An energy-saving DC brushless motor

Abstract

This invention discloses an energy-saving brushless DC motor, relating to the field of brushless DC motor technology. It includes a front cover and a rear cover forming the brushless motor body, with a housing fixedly installed between the front and rear covers. The front cover also includes a dust-blocking mechanism internally, comprising a dust-blocking circular frame, with dust-blocking baffles slidably arranged at equal angles inside the frame. The rear cover has a heat dissipation mechanism at its rear end, with a heat dissipation circulation pipe installed through the front end of a circulating water tank at equal angles. This energy-saving brushless DC motor, through the operation of the motor body, opens the dust-blocking filter, causing the rotating dust baffles to repel dust and clean it. Simultaneously, the heat dissipation mechanism uses negative pressure to extract heat from the corresponding drainage channels and heat dissipation circulation pipes, aiding in cooling and reducing the energy consumption of the brushless motor body while improving operating efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of direct-current brushless motors, in particular to an energy-saving direct-current brushless motor. BACKGROUND

[0002] A direct-current brushless motor is composed of a stator, a rotor and an electronic controller, and belongs to a mechatronic product. The electronic controller drives the stator winding to generate a rotating magnetic field, which attracts the permanent magnet rotor to rotate. The direct-current brushless motor does not rely on physical contact of the brush and the commutator, eliminates the problems of sparks, wear and noise caused by mechanical friction, and improves the reliability and service life. Due to its high operating efficiency, it is widely used in household appliances, industrial equipment and electronic consumer goods.

[0003] The utility model with the publication number CN220291817U discloses an efficient direct-current brushless generator. Positioning rings are arranged on both sides of the shell, and fans are installed inside the positioning rings. The air flow rate inside the shell can be effectively increased under the driving action of the fans on both sides, so that the heat of the motor body can be quickly removed, achieving the purpose of efficiently cooling the motor body.

[0004] The utility model with the publication number CN220273462U discloses an overall structure of a direct-current brushless motor. The heat generated by the rotor and the stator magnet can be absorbed by the heat sink. The heat sink and the heat dissipation fins conduct heat. The heat dissipation fins are located outside the shell at the end away from the heat sink, so that the heat dissipation fins can diffuse the heat absorbed by the heat sink. The fan blades are driven to rotate, and the rotating fan blades can drive the airflow to flow, thereby removing the heat inside the shell through the flowing airflow.

[0005] However, the above-mentioned direct-current brushless motor still has the following problems in use: although the energy consumption of the brushless motor is reduced by adding a cooling mechanism, the added cooling mechanism cannot form an integral structure with the brushless motor and is set outside the brushless motor, which affects the heat dissipation. At the same time, the brushless motor shell is usually in a large window structure to achieve heat dissipation. Such a shell is easy to cause dust to be attracted and accumulated, thereby reducing the working efficiency of the brushless motor and increasing the operating energy consumption.

[0006] Therefore, we propose an energy-saving direct-current brushless motor to solve the above-mentioned problems. SUMMARY

[0007] The purpose of the present application is to provide an energy-saving DC brushless motor, in order to solve the problem that the existing energy consumption of the brushless motor is reduced by adding a cooling mechanism, but such an added cooling mechanism cannot form an integral structure with the brushless motor, and is set outside the brushless motor, which affects heat dissipation. At the same time, the brushless motor shell is usually in a large window structure to achieve heat dissipation, which easily causes dust to be attracted and accumulated, thereby reducing the working efficiency of the brushless motor and increasing the operating energy consumption.

[0008] In order to achieve the above purpose, the present application provides the following technical scheme: an energy-saving DC brushless motor, comprising a front end cover and a rear end cover which constitute a brushless motor body, and a body shell fixedly installed between the front end cover and the rear end cover.

[0009] It is characterized in that it further comprises:

[0010] The inside of the front end cover is provided with a dust prevention mechanism, and the dust prevention mechanism comprises a dust prevention circular frame, and a dust prevention partition plate is slidably arranged at equal angles in the inside of the dust prevention circular frame;

[0011] The rear end of the rear end cover is provided with a heat dissipation mechanism, and the heat dissipation mechanism comprises a circulating water tank, and a heat dissipation circulating pipe is installed at equal angles through the front end of the circulating water tank;

[0012] The dust prevention mechanism comprises a dust prevention filter plate, which is slidably arranged at equal angles in the inside of the front end cover in an elastic connection mode, and the dust prevention filter plate and the dust prevention partition plate correspond to each other, and the inner ends of the front faces of the dust prevention partition plates are provided with magnetic block assemblies on both sides;

[0013] The rotating dust prevention partition plate realizes staggered circulating magnetic repulsion effect on the dust prevention filter plate through the magnetic block assemblies, and the dust prevention filter plate which slides elastically cleans the dust adhered to the front face to prevent blockage and affect heat dissipation.

[0014] Preferably, the dust prevention mechanism comprises a guide sliding rod, which is fixedly installed at equal angles in the inside of the dust prevention circular frame, and the guide sliding rods arranged at equal angles slide through the inside center position of the dust prevention partition plate, and the dust prevention partition plate slides outward through the centrifugal effect of rotation, and then slides through the magnetic block assemblies on the front face of the dust prevention partition plate to repel the dust prevention filter plate.

[0015] Preferably, the center positions of the front end cover and the rear end cover are rotatably provided with a driving shaft through a bearing, the rear end of the driving shaft extends into the inside of the heat dissipation mechanism, the outer wall of the driving shaft in the inside of the body shell is fixedly provided with a rotor core, the outer wall of the rotor core is provided with a rotor winding at equal angles, and the inner wall of the body shell is fixedly provided with a stator body at equal angles.

[0016] Preferably, the dust blocking mechanism comprises a positioning gear ring fixedly installed inside the front end cover body, an internal equiangular meshing reduction gear is arranged on the positioning gear ring, an internal meshing transmission gear is arranged on the reduction gear, and the transmission gear is fixedly installed on the outer wall of the driving shaft.

[0017] Preferably, the dust blocking mechanism comprises a transmission bracket, the transmission bracket is rotationally arranged at the front end of the positioning gear ring, the transmission bracket and the reduction gear are connected through a bearing, the transmission bracket is fixedly connected with the inner end of the dust blocking circular frame, and the transmission bracket drives the dust blocking circular frame and the dust blocking partition plate to rotate.

[0018] Preferably, the dust blocking mechanism comprises a damping pad strip, the damping pad strip is equiangularly fixedly arranged on the inner side of the dust blocking circular frame, and the damping pad strip corresponds to the dust blocking partition plate one by one, and the damping pad strip is used to support and pad after the dust blocking partition plate slides away in a centrifugal manner.

[0019] Preferably, the heat dissipation mechanism comprises a circulating water tank, the front end of the circulating water tank is fixedly sleeved on the outside of the rear end cover body, a guide fan is fixedly installed on the outer wall of the driving shaft in the circulating water tank, and the guide fan guides and discharges the heat in the brushless motor body from front to back in a negative pressure mode.

[0020] Preferably, the heat dissipation mechanism comprises a heat dissipation circulating pipe, the front end of the heat dissipation circulating pipe extends to the outside of the machine body shell, the heat dissipation circulating pipe realizes heat exchange and heat dissipation through the circulating water tank connected in a penetrating mode, and the circulating water tank pumps refrigerant liquid to the inside of the heat dissipation circulating pipe to realize circulating cooling.

[0021] Preferably, the heat dissipation mechanism comprises a guide channel, the guide channel is equiangularly arranged on the inner side of the circulating water tank close to the machine body shell, the middle part of the guide channel is in communication with the cavity in which the guide fan is installed in the machine body shell, and the guide channel guides air to assist the heat dissipation of the heat dissipation circulating pipe through the guide fan.

[0022] Compared with the prior art, the energy-saving direct-current brushless motor has the advantages that: the dust blocking filter plate is opened by the operation of the brushless motor body, the rotating dust blocking partition plate drives the dust blocking filter plate to clean dust through repulsion, the heat dissipation mechanism extracts heat from the corresponding guide channel and the heat dissipation circulating pipe through negative pressure to assist cooling and heat dissipation, the energy consumption of the brushless motor body is reduced, and the operation efficiency is improved.

[0023] 1. The drive shaft drives the transmission gear to rotate, engages the reduction gear through the positioning gear ring, and drives the transmission support to rotate at a reduced speed, so that the dustproof baffle inside the guiding slide rod of the dustproof circular frame is affected by the centrifugal force in the rotating process and slides outward to the damping pad strip at the outer end of the guiding slide rod, and then the dustproof filter plate originally shielded inside the front end cover body is opened, and the dustproof filter plate realizes air intake and heat dissipation.

[0024] 2. The dustproof filter plate filters dust for air intake, and the dustproof baffle drives the magnetic block assembly to slide outward so as to correspond to the dustproof filter plate, and the dustproof filter plate is reciprocated in the front and back sliding in the inside of the front end cover body through the intermittent repulsion of the magnetic block assembly, so as to shake off the adhered dust and prevent the dust from accumulating to block the air intake channel and affect the heat dissipation effect of the brushless motor body.

[0025] 3. The circulating water tank pumps cooling liquid to the inside of the heat dissipation circulating pipe to circulate and exchange the heat dissipated to the outside of the machine body shell, and the drive shaft in the inside of the machine body shell drives the flow guide fan to rotate, so that the flow guide fan forms negative pressure in the inside of the machine body shell, and then air is extracted from the outside through the opened drainage channel, and the outer end of the drainage channel corresponds to the heat dissipation circulating pipe, so as to assist the heat dissipation circulating pipe to disperse heat and reduce the energy consumption of the brushless motor body to improve the operation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a whole three-dimensional structure schematic diagram of the application;

[0027] Figure 2 It is a circulating water tank installation structure schematic diagram of the application;

[0028] Figure 3 It is a rotor core and stator body installation structure schematic diagram of the application;

[0029] Figure 4 It is a heat dissipation circulating pipe three-dimensional structure schematic diagram of the application;

[0030] Figure 5 It is a Figure 4 enlarged structure schematic diagram of A in the application;

[0031] Figure 6 It is a dustproof baffle sliding structure schematic diagram of the application;

[0032] Figure 7 It is a dustproof circular frame three-dimensional structure schematic diagram of the application;

[0033] Figure 8 It is a Figure 7 enlarged structure schematic diagram of B in the application;

[0034] Figure 9The initial position structure diagram of the dustproof partition plate of the application is shown in the figure.

[0035] Figure 10 The initial position structure diagram of the dustproof partition plate of the application is shown in the figure. Figure 9 The initial position structure diagram of the dustproof partition plate of the application is shown in the figure.

[0036] Figure 11 The initial position structure diagram of the dustproof partition plate of the application is shown in the figure.

[0037] In the figure: 1, brushless motor body; 2, front end cover body; 3, rear end cover body; 4, machine body shell; 5, dustproof circular frame; 6, dustproof partition plate; 7, circulating water tank; 8, heat dissipation circulating pipe; 9, dustproof filter plate; 10, magnetic block assembly; 11, guide sliding rod; 12, driving shaft; 13, rotor core; 14, rotor winding; 15, stator body; 16, positioning tooth ring; 17, speed reduction gear; 18, transmission gear; 19, transmission support; 20, damping pad strip; 21, guide flow turning fan; 22, flow guide channel. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the application.

[0039] Please refer to Figures 1-11 The application provides the following technical solutions:

[0040] Embodiment 1: In order to solve the problems existing in the use of the existing brushless motor, therefore, the energy-saving DC brushless motor of the embodiment is provided with the following technical solutions, which comprises a front end cover body 2 and a rear end cover body 3 constituting a brushless motor body 1, and a machine body shell 4 is fixedly installed between the front end cover body 2 and the rear end cover body 3; a driving shaft 12 is rotatably arranged at the center position of the front end cover body 2 and the rear end cover body 3 through a bearing, and the rear end of the driving shaft 12 extends to the inside of a heat dissipation mechanism; a rotor core 13 is fixedly arranged on the outer wall of the driving shaft 12 in the machine body shell 4, and a rotor winding 14 is arranged at equal angles on the outer wall of the rotor core 13; and a stator body 15 is fixedly arranged at equal angles on the inner wall of the machine body shell 4.

[0041] As Figures 1-3As shown, the brushless motor body 1 is connected between the top three-phase lead and the control module, and then conducts to the rotor winding 14 on the outer wall of the rotor core 13 inside the machine body shell 4 after energization, so as to realize electromagnetic exchange between the rotor winding 14 and the equiangularly distributed stator body 15, thereby driving the rotor core 13 and the driving shaft 12 to rotate, and connecting the driving shaft 12 with external equipment to realize driving operation.

[0042] In order to solve the problems existing in the use of the existing brushless motor, the front end cover body 2 is provided with a dust blocking mechanism, and the dust blocking mechanism comprises a dust blocking circular frame 5, and the dust blocking circular frame 5 is provided with a dust blocking partition plate 6 inside at equiangular intervals.

[0043] The dust blocking mechanism comprises a positioning tooth ring 16 fixedly installed inside the front end cover body 2, and the positioning tooth ring 16 is provided with a speed reduction gear 17 inside at equiangular intervals, and the speed reduction gear 17 is provided with a transmission gear 18 inside, and the transmission gear 18 is fixedly installed on the outer wall of the driving shaft 12.

[0044] The dust blocking mechanism comprises a transmission bracket 19, and the transmission bracket 19 is rotatably arranged at the front end of the positioning tooth ring 16, and the transmission bracket 19 is connected with the speed reduction gear 17 through a bearing, and the transmission bracket 19 is fixedly connected with the inner end of the dust blocking circular frame 5, and the transmission bracket 19 drives the dust blocking circular frame 5 and the dust blocking partition plate 6 inside to rotate.

[0045] The dust blocking mechanism comprises a damping pad strip 20, and the damping pad strip 20 is fixedly arranged at equiangular intervals on the inner side of the dust blocking circular frame 5, and the damping pad strip 20 corresponds to the dust blocking partition plate 6 one by one, and the damping pad strip 20 is used to support and pad after the dust blocking partition plate 6 rotates away from the center, and the rotating dust blocking partition plate 6 realizes the staggered magnetic repulsion effect on the dust blocking filter plate 9 through the magnetic block assembly 10, and the dust blocking filter plate 9 is cleaned to prevent blockage and affect heat dissipation.

[0046] The dust blocking mechanism comprises a guide sliding rod 11, and the guide sliding rod 11 is fixedly installed at equiangular intervals inside the dust blocking circular frame 5, and the equiangularly arranged guide sliding rod 11 slides through the inner center position of the dust blocking partition plate 6, and the dust blocking partition plate 6 slides outward through the centrifugal action of rotation, and then the dust blocking partition plate 6 slides after the magnetic block assembly 10 on the front surface repels the dust blocking filter plate 9.

[0047] As shown in Figure 6 ,Figures 9-10 As shown, the driving shaft 12 drives the transmission gear 18 inside the front end cover body 2 to rotate, so that it engages the external reduction gear 17, which is limited by the positioning gear ring 16 during rotation, so that the reduction gear 17 drives the transmission support 19 connected to the front end bearing to rotate at a reduced speed during rotation and revolution, so that the transmission support 19 drives the front end fixedly connected dustproof circular frame 5, and the dustproof partition plate 6 inside the dustproof circular frame 5 is slidably installed inside the guide slide rod 11, which is affected by the centrifugal force during rotation. The rotating dustproof partition plate 6 slides outward to the damping pad strip 20 at the outer end of the guide slide rod 11, and then opens the dustproof filter plate 9 originally shielded inside the front end cover body 2, and then the dustproof filter plate 9 can realize air intake and heat dissipation.

[0048] Further, the dustproof filter plate 9 not shielded filters dust in the intake air, so that the dust sticks to the outside of the dustproof filter plate 9, and the rotating dustproof partition plate 6 drives the magnetic block assembly 10 arranged inside to slide outward, so that the magnetic block assembly 10 corresponds to the dustproof filter plate 9, and then the magnetic block assembly 10 intermittently repels the dustproof filter plate 9 during rotation, so that the dustproof filter plate 9 reciprocally slides forward and backward inside the front end cover body 2, so as to shake off the adhered dust, preventing the dust from accumulating to block the intake passage and affecting the heat dissipation effect of the brushless motor body 1.

[0049] Embodiment 3: In order to solve the problems existing in the use of the existing brushless motor, therefore, the embodiment solves the problems through the following technical scheme. The rear end of the rear end cover body 3 is provided with a heat dissipation mechanism, and the heat dissipation mechanism comprises a circulating water tank 7, and the front end of the circulating water tank 7 is installed at equal angles through the heat dissipation circulating pipe 8. The front end of the circulating water tank 7 fixedly sleeved to the outside of the rear end cover body 3, and the outer wall of the driving shaft 12 inside the circulating water tank 7 is fixedly installed with a guide fan 21, and the guide fan 21 guides and discharges the heat inside the brushless motor body 1 from front to back in a negative pressure mode.

[0050] The front end of the heat dissipation circulating pipe 8 of the heat dissipation mechanism extends to the outside of the machine body shell 4, and the heat dissipation circulating pipe 8 realizes heat exchange and heat dissipation through the circulating water tank 7 connected through, and the circulating water tank 7 pumps refrigerant liquid into the heat dissipation circulating pipe 8 to circulate and cool. The heat dissipation mechanism comprises a drainage channel 22, and the drainage channel 22 is arranged at equal angles inside the circulating water tank 7 close to the machine body shell 4, and the middle part of the drainage channel 22 and the cavity inside the machine body shell 4 where the guide fan 21 is installed are mutually penetrated, and the drainage channel 22 guides air through the guide fan 21 to assist the heat dissipation of the heat dissipation circulating pipe 8.

[0051] As shown in the drawings, Figure 2 , Figures 4-5As shown, the circulating water tank 7 installed at the rear end of the brushless motor body 1 delivers the cooling liquid to the inside of the through-connected heat dissipation circulating pipe 8 by pumping, and exchanges the heat dissipated to the outside of the fuselage shell 4 through the distribution path of the heat dissipation circulating pipe 8, while the driving rotating shaft 12 inside the fuselage shell 4 drives the flow guide rotating fan 21 to rotate, so that the flow guide rotating fan 21 forms a negative pressure inside the fuselage shell 4, and then the negative pressure fuselage shell 4 extracts air from the outside through the opened drainage channel 22, the outer end of the drainage channel 22 corresponds to the position of the heat dissipation circulating pipe 8, so as to assist the heat dissipation circulating pipe 8 to dissipate heat and reduce the energy consumption of the brushless motor body 1 to improve the operation efficiency.

[0052] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can make modifications to the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to part of the technical features, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An energy-saving brushless DC motor, comprising a front end cover (2) and a rear end cover (3) forming a brushless motor body (1), and a machine body shell (4) fixedly installed between the front end cover (2) and the rear end cover (3); characterized in that Further comprising: The inside of the front end cover (2) is provided with a dust blocking mechanism, and the dust blocking mechanism comprises a dust blocking circular frame (5), and the inside of the dust blocking circular frame (5) is slidably provided with a dust blocking partition plate (6) at equal angles; The rear end of the rear end cover (3) is provided with a heat dissipation mechanism, and the heat dissipation mechanism comprises a circulating water tank (7), and a heat dissipation circulating pipe (8) is installed at the front end of the circulating water tank (7) at equal angles; The dust blocking mechanism comprises a dust blocking filter plate (9), which is slidably arranged in the inside of the front end cover (2) in an elastic connection mode, and the dust blocking filter plate (9) and the dust blocking partition plate (6) correspond to each other, and the inner ends of the front surfaces of the left and right sides of the dust blocking partition plate (6) are provided with magnetic block assemblies (10); The rotating dust blocking partition plate (6) realizes staggered circulating magnetic repulsion effect on the dust blocking filter plate (9) through the magnetic block assemblies (10), and the dust blocking filter plate (9) which slides elastically cleans the dust adhered to the front surface to prevent blockage and affect heat dissipation.

2. The energy-saving brushless DC motor according to claim 1, characterized in that: The dust blocking mechanism comprises a guide sliding rod (11) fixedly installed in the inside of the dust blocking circular frame (5) at equal angles, and the guide sliding rod (11) slidably penetrates the inside center position of the dust blocking partition plate (6) at equal angles, and the dust blocking partition plate (6) slides outward through the centrifugal effect of rotation, and then slides through the magnetic block assemblies (10) on the front surface of the dust blocking partition plate (6) to repel the dust blocking filter plate (9).

3. The energy-saving brushless DC motor according to claim 1, characterized in that: The central positions of the front end cover (2) and the rear end cover (3) are rotatably provided with a driving shaft (12) through a bearing, and the rear end of the driving shaft (12) extends to the inside of the heat dissipation mechanism, the outer wall of the driving shaft (12) in the machine body shell (4) is fixedly provided with a rotor core (13), the outer wall of the rotor core (13) is provided with a rotor winding (14) at equal angles, and the inner wall of the machine body shell (4) is fixedly provided with a stator body (15) at equal angles.

4. The energy-saving brushless DC motor of claim 1, wherein: The dust blocking mechanism comprises a positioning gear ring (16) fixedly installed in the inside of the front end cover (2), the inside of the positioning gear ring (16) is provided with a speed reduction gear (17) at equal angles, the inside of the speed reduction gear (17) is provided with a transmission gear (18), and the transmission gear (18) is fixedly installed on the outer wall of the driving shaft (12).

5. The energy-saving brushless DC motor according to claim 4, characterized in that: The dust blocking mechanism comprises a transmission bracket (19) rotatably arranged at the front end of the positioning gear ring (16), and the transmission bracket (19) and the speed reduction gear (17) are connected through a bearing, and the transmission bracket (19) and the inner end of the dust blocking circular frame (5) are fixedly connected, and the transmission bracket (19) drives the dust blocking circular frame (5) and the dust blocking partition plate (6) inside to rotate.

6. The energy-saving brushless DC motor of claim 1, wherein: The dust prevention mechanism comprises a damping pad strip (20), which is fixed at equal angles on the inner side of the dust prevention circular frame (5), and one-to-one corresponding between the damping pad strip (20) and the dust prevention partition plate (6), and the damping pad strip (20) is used for supporting and abutting after the dust prevention partition plate (6) slides in centrifugal rotation.

7. The energy-saving brushless DC motor of claim 1, wherein: The heat dissipation mechanism comprises a circulating water tank (7) fixed at the front end outside the rear end cover body (3), and the outer wall of the circulating water tank (7) driving the rotating shaft (12) is fixedly installed with a guide fan (21), and the guide fan (21) guides and discharges the heat in the brushless motor body (1) from front to back in a negative pressure mode.

8. The energy-saving brushless DC motor according to claim 7, characterized in that: The heat dissipation mechanism comprises a heat dissipation circulating pipe (8) extending to the outside of the machine body shell (4) at the front end, and the heat dissipation circulating pipe (8) realizes heat exchange and circulation heat dissipation through the through-connection circulating water tank (7), and the circulating water tank (7) pumps refrigerant liquid into the heat dissipation circulating pipe (8) to realize circulation cooling.

9. The energy-saving brushless DC motor according to claim 8, characterized in that: The heat dissipation mechanism comprises a flow guide channel (22), which is provided at equal angles on the inner side of the circulating water tank (7) close to the machine body shell (4), and the middle part of the flow guide channel (22) and the cavity of the machine body shell (4) are mutually through, and the flow guide channel (22) guides air to assist the heat dissipation circulating pipe (8) to dissipate heat through the guide fan (21).

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