Low-noise motor

Abstract

The invention relates to the field of motors, in particular to a low-noise motor which comprises a shell internally provided with a rotating core in a coaxial rotating mode, a front blocking plate and a rear cover plate are fixed to the front end and the rear end of the shell respectively, a plurality of magnets are evenly arranged on the inner wall of the shell, a U-shaped cover is fixed to the outer surface of the shell, and two long holes are formed in the position, corresponding to the shell, in the U-shaped cover. And the front blocking plate and the rear cover plate are used for blocking the front end and the rear end of the U-shaped cover. And a plurality of cooling columns are axially and uniformly fixed between the middle part in the U-shaped cover and the shell. Stirring shafts are rotationally arranged in the space, on the two sides of the multiple cooling columns, in the U-shaped cover, and multiple stirring plates are fixed to the two stirring shafts. According to the invention, aerodynamic noise can be reduced.

Description

Technical Field

[0001] The invention relates to the field of motors, in particular to a low-noise motor. Background Art

[0002] The widespread use of electric motors in household appliances, office equipment, and transportation has made noise reduction the key to improving the comfort of living and working environments. The development of low-noise motors helps meet these environmental standards and promote sustainable development. The development of low-noise motors is the product of multiple demands and technological progress. It not only meets the requirements of environmental protection and energy efficiency, but also improves the market competitiveness of products, meets the needs of specific application areas, can significantly reduce noise pollution, and provide a quieter environment.

[0003] At present, the main sources of motor noise are mechanical noise and aerodynamic noise. Mechanical noise is the noise generated by the friction of the rotating parts of the motor, and aerodynamic noise is the noise generated by the flow of air driven by the rotation of the rotating parts of the motor. However, most existing motors are unable to reduce the noise generated by air flow when reducing noise. Summary of the invention

[0004] The object of the present invention is to provide a low-noise motor capable of reducing aerodynamic noise.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] A low-noise motor comprises a shell with a rotating core coaxially rotating inside, a front blocking plate and a rear cover plate are respectively fixed to the front and rear ends of the shell, a plurality of magnets are evenly arranged on the inner wall of the shell, a U-shaped cover is fixed to the outer surface of the shell, two long holes are arranged on the shell corresponding to the inside of the U-shaped cover, and the front blocking plate and the rear cover plate also block the front and rear ends of the U-shaped cover.

[0007] A plurality of cooling columns are evenly fixed axially between the middle portion of the U-shaped cover and the outer shell.

[0008] Agitating shafts are rotated in the inner spaces of the U-shaped covers on both sides of the plurality of cooling columns, and a plurality of stirring plates are fixed on the two stirring shafts.

[0009] The rear end of the rotating core passes through the shaft head of the rear cover plate and is transmission-connected with the two stirring shafts.

[0010] A protective cover is fixed on the rear cover plate.

[0011] The rear end of the rotating core is provided with fan blades.

[0012] The rear end of the shell is provided with communicating holes at positions corresponding to the two long holes.

[0013] Two cooling liquid chambers are axially arranged in the bottom plate of the U-shaped cover away from the shell end, and the two cooling liquid chambers are connected through the inner chambers of a plurality of cooling columns.

[0014] The rear end of the U-shaped cover is provided with two connecting pipe heads, and the two connecting pipe heads are respectively communicated with the two cooling liquid chambers.

[0015] A limiting groove is axially arranged on the bottom plate of the U-shaped cover away from the shell end, a slider is axially limited and slidable in the limiting groove, a base is fixed at the lower end of the slider, and springs are arranged at the front and rear ends of the slider and the limiting groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 and Figure 2 It is a structural diagram of a low noise motor;

[0017] Figure 3 and Figure 4 It is a schematic diagram of the structure of the shell;

[0018] Figure 5 and Figure 6 It is a schematic diagram of the cross-sectional structure of the shell;

[0019] Figure 7 It is a partial structural diagram of a low-noise motor;

[0020] Figure 8 yes Figure 7 Schematic diagram of the local structure;

[0021] Fig. 9 It is a structural schematic diagram of the rotating core;

[0022] Fig.10 It is a schematic diagram of the structure of the base.

[0023] In the figure:

[0024] Shell 101; magnet 102; U-shaped cover 103; front blocking plate 104; long hole 105; cooling column 106; connecting hole 107; connecting pipe head 108; limiting groove 109; cooling liquid chamber 110;

[0025] Rear cover 201; shield 202;

[0026] Rotating core 301; fan blade 302;

[0027] Stirring shaft 401; Stirring plate 402;

[0028] Slider 501; Spring 502; Base 503. DETAILED DESCRIPTION

[0029] like Figure 1-10 As shown, the low noise motor is described in detail:

[0030] A low-noise motor comprises a shell 101 with a rotating core 301 coaxially rotating inside, a front blocking plate 104 and a rear cover plate 201 are respectively fixed to the front and rear ends of the shell 101, a plurality of magnets 102 are evenly arranged on the inner wall of the shell 101, a U-shaped cover 103 is fixed to the outer surface of the shell 101, two long holes 105 are arranged on the shell 101 corresponding to the inside of the U-shaped cover 103, and the front blocking plate 104 and the rear cover plate 201 also block the front and rear ends of the U-shaped cover 103.

[0031] The front and rear ends of the housing 101 and the U-shaped cover 103 are blocked at the same time by the front blocking plate 104 and the rear cover plate 201, wherein the rear cover plate 201 is an assembled fixed form, and the front and rear ends of the inner shaft of the rotating core 301 respectively penetrate the front blocking plate 104 and the rear cover plate 201 to form a support for the rotating core 301. Through the setting of the two long holes 105 and the coordination of the space in the U-shaped cover 103, the cavity space between the rotating core 301 and the housing 101 and the magnet 102 is enlarged. Since the faster the air flows in a small space, the greater the noise generated, When the core 301 rotates, the air flow space driven by the core 301 increases, thereby increasing the flow space, reducing the air flow speed, and thus reducing the noise generated by the air. At the same time, the air flows through one of the long holes 105 in the space inside the shell 101 to the U-shaped cover 103, and then flows back to the space inside the shell 101 through the other long hole 105, further reducing the air flow speed, thereby further reducing the noise; and, due to the sealing of the front blocking plate 104 and the rear cover plate 201, the transmission of noise generated by air flow is further hindered.

[0032] Further:

[0033] A plurality of cooling columns 106 are evenly fixed axially between the middle portion of the U-shaped cover 103 and the outer shell 101 .

[0034] By setting up multiple cooling columns 106, when the air flows to the U-shaped cover 103 through one of the long holes 105 and then flows back to the space inside the shell 101 through another long hole 105, the air will flow through the gap between two adjacent cooling columns 106, so that the air can fully contact with the multiple cooling columns 106, thereby achieving the purpose of cooling the air, thereby achieving the purpose of cooling the motor.

[0035] Further:

[0036] Stirring shafts 401 are rotated in the inner space of the U-shaped cover 103 on both sides of the plurality of cooling columns 106 , and a plurality of stirring plates 402 are fixed on the two stirring shafts 401 .

[0037] The rear end of the rotating core 301 passes through the shaft head of the rear cover plate 201 and is transmission-connected with two stirring shafts 401 .

[0038] By setting the stirring shaft 401 and the stirring plate 402, the air flow in the U-shaped cover 103 is further blocked, and the air flow rate is reduced. At the same time, the stirring shaft 401 is driven by the rotating core 301 to drive the stirring plate 402 to rotate, which can also promote the air flow, thereby destroying the original air flow form, thereby further increasing the air flow rate and achieving the purpose of further noise reduction.

[0039] Further:

[0040] By installing and fixing the protective cover 202 on the rear cover plate 201 , the transmission part of the rotating core 301 that transmits the two stirring shafts 401 can be protected.

[0041] like Figure 1-10 As shown:

[0042] By providing the fan blades 302 at the rear end of the rotating core 301, when the rotating core 301 rotates, the fan blades 302 can be driven to rotate, so that in the housing 101, the rotating fan blades 302 promote the axial flow of air, destroying the circumferential rotation flow of air formed by the rotation of the rotating core 301, further reducing the air flow and reducing noise.

[0043] Further:

[0044] The rear end of the housing 101 is provided with communicating holes 107 at positions corresponding to the two long holes 105 .

[0045] By setting the connecting hole 107, when the fan blade 302 rotates, the air in the U-shaped cover 103 can be drawn through the through hole 107 and blown toward the rotating core 301, or in the opposite direction, thereby further destroying the high-speed flow of air and reducing noise.

[0046] Further:

[0047] Two cooling liquid chambers 110 are axially arranged in the bottom plate of the U-shaped cover 103 away from the shell 101 , and the two cooling liquid chambers 110 are connected through the inner chambers of a plurality of cooling columns 106 .

[0048] The rear end of the U-shaped cover 103 is provided with two connecting pipe heads 108 , and the two connecting pipe heads 108 are respectively connected to the two cooling liquid chambers 110 .

[0049] By connecting the connecting pipe head 108 to the coolant system, the coolant can flow in the two coolant chambers 110 and the inner chambers of the plurality of cooling columns 106 , thereby ensuring the cooling effect of the plurality of cooling columns 106 on the air.

[0050] Further:

[0051] A limiting groove 109 is axially provided on the bottom plate of the U-shaped cover 103 away from the shell 101, and a slider 501 is axially limited and slidable in the limiting groove 109. A base 503 is fixed to the lower end of the slider 501, and springs 502 are provided at the front and rear ends of the slider 501 and the limiting groove 109.

[0052] The motor is installed through the base 503. After the base 503 is fixed, the slider 501 can overcome the elastic force of the spring 502 and perform axial elastic sliding of the rotating core 301 in the limiting groove 109, which improves the convenience of installation and can overcome axial vibration when the motor is in use.

Claims

1. A low noise motor, characterized in that: The invention comprises a shell (101) having a rotating core (301) coaxially rotating therein, a front blocking plate (104) and a rear cover plate (201) being fixed to the front and rear ends of the shell (101) respectively, a plurality of magnets (102) being evenly arranged on the inner wall of the shell (101), a U-shaped cover (103) being fixed to the outer surface of the shell (101), two long holes (105) being arranged on the shell (101) corresponding to the U-shaped cover (103), and the front blocking plate (104) and the rear cover plate (201) also blocking the front and rear ends of the U-shaped cover (103).

2. A low noise motor according to claim 1, characterized in that: A plurality of cooling columns (106) are evenly fixed axially between the middle portion of the U-shaped cover (103) and the outer shell (101).

3. A low noise motor according to claim 2, characterized in that: A stirring shaft (401) is rotated in the inner space of the U-shaped cover (103) on both sides of the plurality of cooling columns (106), and a plurality of stirring plates (402) are fixed on the two stirring shafts (401).

4. A low noise motor according to claim 3, characterized in that: The rear end of the rotating core (301) passes through the shaft head of the rear cover plate (201) and is transmission-connected to the two stirring shafts (401).

5. A low noise motor according to claim 4, characterized in that: A protective cover (202) is fixed on the rear cover plate (201).

6. A low noise motor according to claim 2, characterized in that: The rear end of the rotating core (301) is provided with a fan blade (302).

7. A low noise motor according to claim 6, characterized in that: The rear end of the housing (101) and the positions corresponding to the two long holes (105) are both provided with communication holes (107).

8. A low noise motor according to claim 2, characterized in that: Two cooling liquid chambers (110) are axially arranged in the bottom plate of the U-shaped cover (103) away from the outer shell (101), and the two cooling liquid chambers (110) are connected through the inner chambers of a plurality of cooling columns (106).

9. A low noise motor according to claim 8, characterized in that: The rear end of the U-shaped cover (103) is provided with two connecting pipe heads (108), and the two connecting pipe heads (108) are respectively connected to the two cooling liquid chambers (110).

10. The low noise motor according to claim 1, characterized in that: A limiting groove (109) is axially provided on the bottom plate of the U-shaped cover (103) away from the end of the housing (101), a slider (501) is axially limited and slidable in the limiting groove (109), a base (503) is fixed at the lower end of the slider (501), and springs (502) are provided at both the front and rear ends of the slider (501) and the limiting groove (109).

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