CN219779910U - Brushless motor difficult to accumulate ash - Google Patents
Brushless motor difficult to accumulate ash Download PDFInfo
- Publication number
- CN219779910U CN219779910U CN202320174093.4U CN202320174093U CN219779910U CN 219779910 U CN219779910 U CN 219779910U CN 202320174093 U CN202320174093 U CN 202320174093U CN 219779910 U CN219779910 U CN 219779910U
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- China
- Prior art keywords
- brushless motor
- bowl
- shaped concave
- concave part
- end cover
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- 238000009423 ventilation Methods 0.000 claims abstract description 21
- 230000000994 depressogenic effect Effects 0.000 claims 2
- 239000000428 dust Substances 0.000 abstract description 21
- 238000009825 accumulation Methods 0.000 abstract description 13
- 238000010586 diagram Methods 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Brushless Motors (AREA)
Abstract
The utility model provides a brushless motor with difficult dust accumulation, which comprises an upper end cover, a rotating shaft, a bearing, an inner stator and an outer rotor, wherein the inner stator is provided with a lower shell, a permanent magnet is arranged on the inner wall of the lower shell, the lower shell is arranged on the upper end cover, the middle part of the bottom surface of the lower shell is connected with one end of the rotating shaft, the upper end cover is arranged on the rotating shaft, the bearing is arranged between the upper end cover and the rotating shaft, a bowl-shaped concave part is arranged on the end surface of the lower shell, and ventilation holes are arranged around the bowl-shaped concave part. According to the utility model, through the arrangement of the vent hole and the bowl-shaped concave part, when the brushless motor is in operation, the outer rotor rotates, and the bowl-shaped concave part rotates simultaneously, so that the air flow rate at the bowl-shaped concave part close to the vent hole side is larger than the air flow rate at the bowl-shaped concave part far away from the vent hole side, and the trend of exhausting air to the vent hole is formed.
Description
Technical Field
The utility model relates to the field of motors, in particular to a brushless motor not easy to accumulate ash.
Background
The brushless DC motor is composed of a motor main body and a driver, and is a typical electromechanical integrated product. The stator windings of the motor are mostly made into a three-phase symmetrical star connection method, which is very similar to a three-phase asynchronous motor. The rotor of the motor is stuck with a magnetized permanent magnet, and a position sensor is arranged in the motor in order to detect the polarity of the motor rotor. The driver is composed of a power electronic device, an integrated circuit and the like, and has the following functions: receiving starting, stopping and braking signals of the motor to control the starting, stopping and braking of the motor; receiving a position sensor signal and a forward and backward rotation signal, and controlling the on-off of each power tube of the inverter bridge to generate continuous torque; and receiving a speed command and a speed feedback signal for controlling and adjusting the rotating speed and the like.
For brushless motors, particularly for smart home, dust is easily accumulated inside for a long time, and the performance of the brushless motor is affected, so that the prior art has yet to be improved and improved.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, an object of the present utility model is to provide a brushless motor that is not prone to dust deposition.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a brushless motor which is difficult to deposit dust, comprising an upper end cover, a rotating shaft, a bearing, an inner stator and an outer rotor, wherein the inner stator is provided with a lower shell, a permanent magnet is arranged on the inner wall of the lower shell, the lower shell is arranged on the upper end cover, the middle part of the bottom surface of the lower shell is connected with one end of the rotating shaft, the upper end cover is arranged on the rotating shaft, the bearing is arranged between the upper end cover and the rotating shaft, a bowl-shaped concave part is arranged on the end surface of the lower shell, and ventilation holes are arranged around the bowl-shaped concave part.
Further, the brushless motor is not easy to accumulate dust, and the ventilation holes are uniformly distributed around the bowl-shaped concave part.
Further, the brushless motor not easy to accumulate ash is characterized in that the bowl-shaped concave part is round and concave inwards, and the concave bottom end of the bowl-shaped concave part is connected with one end of the rotating shaft.
Further, the brushless motor not easy to accumulate ash is provided, and the vent holes are arranged close to the edge of the bowl-shaped concave part.
Further, the brushless motor is not easy to accumulate dust, and the ventilation holes are arranged around the bowl-shaped concave part at equal intervals and form a circle.
Further, the brushless motor is not easy to accumulate dust, the ventilation holes are arranged corresponding to the number of grooves of the inner stator, and the corresponding number of ventilation holes are correspondingly arranged according to the number of grooves of the inner stator.
Further, the brushless motor which is not easy to accumulate ash is a six-groove three-phase brushless motor.
Further, the brushless motor not easy to accumulate ash is provided with 6 ventilation holes.
Further, the brushless motor is not easy to accumulate dust, and the vent holes are circular vent holes.
Further, the brushless motor is not easy to accumulate dust, and the diameter of the ventilation hole is not more than 6mm.
Compared with the prior art, the brushless motor with the dust accumulation resistance comprises an upper end cover, a rotating shaft, a bearing, an inner stator and an outer rotor, wherein the inner stator is provided with a lower shell, a permanent magnet is arranged on the inner wall of the lower shell, the lower shell is arranged on the upper end cover, the middle part of the bottom surface of the lower shell is connected with one end of the rotating shaft, the upper end cover is arranged on the rotating shaft, the bearing is arranged between the upper end cover and the rotating shaft, a bowl-shaped concave part is arranged on the end surface of the lower shell, and ventilation holes are formed in the periphery of the bowl-shaped concave part. According to the utility model, through the arrangement of the vent hole and the bowl-shaped concave part, when the brushless motor is in operation, the outer rotor rotates, and the bowl-shaped concave part rotates simultaneously, and as the diameter of the bowl-shaped concave part which is closer to the inner side is smaller, the diameter of the bowl-shaped concave part which is closer to the vent hole side is larger than that of the bowl-shaped concave part which is far from the vent hole side, so that the air flow rate of the bowl-shaped concave part which is closer to the vent hole side is larger than that of the bowl-shaped concave part which is far from the vent hole side, and the trend of exhausting to the vent hole is formed.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a brushless motor with less possibility of dust accumulation.
Fig. 2 is a schematic diagram of an internal structure of a brushless motor with less possibility of dust accumulation.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
As shown in fig. 1 and 2, the brushless motor with less possibility of dust accumulation provided by the utility model comprises an upper end cover 101, a rotating shaft 103, a bearing 104, an inner stator 105 and an outer rotor 106, wherein the inner stator 105 is provided with a lower shell 107, a permanent magnet 108 is arranged on the inner wall of the lower shell 107, the lower shell 107 is arranged on the upper end cover 101, the middle part of the bottom surface of the lower shell 107 is connected with one end of the rotating shaft 103, the upper end cover 101 is arranged on the rotating shaft 103, the bearing 104 is arranged between the upper end cover 101 and the rotating shaft 103, a bowl-shaped concave part 113 is arranged on the end surface of the lower shell 107, and a vent hole 114 is arranged around the bowl-shaped concave part 113. According to the utility model, through the arrangement of the vent hole 114 and the bowl-shaped concave part 113, when the brushless motor is in operation, the outer rotor 106 rotates, and the bowl-shaped concave part 113 rotates simultaneously, because the diameter of the bowl-shaped concave part 113 which is closer to the inner side is smaller, the diameter of the bowl-shaped concave part 113 which is closer to the vent hole 114 is larger than that of the bowl-shaped concave part 113 which is far from the vent hole 114, so that the air flow rate of the bowl-shaped concave part 113 which is closer to the vent hole 114 is larger than that of the bowl-shaped concave part 113 which is far from the vent hole 114, and the trend of exhausting to the vent hole 114 is formed.
Further, according to the brushless motor with less dust accumulation provided by the utility model, the plurality of ventilation holes 114 are uniformly distributed around the bowl-shaped concave portion 113. Further, according to the brushless motor with less possibility of dust accumulation, the bowl-shaped concave portion 113 is circular and concave inwards, and the concave bottom end of the bowl-shaped concave portion 113 is connected with one end of the rotating shaft 103. Further, in the brushless motor with less possibility of dust accumulation, the ventilation hole 114 is disposed near the edge of the bowl-shaped recess 113. Further, the brushless motor with less dust accumulation provided by the utility model, the ventilation holes 114 are arranged around the bowl-shaped concave portion 113 at equal intervals and form a circle. Further, in the brushless motor with less dust accumulation, the ventilation holes 114 are arranged corresponding to the number of slots of the inner stator 105, and the corresponding number of ventilation holes 114 is correspondingly arranged according to the number of slots of the inner stator 105. Further, the brushless motor which is not easy to accumulate ash is a six-groove three-phase brushless motor. Further, the brushless motor with less dust accumulation provided by the utility model has 6 ventilation holes 114. Further, the brushless motor with less possibility of dust accumulation is provided by the utility model, and the vent 114 is a circular vent 114. Further, the brushless motor with the dust accumulation resistance is provided, the diameter of the ventilation hole 114 is not more than 6mm, and the ventilation hole 114 is not required to be too large.
In summary, through the arrangement of the vent hole and the bowl-shaped concave part, when the brushless motor is in operation, the outer rotor rotates, and the bowl-shaped concave part rotates simultaneously, because the diameter of the bowl-shaped concave part which is closer to the inner side is smaller, the diameter of the bowl-shaped concave part which is closer to the vent hole side is larger than that of the bowl-shaped concave part which is far from the vent hole side, so that the air flow rate of the bowl-shaped concave part which is closer to the vent hole side is larger than that of the bowl-shaped concave part which is far from the vent hole side, and the trend of exhausting to the vent hole is formed.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (10)
1. The utility model provides a be difficult for grey brushless motor, its characterized in that, includes upper end cover, pivot, bearing, interior stator and external rotor, interior stator has lower casing, be provided with the permanent magnet on the lower shells inner wall, lower casing install in on the upper end cover, the middle part of the bottom surface of lower casing with the one end of pivot is connected, the upper end cover install in the pivot, the bearing install in the upper end cover with between the pivot, the terminal surface of lower casing is provided with bowl form depressed part, be provided with the ventilation hole around the bowl form depressed part.
2. The non-ash prone brushless motor of claim 1 wherein the vent holes are a plurality of evenly distributed around the bowl-shaped recess.
3. The brushless motor of claim 2, wherein the bowl-shaped concave portion is circular and concave inwards, and a concave bottom end of the bowl-shaped concave portion is connected with one end of the rotating shaft.
4. A brushless motor as claimed in claim 3, wherein the vent is located adjacent an edge of the bowl-shaped recess.
5. The non-ash prone brushless motor of claim 4 wherein the vents are arranged around the bowl-shaped recess in a circle equally spaced apart.
6. The brushless motor of claim 5, wherein the ventilation holes are provided corresponding to the number of slots of the inner stator, and the corresponding number of ventilation holes are provided corresponding to how many slots the inner stator has.
7. The brushless motor of claim 6, wherein the brushless motor is a six-slot three-phase brushless motor.
8. The brushless motor of claim 7, wherein the number of the ventilation holes is 6.
9. The brushless motor of claim 8, wherein the vent is a circular vent.
10. A brushless electric machine as claimed in claim 9, wherein the diameter of the vent is not more than 6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320174093.4U CN219779910U (en) | 2023-02-10 | 2023-02-10 | Brushless motor difficult to accumulate ash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320174093.4U CN219779910U (en) | 2023-02-10 | 2023-02-10 | Brushless motor difficult to accumulate ash |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219779910U true CN219779910U (en) | 2023-09-29 |
Family
ID=88134192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320174093.4U Active CN219779910U (en) | 2023-02-10 | 2023-02-10 | Brushless motor difficult to accumulate ash |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219779910U (en) |
-
2023
- 2023-02-10 CN CN202320174093.4U patent/CN219779910U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |