Low-noise motor rotor assembly

Abstract

The utility model relates to the technical field of rotor assemblies, and discloses a low-noise motor rotor assembly, which comprises a hollow supporting tube, a hollow cover tube is fixedly sleeved on the inner circular wall surface of the hollow supporting tube, and a motor shell is arranged on the inner circular wall surface of the hollow supporting tube. The effect of insulating noise generated inside and outside the motor shell can be achieved through mutual cooperative use of the arranged hollow supporting pipe, the fixed ring plate, the motor shell, the fan blades and the fixed holes, vacuum sound insulation is conducted on the outer circle wall face of the motor and the fan end through the arranged hollow supporting pipe and the arranged hollow cover pipe, noise transmission is lack of media, and the noise transmission efficiency is improved. The noise reduction assembly is arranged at one end of the motor shell, the transmitted noise is greatly weakened, the other end of the motor shell is subjected to sound insulation through the fixing cover, the noise is further restrained, meanwhile, the noise reduction assembly can guarantee the heat dissipation effect of heat dissipation airflow on the motor shell while reducing noise, poor heat dissipation caused by the fact that the heat dissipation airflow is blocked is avoided, heat dissipation and sound insulation are effectively balanced, and practicability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor rotor components, in particular to a low-noise motor rotor component. Background Art

[0002] A motor is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. The noise generated when the motor is working mainly comes from three parts: the mechanical noise of the motor itself (end cover, bearings, etc.); electromagnetic noise (generated by the motor windings, the noise level is related to the manufacturing process accuracy, and the larger the number of motor poles, the greater the noise); and air noise generated by the rotation of the fan blades at the end of the motor. At present, a protective cover is usually set at the end of the motor to reduce the air noise generated by the rotation of the fan blades to a certain extent, while preventing the fan blades from being damaged by collision.

[0003] An existing low-noise motor (Announcement No.: CN218587012U) has at least the following disadvantages:

[0004] In the above patent, the air noise generated by the cooling fan when it is working is weakened by providing a non-metallic lining, annular sponge pad and metal protective cover. However, the noise generated by the cooling fan will still be transmitted through the medium of the motor body, making the noise reduction effect relatively limited. At the same time, the metal protective cover will block the heat dissipation airflow, resulting in poor heat dissipation effect on the motor casing. Therefore, a low-noise motor rotor assembly is urgently needed to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a low-noise motor rotor assembly.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A low-noise motor rotor assembly comprises a hollow support tube, the inner circular wall surface of the hollow support tube is fixedly sleeved with a hollow cover tube, the inner circular wall surface of the hollow support tube is provided with a motor housing, and also comprises a noise reduction component for reducing wind noise and electromagnetic noise, the noise reduction component is arranged on the inner circular wall surface of the motor housing, the noise reduction component comprises: a motor rotor, the motor rotor is movably sleeved on the inner circular wall surface of the motor housing, one end of the motor housing is provided with a first circular through hole, the first circular through hole is movably sleeved with the motor rotor, the inner circular wall surface of the motor housing is fixedly sleeved with a fixing ring plate, the fixing ring plate is movably sleeved with the motor rotor, one end of the motor rotor is fixedly mounted with a fan blade, the outer circular wall surface of the hollow cover tube is provided with a fixing hole, the inner circular wall surface of the fixing hole is fixedly sleeved with a fixing tube, the inner circular wall surface of the fixing tube is fixedly sleeved with a first one-way valve, the hollow cover tube The top surface of the first fixing plate is provided with a plurality of air inlet holes, and the top surface of the first fixing plate is fixedly installed with a plurality of special-shaped plates. The outer circular wall of the hollow support tube is fixedly installed with a fixing cover, and a spacer ring is fixedly installed on an inner side of the fixing cover, and the outer circular wall of the spacer ring is provided with a rectangular through-hole, and the outer circular wall of the spacer ring is fixedly installed with an arc plate, and the arc plate is fixedly installed with the inner circular wall surface of the fixing cover. The outer circular wall surface of the fixing cover is provided with an air outlet hole, and the outer circular wall surface of the fixing cover is fixedly installed with an exhaust pipe, the outer circular wall surface of the hollow support tube is provided with a second circular through-hole, and the inner circular wall surface of the second circular through-hole is fixedly sleeved with a connecting pipe, and the inner circular wall surface of the connecting pipe is threadedly connected to a second one-way valve, and the outer circular wall surface of the motor housing is fixedly installed with a plurality of heat dissipation plates, and the heat dissipation plate is fixedly installed with the inner circular wall surface of the hollow support tube.

[0008] As a further solution of the present invention, a sound insulation board is fixedly mounted on one end of the fixed cover, and the sound insulation board is movably connected to the motor rotor.

[0009] As a further solution of the present invention, a filter frame is fixedly sleeved on the inner circular wall of the hollow cover tube.

[0010] As a further solution of the present invention, a support base is fixedly installed on the outer circular wall surface of the hollow support tube, and the support base is fixedly installed with the hollow cover tube.

[0011] As a further solution of the present invention, a junction box is fixedly installed on the outer circular wall of the hollow support tube.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] By coordinating the use of the hollow support tube, fixed ring plate, motor housing, hollow cover tube, motor rotor, fan blades and fixing holes, the effect of sound insulation of noise generated inside and outside the motor housing can be achieved. The hollow support tube and hollow cover tube are used to perform vacuum sound insulation on the outer wall surface of the motor and the fan end, so that the noise propagation lacks a medium, which greatly weakens the transmitted noise, and the other end of the motor housing is soundproofed by the fixed cover to further suppress the noise. At the same time, the noise reduction component can ensure the heat dissipation effect of the heat dissipation airflow on the motor housing while reducing noise, and avoid the heat dissipation airflow being blocked and causing poor heat dissipation, effectively balancing heat dissipation and sound insulation, which is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a low-noise motor rotor assembly proposed by the utility model;

[0015] Figure 2 This is a schematic diagram of the hollow support tube structure of a low-noise motor rotor assembly proposed by the utility model;

[0016] Figure 3 This is a schematic diagram of the hollow cover tube structure of a low-noise motor rotor assembly proposed by the utility model;

[0017] Figure 4 This is a schematic diagram of the spacer ring structure of a low-noise motor rotor assembly proposed by the utility model;

[0018] Figure 5 This is a schematic diagram of the special-shaped plate structure of a low-noise motor rotor assembly proposed by the utility model;

[0019] Figure 6 This is a structural schematic diagram of the first fixing plate of a low-noise motor rotor assembly proposed by the present invention.

[0020] In the figure: 1. Hollow support tube; 2. Fixed ring plate; 3. Motor housing; 4. Hollow cover tube; 5. Motor rotor; 6. Fan blades; 7. Fixing hole; 8. Fixing tube; 9. First one-way valve; 10. First fixing plate; 11. Air inlet; 12. Special-shaped plate; 13. Fixed cover; 14. Spacer ring; 15. Arc plate; 16. Air outlet; 17. Exhaust pipe; 18. Connecting pipe; 19. Second one-way valve; 20. Heat sink; 21. Sound insulation board; 22. Filter frame; 23. Support base; 24. Junction box. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0024] Reference Figures 1-6, a low-noise motor rotor assembly comprises a hollow support tube 1, the inner circular wall surface of the hollow support tube 1 is fixedly sleeved with a hollow cover tube 4, the inner circular wall surface of the hollow support tube 1 is provided with a motor housing 3, and also comprises a noise reduction component for reducing wind noise and electromagnetic noise, and the noise reduction component is arranged on the inner circular wall surface of the motor housing 3, and the noise reduction component comprises: a motor rotor 5, the motor rotor 5 is movably sleeved on the inner circular wall surface of the motor housing 3, one end of the motor housing 3 is provided with a first circular through hole, the first circular through hole is movably sleeved with the motor rotor 5, the inner circular wall surface of the motor housing 3 is fixedly sleeved with a fixing ring plate 2, the fixing ring plate 2 is movably sleeved with the motor rotor 5, and one end of the motor rotor 5 is fixedly installed with a fan blade 6, a fixing hole 7 is provided on the outer circular wall surface of the hollow cover tube 4, the inner circular wall surface of the fixing hole 7 is fixedly sleeved with a fixing tube 8, the inner circular wall surface of the fixing tube 8 is fixedly sleeved with a first one-way valve 9, and the inner circular wall surface of the hollow cover tube 4 is fixedly sleeved with two second A fixed plate 10, a plurality of air inlet holes 11 are provided on the top surface of the first fixed plate 10, a plurality of special-shaped plates 12 are fixedly installed on the top surface of the first fixed plate 10, a fixed cover 13 is fixedly sleeved on the outer circular wall of the hollow support tube 1, a spacer ring 14 is fixedly installed on one side of the inner side of the fixed cover 13, a rectangular through-hole is provided on the outer circular wall of the spacer ring 14, an arc-shaped plate 15 is fixedly installed on the outer circular wall of the spacer ring 14, the arc-shaped plate 15 is fixedly installed on the inner circular wall of the fixed cover 13, an air outlet hole 16 is provided on the outer circular wall of the fixed cover 13, an exhaust pipe 17 is fixedly installed on the outer circular wall of the fixed cover 13, a second circular through-hole is provided on the outer circular wall of the hollow support tube 1, a connecting pipe 18 is fixedly sleeved on the inner circular wall of the second circular through-hole, a second one-way valve 19 is threadedly connected to the inner circular wall of the connecting pipe 18, a plurality of heat sinks 20 are fixedly installed on the outer circular wall of the motor housing 3, and the heat sink 20 is fixedly installed on the inner circular wall of the hollow support tube 1.

[0025] In this embodiment, a sound insulation board 21 is fixedly installed at one end of the fixed cover 13, and the sound insulation board 21 is movably connected to the motor rotor 5. A filter frame 22 is fixedly connected to the inner circular wall of the hollow cover tube 4, and a support base 23 is fixedly installed on the outer circular wall of the hollow support tube 1. The support base 23 is fixedly installed with the hollow cover tube 4, and a junction box 24 is fixedly installed on the outer circular wall of the hollow support tube 1.

[0026] From the above description, it can be seen that the above-mentioned embodiment of the present invention achieves the following technical effects: through the motor casing 3, when the motor casing 3 is used, the rotation of the motor rotor 5 will drive the fan blades 6 to rotate, so that the fan blades 6 will generate wind noise, and the rotation of the motor rotor 5 will generate electromagnetic noise. Then, before use, the user connects the vacuum pump to the first one-way valve 9, starts the vacuum pump to exhaust the inside of the hollow cover tube 4 through the fixed tube 8, so that the internal air of the hollow cover tube 4 is extracted, thereby weakening the transmission of noise, and passing through the second The one-way valve 19 evacuates the interior of the hollow support tube 1, and then, through the hollow cover tube 4, the air inlet of the hollow cover tube 4 faces downward, which extends the distance that the sound propagates inside the hollow cover tube 4. The first fixing plate 10 and several special-shaped plates 12 inside the hollow cover tube 4 block the noise from rebounding back and forth, weakening the noise transmitted from the bottom of the hollow cover tube 4. Moreover, when the fan blades 6 rotate, they inhale the interior of the hollow cover tube 4, and the air enters the interior through the bottom of the hollow cover tube 4 and passes through the gaps between the several heat sinks 20, so that the heat sink 20 and the electric The motor housing 3 is cooled, and the flowing air flows out from between the several heat sinks 20, enters the space between the spacer ring 14 and the fixed cover 13, and flows downward to the left side of the curved plate 15, passes through the air outlet 16, enters the interior of the exhaust pipe 17 and is discharged. It should be noted that the other end of the motor housing 3 is soundproofed by the provided fixed cover 13, and the noise transmitted from between the several heat sinks 20 is blocked by the provided spacer ring 14, reducing the noise transmitted through the exhaust pipe 17. At the same time, one end of the fixed cover 13 is soundproofed by the provided sound insulation board 21. The sound insulation is further strengthened, thereby comprehensively achieving the effect of sound insulation of the noise inside and outside the motor housing 3. The hollow support tube 1 and the hollow cover tube 4 are provided to perform vacuum sound insulation on the outer wall surface of the motor and the fan end, so that the noise propagation lacks a medium, which greatly weakens the transmitted noise, and the other end of the motor housing 3 is soundproofed by the fixed cover 13 to further suppress the noise. At the same time, the noise reduction component can ensure the heat dissipation effect of the heat dissipation airflow on the motor housing 3 while reducing noise, and avoid the heat dissipation airflow being blocked and causing poor heat dissipation, effectively balancing heat dissipation and sound insulation, which is more practical.

[0027] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements shall fall within the scope of the present invention as claimed.

Claims

1. A low-noise motor rotor assembly, comprising a hollow support tube (1), a hollow cover tube (4) fixedly sleeved on the inner circumferential wall of the hollow support tube (1), and a motor housing (3) provided on the inner circumferential wall of the hollow support tube (1), characterized in that: The motor housing (3) further comprises a noise reduction component for reducing wind noise and electromagnetic noise, wherein the noise reduction component is arranged on the inner circular wall surface of the motor housing (3), and the noise reduction component comprises a motor rotor (5), wherein the motor rotor (5) is movably sleeved on the inner circular wall surface of the motor housing (3), and a first circular through hole is provided at one end of the motor housing (3), wherein the first circular through hole is movably sleeved on the motor rotor (5), and a fixed ring plate (2) is fixedly sleeved on the inner circular wall surface of the motor housing (3), and the fixed ring plate (2) is sleeved on the inner circular wall surface of the motor housing (3). The motor rotor (5) is movably sleeved, and a fan blade (6) is fixedly installed at one end of the motor rotor (5). A fixing hole (7) is provided on the outer circular wall of the hollow cover tube (4), a fixing tube (8) is fixedly sleeved on the inner circular wall of the fixing hole (7), and a first one-way valve (9) is fixedly sleeved on the inner circular wall of the fixing tube (8). Two first fixing plates (10) are fixedly sleeved on the inner circular wall of the hollow cover tube (4), and a plurality of air inlet holes (11) are provided on the top surface of the first fixing plate (10). A plurality of special-shaped plates (12) are fixedly mounted on the top surface of a fixed plate (10); a fixed cover (13) is fixedly sleeved on the outer circular wall surface of the hollow support tube (1); a spacer ring (14) is fixedly mounted on one side of the inner portion of the fixed cover (13); a rectangular through hole is provided on the outer circular wall surface of the spacer ring (14); an arc-shaped plate (15) is fixedly mounted on the outer circular wall surface of the spacer ring (14); the arc-shaped plate (15) is fixedly mounted on the inner circular wall surface of the fixed cover (13); and the outer circular wall surface of the fixed cover (13) is provided with a rectangular through hole. An air outlet (16) is provided, an exhaust pipe (17) is fixedly mounted on the outer circular wall of the fixed cover (13), a second circular through hole is opened on the outer circular wall of the hollow support tube (1), a connecting pipe (18) is fixedly sleeved on the inner circular wall of the second circular through hole, a second one-way valve (19) is threadedly connected to the inner circular wall of the connecting pipe (18), and a plurality of heat dissipation plates (20) are fixedly mounted on the outer circular wall of the motor housing (3), and the heat dissipation plates (20) are fixedly mounted on the inner circular wall of the hollow support tube (1).

2. A low-noise motor rotor assembly according to claim 1, characterized in that: A sound insulation board (21) is fixedly mounted on one end of the fixed cover (13), and the sound insulation board (21) is movably sleeved with the motor rotor (5).

3. The low-noise motor rotor assembly according to claim 1, characterized in that: The inner circular wall surface of the hollow cover tube (4) is fixedly sleeved with a filter screen frame (22).

4. The low-noise motor rotor assembly according to claim 1, characterized in that: A support base (23) is fixedly mounted on the outer circular wall surface of the hollow support tube (1), and the support base (23) is fixedly mounted on the hollow cover tube (4).

5. The low-noise motor rotor assembly according to claim 1, characterized in that: A junction box (24) is fixedly mounted on the outer circular wall surface of the hollow support tube (1).

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