CN214543996U - Brushless motor heat dissipation structure using outer rotor to rotate to form forced air duct - Google Patents
Brushless motor heat dissipation structure using outer rotor to rotate to form forced air duct Download PDFInfo
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- CN214543996U CN214543996U CN202120601020.XU CN202120601020U CN214543996U CN 214543996 U CN214543996 U CN 214543996U CN 202120601020 U CN202120601020 U CN 202120601020U CN 214543996 U CN214543996 U CN 214543996U
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- outer rotor
- brushless motor
- forced air
- rotation
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Abstract
The utility model discloses an utilize the external rotor to rotate brushless motor heat radiation structure who forms forced air duct, including motor housing, motor cabinet, external rotor, stator, its characterized in that: the motor shell is provided with a plurality of gaps, and at least part of the gaps are simultaneously provided with mounting screw holes and air inlets; an air outlet is formed between the motor shell and the motor base; the air duct is formed by an air inlet of the motor casing, a gap between the motor casing and the outer rotor, a gap between the outer rotor and the stator, and an air outlet formed by the motor casing and the motor base in sequence. When the outer rotor rotates, cold air continuously enters the motor, is heated and then is discharged from the air outlet, and heat in the brushless motor is taken out of the motor, so that the purposes of heat dissipation and cooling are achieved.
Description
Technical Field
The utility model belongs to the brushless motor field, concretely relates to utilize outer rotor to rotate brushless motor heat radiation structure who forms forced air duct.
Background
Brushless motor uses in the transmission field that has the control requirement a lot, and the circular telegram coil that generates heat and the electromagnetic energy that dissipates are brushless motor's main source that generates heat.
Under the general condition, the brushless motor naturally radiates heat through a self-closed metal casing, can meet the use requirements of most non-artificial contact environments, and does not influence the use even if the temperature is high.
However, when the brushless motor is applied to human wearable equipment and medical auxiliary equipment, the brushless motor is likely to directly contact with a human body, and a motor shell with high temperature can cause harm to the human body or cause uncomfortable feeling of the human body.
Therefore, it is necessary to find a new technology for dissipating heat and cooling the brushless motor.
SUMMERY OF THE UTILITY MODEL
At least one in defect or improvement demand more than prior art, the utility model provides an utilize the external rotor to rotate the brushless motor heat radiation structure who forms forced air duct, including the motor housing who contains the air intake, the external rotor of the inside and outside air convection of forced electric machine, form motor cabinet, the motor stator etc. of air outlet with motor housing. The air duct is formed by an air inlet of the motor casing, a gap between the motor casing and the outer rotor, a gap between the outer rotor and the stator, and an air outlet formed by the motor casing and the motor base in sequence. When the outer rotor rotates, cold air continuously enters the motor, is heated and then is discharged from the air outlet, and heat in the brushless motor is taken out of the motor, so that the purposes of heat dissipation and cooling are achieved.
In order to achieve the above object, according to an aspect of the present invention, there is provided a brushless motor heat dissipation structure using an external rotor to rotate to form a forced air duct, including a motor housing, a motor base, an external rotor, a stator, characterized in that:
the motor shell is provided with a plurality of gaps, and at least part of the gaps are simultaneously provided with mounting screw holes and air inlets;
an air outlet is formed between the motor shell and the motor base;
the outer rotor and the stator are coaxially arranged in an inner cavity between the motor shell and the motor base, and the outer rotor is provided with a fan blade structure.
Further preferably, a cable hole between the motor housing and the motor base doubles as the air outlet.
Further preferably, the notch is provided at an axial top of the motor housing.
Further preferably, the notch is provided at a circumferential edge of the axial tip.
Further preferably, the air inlet is opened in a radial direction of the notch in a manner of facing the center of the motor housing.
Further preferably, the mounting screw hole is opened in an axial direction of the notch so as to face the motor mount.
Further preferably, the fan blade structure of the outer rotor is a plurality of spokes with chamfer angles.
Further preferably, the outer wall of the motor housing is provided with external cooling fins.
Further preferably, the external heat sink is disposed on a circumferential wall surface of the motor housing.
Further preferably, the heat dissipation structure of the brushless motor is mounted on a wearable device.
The above-described preferred features may be combined with each other as long as they do not conflict with each other.
Generally, through the utility model discloses above technical scheme who conceives compares with prior art, has following beneficial effect:
1. the utility model discloses an utilize the external rotor to rotate the brushless motor heat radiation structure who forms forced air duct, including the motor housing who contains the air intake, the external rotor of the inside and outside air convection of forced electric machine, form motor cabinet, the motor stator etc. of air outlet with motor housing. The air duct is formed by an air inlet of the motor casing, a gap between the motor casing and the outer rotor, a gap between the outer rotor and the stator, and an air outlet formed by the motor casing and the motor base in sequence. When the outer rotor rotates, cold air continuously enters the motor, is heated and then is discharged from the air outlet, and heat in the brushless motor is taken out of the motor, so that the purposes of heat dissipation and cooling are achieved.
2. The utility model discloses an utilize the external rotor to rotate the brushless motor heat radiation structure who forms forced air duct, both guaranteed the integrality of the whole outward appearance of brushless motor, can play good radiating effect to motor self again, kill two birds with one stone.
3. The utility model discloses an utilize the external rotor to rotate the brushless motor heat radiation structure who forms forced air duct, provide a new heat dissipation cooling structural style to extend brushless motor's application range, make brushless motor shell temperature, keep in the touchable temperature range of people, lower brushless motor operating temperature is also good to the stability and the life that improve motor work.
Drawings
Fig. 1 is a schematic view of a heat dissipation structure of a brushless motor using an outer rotor to rotate to form a forced air duct according to an embodiment of the present invention;
FIG. 2 is an enlarged partial schematic view of FIG. 1;
fig. 3 is an assembly cross-sectional view of the heat dissipation structure of the brushless motor using the rotation of the outer rotor to form the forced air duct according to the embodiment of the present invention;
fig. 4 is a schematic diagram of an outer rotor of a heat dissipation structure of a brushless motor using the rotation of the outer rotor to form a forced air duct according to an embodiment of the present invention;
fig. 5 is a schematic diagram of outer rotor spokes of a brushless motor heat dissipation structure using outer rotor rotation to form a forced air duct according to an embodiment of the present invention;
fig. 6 is a schematic stator diagram of a brushless motor heat dissipation structure using an outer rotor to rotate to form a forced air duct according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. The present invention will be described in further detail with reference to the following embodiments.
As a preferred embodiment of the present invention, as shown in fig. 1-6, the present invention provides a heat dissipation structure of a brushless motor, which utilizes the rotation of an external rotor to form a forced air duct, and comprises a motor housing 1, a motor base 2, an external rotor 3, and a stator 4.
As shown in fig. 1-2, the motor housing 1 has, for example, 6 notches 11, and at least a portion of the notches 11 simultaneously have mounting screw holes 12 and air inlets 13; further preferably, the notch 11 is arranged at the axial top of the motor housing 1. Further preferably, said notch 11 is provided at the circumferential edge of said axial top. Further preferably, the air inlet 13 is opened in a radial direction of the notch 11 toward the center of the motor housing 1. Further preferably, the mounting screw hole 12 is opened in the axial direction of the notch 11 so as to face the motor base 2. That is, there is an air inlet 13 near the six mounting screw holes 12 at the end, and the cold air outside the motor can enter the motor through the six air inlets 13.
As shown in fig. 1-2, an air outlet 14 is arranged between the motor housing 1 and the motor base 2; further preferably, a cable hole between the motor housing 1 and the motor base 2 doubles as the air outlet 14.
As shown in fig. 3-6, the outer rotor 3 and the stator 4 are coaxially installed in the inner cavity between the motor housing 1 and the motor base 2, and the outer rotor 3 has a fan blade structure. Further preferably, the fan blade structure of the outer rotor 3 is a plurality of spokes 31 with chamfered corners. The principle is similar to that of a fan blade, the inward direction is unified, namely, the stator direction has a certain oblique angle, when the outer rotor 3 rotates, the air pressure around the stator is increased, and hot air around the stator is forced to be sequentially discharged out of the motor through cable holes; meanwhile, the air pressure between the outer rotor 3 and the end face of the motor shell 1 is reduced to form negative pressure, and cold air outside the motor enters the motor through six air inlets 13 beside the mounting screws. The structure characteristics of the motor shell 1 and the outer rotor 3 are fully utilized, the self heat dissipation effect of the motor can be achieved, and other auxiliary heat dissipation means are not needed.
As shown in fig. 1-2, it is further preferable that the outer wall of the motor housing 1 is provided with external heat dissipation fins 15. Further preferably, the external heat sink 15 is disposed on a circumferential wall surface of the motor housing 1. The external heat sink 15 is a parallel multi-layer structure.
Further preferably, brushless motor heat radiation structure installs on wearable equipment, but the direct contact human body can not cause the injury to the human body, dresses comfortablely.
The utility model discloses an utilize the external rotor to rotate the brushless motor heat radiation structure who forms forced air duct, including the motor housing who contains the air intake, the external rotor of the inside and outside air convection of forced electric machine, form motor cabinet, the motor stator etc. of air outlet with motor housing. The air duct is formed by an air inlet of the motor casing, a gap between the motor casing and the outer rotor, a gap between the outer rotor and the stator, and an air outlet formed by the motor casing and the motor base in sequence. When the outer rotor rotates, cold air continuously enters the motor, is heated and then is discharged from the air outlet, and heat in the brushless motor is taken out of the motor, so that the purposes of heat dissipation and cooling are achieved.
The utility model discloses an utilize the external rotor to rotate the brushless motor heat radiation structure who forms forced air duct, both guaranteed the integrality of the whole outward appearance of brushless motor, can play good radiating effect to motor self again, kill two birds with one stone.
The utility model discloses an utilize the external rotor to rotate the brushless motor heat radiation structure who forms forced air duct, provide a new heat dissipation cooling structural style to extend brushless motor's application range, make brushless motor shell temperature, keep in the touchable temperature range of people, lower brushless motor operating temperature is also good to the stability and the life that improve motor work.
It will be appreciated that the embodiments of the system described above are merely illustrative, in that elements illustrated as separate components may or may not be physically separate, may be located in one place, or may be distributed over different network elements. Some or all of the modules can be selected according to actual needs to achieve the purpose of the scheme of the embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
In addition, it should be understood by those skilled in the art that in the specification of the embodiments of the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In the description of the embodiments of the present invention, a large number of specific details are explained. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description. Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the embodiments of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects.
However, the disclosed method should not be interpreted as reflecting an intention that: rather, the claimed embodiments of the invention require more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of an embodiment of this invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, and not to limit the same; although the embodiments of the present invention have been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides an utilize outer rotor to rotate brushless motor heat radiation structure who forms forced air duct, includes motor housing (1), motor cabinet (2), outer rotor (3), stator (4), its characterized in that:
the motor shell (1) is provided with a plurality of gaps (11), and at least part of the gaps (11) are simultaneously provided with mounting screw holes (12) and an air inlet (13);
an air outlet (14) is arranged between the motor shell (1) and the motor base (2);
the outer rotor (3) and the stator (4) are coaxially arranged in an inner cavity between the motor shell (1) and the motor base (2), and the outer rotor (3) is provided with a fan blade structure.
2. The heat dissipating structure of a brushless motor using rotation of an outer rotor to form a forced air passage as claimed in claim 1, wherein:
and a cable hole between the motor shell (1) and the motor base (2) is also used as the air outlet (14).
3. The heat dissipating structure of a brushless motor using rotation of an outer rotor to form a forced air passage according to claim 1 or 2, wherein:
the notch (11) is arranged at the axial top of the motor shell (1).
4. The heat dissipating structure of a brushless motor using rotation of an outer rotor to form a forced air passage as claimed in claim 3, wherein:
the notch (11) is arranged at the circumferential edge of the axial top.
5. The heat dissipating structure of a brushless motor using rotation of an outer rotor to form a forced air passage as claimed in claim 4, wherein:
the air inlet (13) is arranged in the radial direction of the notch (11) in a mode of facing the center of the motor shell (1).
6. The heat dissipating structure of a brushless motor using rotation of an outer rotor to form a forced air passage as claimed in claim 4, wherein:
the mounting screw hole (12) is opened in the axial direction of the notch (11) in a manner of facing the motor base (2).
7. The heat dissipating structure of a brushless motor using rotation of an outer rotor to form a forced air passage as claimed in claim 1, wherein:
the fan blade structure of the outer rotor (3) is a plurality of spokes (31) with oblique angles.
8. The heat dissipating structure of a brushless motor using rotation of an outer rotor to form a forced air passage as claimed in claim 1, wherein:
the outer wall of the motor shell (1) is provided with external radiating fins (15).
9. The heat dissipating structure of a brushless motor using rotation of an outer rotor to form a forced air passage as claimed in claim 8, wherein:
the external radiating fins (15) are arranged on the circumferential wall surface of the motor shell (1).
10. The heat dissipating structure of a brushless motor using rotation of an outer rotor to form a forced air passage as claimed in claim 1, wherein:
the brushless motor heat dissipation structure is installed on wearable equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120601020.XU CN214543996U (en) | 2021-03-24 | 2021-03-24 | Brushless motor heat dissipation structure using outer rotor to rotate to form forced air duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120601020.XU CN214543996U (en) | 2021-03-24 | 2021-03-24 | Brushless motor heat dissipation structure using outer rotor to rotate to form forced air duct |
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| Publication Number | Publication Date |
|---|---|
| CN214543996U true CN214543996U (en) | 2021-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120601020.XU Active CN214543996U (en) | 2021-03-24 | 2021-03-24 | Brushless motor heat dissipation structure using outer rotor to rotate to form forced air duct |
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| CN (1) | CN214543996U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI822433B (en) * | 2022-11-02 | 2023-11-11 | 財團法人工業技術研究院 | External rotor motor |
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2021
- 2021-03-24 CN CN202120601020.XU patent/CN214543996U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI822433B (en) * | 2022-11-02 | 2023-11-11 | 財團法人工業技術研究院 | External rotor motor |
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