CN210239801U - Secondary air pump based on brushless motor drive - Google Patents
Secondary air pump based on brushless motor drive Download PDFInfo
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- CN210239801U CN210239801U CN201920760089.XU CN201920760089U CN210239801U CN 210239801 U CN210239801 U CN 210239801U CN 201920760089 U CN201920760089 U CN 201920760089U CN 210239801 U CN210239801 U CN 210239801U
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- 238000009434 installation Methods 0.000 claims abstract description 54
- 238000002955 isolation Methods 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 27
- 238000003475 lamination Methods 0.000 claims description 26
- 230000007704 transition Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 11
- 230000008901 benefit Effects 0.000 description 6
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
本实用新型公开了一种基于无刷电机驱动的二次空气泵，包括泵壳体、前端盖和后端盖，前端盖、后端盖分别固定在泵壳体的上、下端部，使泵壳体形成密闭空间，泵壳体从上到下依次分为叶轮室、无刷电机轴承室、控制器安装室，无刷电机轴承室、控制器安装室之间设置有隔离垫板，前端盖上设置有进气管道，前端盖上设置有隆起的环形气流通道，环形气流通道与进气管道相连接，叶轮室位于环形气流通道的正下方，叶轮室内安装有叶轮体，无刷电机轴承室内安装有无刷电机结构。本实用新型结构紧凑，设计合理，能够实现承载无刷电机，实现噪声低，功率密度大，消除电刷的摩擦阻力的效果，且密封效果好，便于组装，具有良好的应用前景。
The utility model discloses a secondary air pump driven by a brushless motor, which comprises a pump casing, a front end cover and a rear end cover. The casing forms a closed space. The pump casing is divided into the impeller chamber, the brushless motor bearing chamber, and the controller installation chamber from top to bottom. An isolation pad is arranged between the brushless motor bearing chamber and the controller installation chamber. The front end cover There is an air inlet pipe on the upper part, a raised annular air flow channel is arranged on the front end cover, the annular air flow channel is connected with the air inlet pipe, the impeller chamber is located directly below the annular air flow channel, the impeller body is installed in the impeller chamber, and the brushless motor bearing chamber A brushless motor structure is installed. The utility model has compact structure and reasonable design, can carry brushless motors, realizes low noise, high power density, eliminates frictional resistance of electric brushes, and has good sealing effect, convenient assembly, and good application prospects.
Description
Technical Field
The utility model relates to an automobile exhaust treatment technical field, concretely relates to secondary air pump based on brushless motor drive.
Background
Since the implementation of automotive exhaust pollution control standards worldwide, secondary air injection systems have been widely used in automobiles. The secondary air injection system is actually a practical technique for exhaust emission control to reduce the amount of HC and CO discharged in the exhaust gas. Function of the secondary Air Injection (AI) system: under a certain working condition, a certain amount of fresh air is sent into an exhaust pipe (CO and HC in exhaust gas discharged by an engine are promoted to be further oxidized), so that the emission of harmful substances in the exhaust gas of the automobile is reduced; under the starting working condition, the secondary air injection system can also accelerate the temperature rise of a three-way catalytic converter (tail gas purifier) so that the engine enters an air-fuel ratio closed-loop control process as soon as possible, thereby improving the working performance of the engine.
At present, in a secondary air injection system, a secondary air pump is used for providing injection air flow, and the secondary air pump is required to have high rotating speed and response speed.
The brushless motor is driven, noise is low, power density is high, friction resistance of an electric brush is eliminated, rotor rotational inertia is small, output efficiency is high, and the brushless motor driven secondary air pump is more advantageous than a secondary air pump driven by a brush motor. Moreover, the current brushless motor structure still can not be applicable to current brush motor driven secondary air pump structure and use, and current brush motor driven secondary air pump structure, sealed effect is not good, and bulky, and spare part is numerous, the rapid Assembly shaping of being not convenient for, low in production efficiency scheduling problem, moreover, has the deviation of mounting dimension easily in the assembling process, and the qualification rate is not high.
Therefore, how to construct a secondary air pump structure which is driven by a brushless motor and is suitable for an automobile, high rotating speed and high response speed are realized, and the output power and the effect of the secondary air pump are ensured is the problem which needs to be solved currently.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defects of the secondary air pump driven by the brush motor in the prior art. The utility model discloses a secondary air pump based on brushless motor drive, compact structure, reasonable in design can realize bearing brushless motor, realizes that the noise is low, and power density is big, eliminates the frictional resistance's of brush effect, and sealed effectual, and the equipment of being convenient for has good application prospect.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
a secondary air pump based on brushless motor drive comprises a pump shell, a front end cover and a rear end cover, wherein the front end cover and the rear end cover are respectively fixed at the upper end part and the lower end part of the pump shell to enable the pump shell to form a closed space,
the pump shell is sequentially divided into an impeller chamber, a brushless motor bearing chamber and a controller installation chamber from top to bottom, an isolation pad plate is arranged between the brushless motor bearing chamber and the controller installation chamber,
the front end cover is provided with an air inlet pipeline, the front end cover is provided with a raised annular airflow channel, the annular airflow channel is connected with the air inlet pipeline,
the impeller chamber is positioned right below the annular airflow channel, an impeller body is arranged in the impeller chamber, a brushless motor structure is arranged in the brushless motor bearing chamber, a driving bearing of the brushless motor structure extends upwards and is connected with the impeller body, the brushless motor structure controls the impeller body to rotate,
and a control circuit board is arranged in the controller installation chamber and electrically connected with the brushless motor structure.
In the brushless motor drive-based secondary air pump, the diameter of the impeller chamber is larger than that of the bearing chamber of the brushless motor, and a first annular step part is formed between the impeller chamber and the bearing chamber of the brushless motor; the diameter of the controller installation chamber is larger than that of the brushless motor bearing chamber, and a second annular step portion is formed between the controller installation chamber and the brushless motor bearing chamber.
In the brushless motor-driven secondary air pump, the impeller chamber is connected with an air outlet pipeline, the air outlet pipeline is communicated with the impeller chamber, the impeller body comprises an impeller disc body, a driving bearing mounting sleeve is arranged in the middle of the impeller disc body, a first driving bearing mounting hole is arranged in the middle of the driving bearing mounting sleeve, the periphery of the driving bearing mounting sleeve is connected with the inner wall of the impeller disc body through connecting rods which are distributed at equal intervals,
the impeller is characterized in that blade bodies distributed at equal intervals are arranged on the outer wall of the impeller disc body, the blade bodies are V-shaped, an annular structure formed by the blade bodies is located right below the annular airflow channel, one open end of each blade body is connected with the outer wall of the impeller disc body, and the other open end of each blade body is the outer edge of the impeller body.
In the secondary air pump driven by the brushless motor, the air outlet pipeline and the annular structure formed by the blade body are on the same plane.
In the secondary air pump driven by the brushless motor, the opening angle of the blade body is between 110 and 160 °.
The brushless motor driven secondary air pump comprises a rotor unit and a stator unit, wherein the rotor unit is nested inside the stator unit,
the rotor unit comprises a rotor silicon steel lamination, the rotor silicon steel lamination is in a regular quadrangular prism shape, four edges of the rotor silicon steel lamination are in quarter arc transition, the rotor silicon steel lamination forms an eccentric structure, four groups of magnetic tile installation through holes distributed at equal intervals are arranged on the rotor silicon steel lamination, each magnetic tile installation through hole is positioned at the inner side of two adjacent edges at corresponding positions, magnetic tiles are embedded in the magnetic tile installation through holes, a second driving bearing installation hole is arranged in the middle of the rotor silicon steel lamination,
the stator unit comprises a stator core, a rotor unit mounting hole is formed in the middle of the stator core, the circumference of the stator core is provided with block stator mounting holes distributed at equal intervals, and the block stator mounting holes are used for placing block stators.
In the aforementioned secondary air pump driven by the brushless motor, the two end portions of the magnetic shoe installation through hole are provided with the arc notch strips convenient for fixing the magnetic shoe.
In the aforementioned secondary air pump driven by the brushless motor, a first sealing ring is disposed between the front end cover and the upper end portion of the pump housing, and a second sealing ring is disposed between the rear end cover and the lower end portion of the pump housing.
In the aforementioned secondary air pump driven by the brushless motor, the outer wall of the second annular step portion is provided with the bosses distributed at equal intervals, the bosses are internally provided with the first fixing bolt holes, the openings of the first fixing bolt holes extend into the controller installation chamber, and the isolation base plate is fixed between the controller installation chamber and the brushless motor bearing chamber through the fixing bolts penetrating through the first fixing bolt holes.
The aforesaid is based on brushless motor driven secondary air pump, be provided with the circuit board mounting disc in the controller mounting disc, the border of circuit board mounting disc is provided with the second fixing bolt hole, the circuit board mounting disc passes through second fixing bolt hole and keeps apart backing plate fixed connection, still be provided with the annular sand grip that is used for the card to put the control scheme board on the circuit board mounting disc, the control scheme board is fixed in the annular sand grip, the controller mounting chamber of circuit board mounting disc below is the cavity structure.
The utility model has the advantages that: the utility model discloses a secondary air pump based on brushless motor drive, compact structure, reasonable in design can realize bearing brushless motor, realizes that the noise is low, and power density is big, eliminates the frictional resistance's of brush effect, and sealed effectual, and the equipment of being convenient for has following advantage:
(1) the front end cover is provided with a raised annular airflow channel, so that more air is output through the impeller body, and the efficiency of the brushless output end is improved to the maximum extent;
(2) the impeller body has novel structure, high pressure, large air volume, low noise, long service life, high air volume control stability and easy operation, the edge of the impeller body is provided with a plurality of blades, when the impeller rotates, air in the two blades moves towards the outer edge rapidly due to centrifugal action to transmit energy, the wind pressure is rapidly superposed, high pressure or high force is formed, the speed is increased, and the wind pressure is rapidly superposed due to the energy transmission of the plurality of blades, so that high pressure or high suction is formed, and the air outlet efficiency is ensured;
(3) the pump shell is sealed by the front end cover and the rear end cover, the heat dissipation performance of the pump shell is good, the pump shell is sequentially divided into an impeller chamber, a brushless motor bearing chamber and a controller installation chamber from top to bottom, and an isolation base plate is arranged between the brushless motor bearing chamber and the controller installation chamber, so that the assembly and disassembly are simple and convenient, the installation size deviation caused by assembly is avoided, and the failure rate of a product is reduced;
(4) the isolation pad is a brushless motor bearing chamber on one side, a controller installation chamber on the other side, bosses which are distributed at equal intervals are arranged on the outer wall of the second annular step part, fixing bolt holes are arranged in the bosses, the isolation pad is fixed between the controller installation chamber and the brushless motor bearing chamber through fixing bolts penetrating through the fixing bolt holes, the isolation pad has a fixing effect, and meanwhile, the bearing heat dissipation problem caused by the operation of a brushless motor can be solved by conducting metal heat conduction performance to the bosses;
(5) the utility model discloses a rotor silicon steel lamination, including rotor unit, embedded rotor unit, the magnetic shoe embedding rotor assembly of rotor unit, embedded rotor design can not produce the problem that the magnetic shoe drops when the motor is high-speed rotatory, has also reduced the process that outer formula magnet design needs installation magnet cover to fix magnet, and rotor silicon steel lamination is regular quadrangular shape, and four edges of rotor silicon steel lamination are quarter circular arc transition, make rotor silicon steel lamination constitute eccentric structure, and the inhomogeneous air gap that this eccentric structure formed has following advantage: firstly, the self-starting of the brushless motor is facilitated; secondly, the generated uneven air gap can solve the problems of pulsation and control caused by multiple harmonics; thirdly, the eccentric structure needs to utilize a control circuit compensation mechanism to eliminate the problem of uneven pulling of the inductor facing the eccentric structure;
(6) the stator unit is designed in a block mode, the block stators are independently wound, and the block stators after the winding is completed are combined and pressed to form the stator unit.
Drawings
Fig. 1 is a schematic structural diagram of a secondary air pump based on brushless motor driving according to the present invention;
FIG. 2 is a side view of the brushless motor drive based secondary air pump of the present invention;
FIG. 3 is a top view of the brushless motor drive based secondary air pump of the present invention;
fig. 4 is a schematic structural view of the front end cover of the present invention;
fig. 5 is a bottom view of the front end cap of the present invention;
fig. 6 is a schematic structural view of the rear end cap of the present invention;
fig. 7 is a schematic structural view of a pump housing of the present invention;
fig. 8 is a side view of the pump housing of the present invention;
fig. 9 is a top view of the pump housing after the impeller body of the present invention is installed;
fig. 10 is a schematic structural view of an impeller body of the present invention;
fig. 11 is an internal structural view of a pump housing of the present invention;
fig. 12 is a schematic structural view of a stator unit of the present invention;
fig. 13 is a schematic structural view of a rotor unit of the present invention;
fig. 14 is a schematic structural view of the circuit board mounting plate of the present invention;
fig. 15 is a bottom view of the circuit board mounting tray of the present invention.
The designations in the drawings have the following meanings:
1: a pump housing; 2: a front end cover; 201: an air intake duct; 202: an annular gas flow passage; 3: a rear end cap; 4: an impeller chamber; 401: an air outlet pipe; 5: a brushless motor bearing chamber; 6: a controller installation room; 7: an impeller body; 701: the impeller disc body; 702: a drive bearing mounting sleeve; 703: a first drive bearing mounting hole; 704: a connecting rod; 705: a blade body; 8: a brushless motor structure; 801: a rotor unit; 802: a stator unit; 803: laminating the rotor silicon steel; 804: mounting through holes on the magnetic shoes; 805: a second drive bearing mounting hole; 806: a rotor unit mounting hole; 807: a block stator mounting hole; 808: a stator core; 809: an arc notch strip; 9: a drive bearing; 10: a control circuit board; 11: a first annular step portion; 12: a second annular step portion; 13: a boss; 14: a second anchor bolt hole; 15: a circuit board mounting plate; 16: an annular rib; 17: a raised strip; 18: isolating the base plate; 19: a position sensor mounting post.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in fig. 1-15, the brushless motor-driven secondary air pump of the present invention comprises a pump housing 1, a front cover 2 and a rear cover 3, wherein the front cover 2 and the rear cover 3 are respectively fixed on the upper and lower ends of the pump housing 1, so that the pump housing 1 forms a closed space, and has a compact structure, a small volume, and is convenient for use and assembly,
the pump shell 1 is sequentially divided into an impeller chamber 4, a brushless motor bearing chamber 5 and a controller installation chamber 6 from top to bottom, an isolation base plate 18 is arranged between the brushless motor bearing chamber 5 and the controller installation chamber 6, the pump shell is divided into modular partitions, so that the assembly of parts inside the pump shell 1 is facilitated,
the front end cover 2 is provided with an air inlet pipeline 201, the front end cover 2 is provided with a raised annular airflow channel 202, the annular airflow channel 202 is connected with the air inlet pipeline 201, the annular airflow channel 202 can guide the flow of inlet air, so that more air is output through the impeller chamber 4, the efficiency of the output end of the motor is improved to the greatest extent,
the impeller chamber 4 is positioned right below the annular airflow channel 202, an impeller body 7 is installed in the impeller chamber 4, a brushless motor structure 8 is installed in the brushless motor bearing chamber 5, a driving bearing 9 of the brushless motor structure 8 extends upwards and is connected with the impeller body 7, the brushless motor structure 8 controls the impeller body 7 to rotate,
the utility model discloses a brushless motor structure 8 replaces traditional brush motor, and it is low to possess the noise, and power density is big, eliminates the frictional resistance's of brush effect, and the secondary of being more convenient for admits air the design principle of pump, improves secondary pump result of use that admits air.
And a control circuit board 10 is arranged in the controller installation chamber 6, the control circuit board 10 is electrically connected with the brushless motor structure 8, and the control circuit board 10 is used for controlling the brushless motor structure 8 to work.
Preferably, the diameter of the impeller chamber 4 is larger than that of the brushless motor bearing chamber 5, and a first annular step part 11 is formed between the impeller chamber and the brushless motor bearing chamber; the diameter of controller installation chamber 6 is greater than the diameter of brushless motor bearing chamber 5, and forms second annular step portion 12 between the two, compact structure, reasonable in design is applicable to the installation of automobile vehicle.
Preferably, the impeller chamber 4 is connected with an air outlet pipe 401, the air outlet pipe 401 is communicated with the impeller chamber 4, the impeller body 7 comprises an impeller disc body 701, a driving bearing installation sleeve 702 is arranged in the middle of the impeller disc body 701, a first driving bearing installation hole 703 is arranged in the middle of the driving bearing installation sleeve 702, the periphery of the driving bearing installation sleeve 702 is connected with the inner wall of the impeller disc body 701 through connecting rods 704 which are distributed at equal intervals,
the outer wall of the impeller disc body 701 is provided with blade bodies 705 distributed at equal intervals, the blade bodies 705 are in a V shape, an annular structure formed by the blade bodies 705 is positioned right below the annular airflow channel 202, one open end of each blade body 705 is connected with the outer wall of the impeller disc body 701, the other open end of each blade body 705 is the outer edge of the impeller body 7, the air outlet pipeline 401 and the annular structure formed by the blade bodies 705 are on the same plane, so that air generated by the blade bodies 705 can flow conveniently, and the air is discharged from the air outlet pipeline 401 at the first time. Preferably, the opening angle of the blade body 705 is between 110 ° and 160 °, so that the air in two adjacent blade bodies 705 can be rapidly moved toward the outer edge direction, energy is transmitted, and the wind pressure is rapidly superposed, thereby forming high pressure or high force, and the velocity of the high pressure is increased.
Preferably, the brushless motor structure 8 comprises a rotor unit 801 and a stator unit 802, wherein the rotor unit 801 is nested inside the stator unit 802,
the rotor unit 801 comprises rotor silicon steel laminations 803, the rotor silicon steel laminations 803 are in a regular quadrangular prism shape, four edges of the rotor silicon steel laminations 803 are in quarter arc transition, so that the rotor silicon steel laminations 803 form an eccentric structure, four groups of magnetic shoe mounting through holes 804 which are distributed at equal intervals are arranged on the rotor silicon steel laminations 803, each magnetic shoe mounting through hole 804 is positioned on the inner side of two adjacent edges at corresponding positions, magnetic shoes are embedded in the magnetic shoe mounting through holes 804, a second driving bearing mounting hole 805 is arranged in the middle of each rotor silicon steel lamination 803,
the stator unit 802 comprises a stator core 808, a rotor unit mounting hole 806 is formed in the middle of the stator core 808, block stator mounting holes 807 which are distributed at equal intervals are formed in the periphery of the stator core 808, and the block stator mounting holes 807 are used for placing block stators.
Preferably, two ends of the magnetic tile installation through hole 804 are provided with arc notch strips 809 convenient for fixing the magnetic tiles, so that the magnetic tiles can be conveniently installed in a guiding manner, and the arc notch strips 809 can be filled with resin to ensure the reliable fixation of the magnetic tiles.
Preferably, a first sealing ring is arranged between the front end cover 2 and the upper end part of the pump housing 1, and a second sealing ring is arranged between the rear end cover 3 and the lower end part of the pump housing 1, so that the sealing degree between the front end cover 2 and the pump housing 1 and between the rear end cover 3 and the pump housing 1 can be improved.
Preferably, the outer wall of second annular step portion 12 is provided with the boss 13 of equal interval distribution, set up first fixing bolt hole in the boss 13, the opening of first fixing bolt hole extends to in the controller installation room 6, keep apart backing plate 18 through the fixing bolt who runs through first fixing bolt hole fix between controller installation room 6, brushless motor bearing room 5, this boss 13 when fixed isolation backing plate 18, can increase pump housing 1 and external area of contact, improves the radiating effect, guarantees brushless motor structure 8's good reliable operation.
Preferably, be provided with circuit board mounting disc 15 in the controller installation room 6, the border of circuit board mounting disc 15 is provided with second fixing bolt hole 14, circuit board mounting disc 15 is through second fixing bolt hole 14 and 18 fixed connection of isolation backing plate, still be provided with the annular sand grip 16 that is used for blocking control circuit board 10 on the circuit board mounting disc 15, control circuit board 10 is fixed in annular sand grip 16, can improve control circuit board 10 fixed mounting's reliability, controller installation room 6 of circuit board mounting disc 15 below is the cavity structure, is provided with the heat dissipation space, and the circulation of the air of being convenient for improves the radiating effect, be provided with a plurality of position sensor erection columns 19 on the circuit board mounting disc 15 for controller installation room 6 is given to the operation condition that detects brushless motor structure 8, realizes real time monitoring.
Preferably, the pump housing 1, the front end cover 2 and the rear end cover 3 are provided with protruding strips 17 at the same positions of the circumferential edges thereof, which are distributed at equal intervals, so as to facilitate the reliable fixation among the pump housing 1, the front end cover 2 and the rear end cover 3.
The utility model discloses a rated revolution based on brushless motor driven secondary air pump reaches 12000r/min under the 75 ℃ of sea level operating temperature's the condition, reaches 15000r/min at the highest rotational speed of elevation 4000m department, can satisfy the six emission requirements in state of car.
To sum up, the utility model discloses a secondary air pump based on brushless motor drive, compact structure, reasonable in design can realize bearing brushless motor, realizes that the noise is low, and power density is big, eliminates the frictional resistance's of brush effect, and sealed effectual, and the equipment of being convenient for has following advantage:
(1) the front end cover is provided with a raised annular airflow channel, so that more air is output through the impeller body, and the efficiency of the brushless output end is improved to the maximum extent;
(2) the impeller body has novel structure, high pressure, large air volume, low noise, long service life, high air volume control stability and easy operation, the edge of the impeller body is provided with a plurality of blades, when the impeller rotates, air in the two blades moves towards the outer edge rapidly due to centrifugal action to transmit energy, the wind pressure is rapidly superposed, high pressure or high force is formed, the speed is increased, and the wind pressure is rapidly superposed due to the energy transmission of the plurality of blades, so that high pressure or high suction is formed, and the air outlet efficiency is ensured;
(3) the pump shell is sealed by the front end cover and the rear end cover, the heat dissipation performance of the pump shell is good, the pump shell is sequentially divided into an impeller chamber, a brushless motor bearing chamber and a controller installation chamber from top to bottom, and an isolation base plate is arranged between the brushless motor bearing chamber and the controller installation chamber, so that the assembly and disassembly are simple and convenient, the installation size deviation caused by assembly is avoided, and the failure rate of a product is reduced;
(4) the isolation pad is a brushless motor bearing chamber on one side, a controller installation chamber on the other side, bosses which are distributed at equal intervals are arranged on the outer wall of the second annular step part, fixing bolt holes are arranged in the bosses, the isolation pad is fixed between the controller installation chamber and the brushless motor bearing chamber through fixing bolts penetrating through the fixing bolt holes, the isolation pad has a fixing effect, and meanwhile, the bearing heat dissipation problem caused by the operation of a brushless motor can be solved by conducting metal heat conduction performance to the bosses;
(5) the utility model discloses a rotor silicon steel lamination, including rotor unit, embedded rotor unit, the magnetic shoe embedding rotor assembly of rotor unit, embedded rotor design can not produce the problem that the magnetic shoe drops when the motor is high-speed rotatory, has also reduced the process that outer formula magnet design needs installation magnet cover to fix magnet, and rotor silicon steel lamination is regular quadrangular shape, and four edges of rotor silicon steel lamination are quarter circular arc transition, make rotor silicon steel lamination constitute eccentric structure, and the inhomogeneous air gap that this eccentric structure formed has following advantage: firstly, the self-starting of the brushless motor is facilitated; secondly, the generated uneven air gap can solve the problems of pulsation and control caused by multiple harmonics; thirdly, the eccentric structure needs to utilize a control circuit compensation mechanism to eliminate the problem of uneven pulling of the inductor facing the eccentric structure;
(6) the stator unit is designed in a block mode, the block stators are independently wound, and the block stators after the winding is completed are combined and pressed to form the stator unit.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920760089.XU CN210239801U (en) | 2019-05-24 | 2019-05-24 | Secondary air pump based on brushless motor drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920760089.XU CN210239801U (en) | 2019-05-24 | 2019-05-24 | Secondary air pump based on brushless motor drive |
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| Publication Number | Publication Date |
|---|---|
| CN210239801U true CN210239801U (en) | 2020-04-03 |
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| CN201920760089.XU Active CN210239801U (en) | 2019-05-24 | 2019-05-24 | Secondary air pump based on brushless motor drive |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110195633A (en) * | 2019-05-24 | 2019-09-03 | 江苏超力电器有限公司 | Secondary air pump based on brushless motor driving |
| WO2025116604A1 (en) * | 2023-11-29 | 2025-06-05 | 주식회사 아모텍 | Slim axial gap type electric motor and electric water pump using same |
-
2019
- 2019-05-24 CN CN201920760089.XU patent/CN210239801U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110195633A (en) * | 2019-05-24 | 2019-09-03 | 江苏超力电器有限公司 | Secondary air pump based on brushless motor driving |
| WO2025116604A1 (en) * | 2023-11-29 | 2025-06-05 | 주식회사 아모텍 | Slim axial gap type electric motor and electric water pump using same |
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Address after: No. 1 Xingyuan Road, Industrial Park, Panxian Town, Danyang City, Zhenjiang City, Jiangsu Province, China 212300 Patentee after: Jiangsu Chaoli Electric Appliance Co.,Ltd. Country or region after: China Address before: 59, Gao Lu, Zhenjiang, Danyang, Jiangsu Patentee before: JIANGSU CHAOLI ELECTRIC Inc. Country or region before: China |