain extent and improve the working efficiency of the fan.

[0059] In use, the connecting screw 13 is inserted through the mounting base 11 of the annular array on the outer wall of the motor body 1 and locked to achieve a fixed connection between the motor body 1 and the front and rear covers.

[0060] Insert the drive shaft into the hexagonal mounting slot 311 of the connecting shaft 31, and screw the countersunk screw 312 into the screw hole and tighten it against the drive shaft to complete the axial positioning of the fan body 3 and the motor body 1.

[0061] After the power is turned on, the motor body 1 drives the transmission shaft to rotate the fan body 3, and the blade body 32 generates directional airflow at a vertical tilt angle of 15°.

[0062] Airflow is drawn in through the air inlet at the rear end of the shroud body 2. When it passes through the turbulence hole 321 at the leading edge of the blade body 32, the large elliptical hole and the small elliptical hole work together to disperse the boundary layer vortex of the airflow and reduce high-frequency noise.

[0063] The airflow generated by the fan body 3 is guided by the extension of the outer edge of the front end of the fan body 2, and covers the front third area of ​​the heat dissipation fins 12 on the outer wall of the motor body 1, forming a local high-speed scouring.

[0064] The inclined blade body 32 pushes the airflow to flow spirally along the surface of the heat dissipation fins 12, thereby improving the heat exchange efficiency through a three-dimensional heat dissipation path.

[0065] The turbulence hole 321 suppresses vortex shedding noise by disrupting the continuous airflow separation at the leading edge of the blade; at the same time, the tilted blade reduces the periodic impact of airflow on the inner wall of the shroud body 2, thereby reducing broadband noise.

[0066] 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 low-noise motor, comprising a motor body (1), wherein a fan shroud body (2) is provided at the rear end of the motor body (1), and a fan body (3) is drivenly mounted at the rear end of the motor body (1) inside the fan shroud body (2), characterized in that: The fan body (3) includes a connecting shaft (31), and blade bodies (32) are fixedly installed in a ring array on the outside of the connecting shaft (31). The leading edge of the blade body (32) is provided with a turbulence hole (321).

2. The low-noise motor according to claim 1, characterized in that, The connecting shaft (31) has an installation groove (311) at one end away from the shroud body (2). The installation groove (311) has a hexagonal cross-section and a screw hole on one side of the connecting shaft (31).

3. A low noise motor according to claim 2, wherein The screw hole is connected to the mounting groove (311), and a countersunk screw (312) is installed in the screw hole. The countersunk screw (312) is used to position the drive shaft that passes through the rear end of the motor body (1).

4. A low noise motor according to claim 1, wherein The motor body (1) has mounting bases (11) fixedly installed in a ring array at both ends of the outer wall. The outer wall of the motor body (1) is provided with heat dissipation fins (12).

5. A low noise motor according to claim 4, wherein The mounting seats (11) at both ends of the motor body (1) are fixedly connected by connecting screws (13); The motor body (1) has a front cover and a rear cover at the front and rear ends respectively, and the mounting bases (11) at the front and rear ends of the motor body (1) are fixedly installed on the front cover and the rear cover respectively.

6. A low noise motor according to claim 1, wherein The rear end of the shroud body (2) is provided with an air inlet, and the front end of the shroud body (2) extends and covers one-third of the length of the heat dissipation fins (12).

7. A low noise motor according to claim 1, wherein The number of blade bodies (32) is ten, and all ten blade bodies (32) are tilted at a 15-degree angle in the vertical direction.

8. A low noise motor according to claim 1, wherein The turbulence hole (321) includes a large elliptical hole and small elliptical holes distributed around the large elliptical hole.

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