TW201933733A - Motor and heat-dissipation device thereof - Google Patents

Abstract

A motor includes a stator, a rotor, a plurality of heatsinks and a heat-dissipation device. The stator has a housing having a first surface, a second surface and a plurality of sidewalls. The heatsinks are respectively disposed on the different sidewalls of the housing. The heat-dissipation device includes a wind-guiding cover and a plurality of first fans. The wind-guiding cover is sleeved on the motor from the bottom of the motor. The wind-guiding cover has a wind-guiding main board and a plurality of wind-guiding lateral boards. The wind-guiding lateral boards are vertically extended from different lateral edges of the wind-guiding main board towards the same direction, respectively. Each wind-guiding lateral board is disposed corresponding to one of the heatsinks. At least one of the wind-guiding lateral boards has at least one hole. The amount of the hole is equal to the amount of the first fan. The first fan is one-to-one received by the corresponded hole.

Description

Motor and its heat sink

The present invention relates to a motor, and more particularly to a motor which is formed by stamping a silicon steel sheet to form an integrated structure of a motor casing and a stator to greatly improve the heat dissipation effect and a heat dissipating device thereof.

The motor is used in industry and is widely used as a driving source. With the development of technology, the problem of heat dissipation of motors has become increasingly important. Especially in the direction of many equipment needs to reduce the space occupied, the problem of improving heat dissipation has become one of the industrial priorities.

In general, the heat conduction path of the motor can be referred to FIG. 1 , wherein FIG. 1 is a schematic cross-sectional view showing a perspective view of a conventional motor. As shown in Fig. 1, the heat conduction path of the conventional motor 1 is transmitted from the inside to the outside by the coil 11 and then transmitted to the motor casing 13 by the stator 12, and then the fan is blown to separate the tropics from the system. Among them, since there are contact faces between the various components of the motor, of course, with the contact thermal resistance, it hinders the efficiency of heat conduction to the outer casing, so that the internal coil temperature cannot be effectively reduced, thereby affecting the overall motor efficiency.

In some application scenarios, a schematic diagram of a conventional motor in conjunction with a fan to move the tropics away from the system can be referred to FIG. 2 and in conjunction with FIG. 1, wherein FIG. 2 is a cross-sectional view showing another view of the conventional motor. As shown in FIGS. 1 and 2, the heat dissipation design of the conventional motor 1 is usually such that the hood 21 and the fan 22 are mounted behind the conventional motor 1, and the motor casing 13 is blown or sucked, so that the tropical system can be removed from the system. However, in this way, not only the heat dissipation effect is not good, but also the hood 21 and the fan 22 occupy a large amount of space behind the conventional motor 1, so that the overall volume of the motor is increased, but the heat dissipation efficiency is not improved.

Therefore, how to develop a motor that can reduce the contact thermal resistance, effectively improve the efficiency of the fan, and reduce the installation space of the fan, and the applicable heat dissipating device are the problems that have yet to be solved.

The main object of the present invention is to provide a motor and a heat sink thereof that solve and ameliorate at least one of the problems and disadvantages of the foregoing prior art.

Another object of the present invention is to provide a motor and a heat dissipating device thereof. By the design of the motor without an external casing, the heat generated by the coil can be directly transmitted to the stator and dissipated by the hollowed-out area, and there is no motor casing common to the conventional motor. The contact thermal resistance between the stators effectively improves the heat transfer efficiency while reducing the material cost.

Another object of the present invention is to provide a motor and a heat dissipating device thereof. The main fan disposed on the air guiding main board can directly dissipate the hollow area through the introduction of the heat dissipating device, and the side fan disposed on the air guiding side plate can also directly face the stator. The side walls are cooled. In addition, since the structure makes the main fan and the side fan heat-dissipating air paths independent and isolated from each other, energy loss caused by the wind path phase can be avoided, and the fan use efficiency is further improved, and the overall heat dissipation area of the motor is increased.

In order to achieve the above object, a preferred embodiment of the present invention provides a motor including: a stator, a rotor, a plurality of heat sinks, and a heat sink, wherein the stator has a hollow portion, a coil portion, and a casing portion, wherein The housing portion has a first surface, a second surface and a plurality of side walls, the first surface and the second surface are respectively the front and rear surfaces of the stator; the hollow portion is penetrated through the housing portion and is located at the center of the housing portion, and the coil portion The ring is disposed in the hollow portion and between the inner side of the casing portion, and is in direct contact with the casing portion, and each radiator is respectively disposed on different side walls of the casing portion; the rotor has a rotating shaft disposed in the hollow portion; the heat dissipating device The air guiding hood and the plurality of first fans are disposed on the bottom of the motor by the bottom of the motor, the air guiding hood has a wind guiding main plate and a plurality of air guiding side plates, and the air guiding main plate is adjacent to the second surface, each guiding The wind side plates are vertically extended from the different sides of the air guiding main plate in the same direction, and each air guiding side plate is disposed corresponding to one of the plurality of heat sinks, and at least one air guiding side plate has at least one hole, and the number of the holes The same number of first fan, the first one for one fan is accommodated in the corresponding hole.

In order to achieve the above object, another preferred embodiment of the present invention provides a motor including: a stator, a rotor, and a heat sink. The stator has a hollow portion, a coil portion and a casing portion, the casing portion has a first surface, a second surface, a plurality of side walls and a plurality of hollowed out regions, the first surface and the second surface are respectively the front and rear surfaces of the stator; the hollow portion is a coil portion is disposed between the hollow portion and the inner portion of the housing portion and is in direct contact with the housing portion; the plurality of hollow regions are respectively formed on the first surface of the two adjacent sidewalls and a corner of the second surface, and each hollowed out region has a plurality of hollow perforations extending through the first surface and the second surface; the rotor includes a rotating shaft disposed in the hollow portion; the heat dissipating device includes an air guiding cover and a plurality of main fans, wherein the guiding portion The windshield is sleeved on the motor by the bottom of the motor, and the air guiding hood has a wind guiding main plate and a plurality of air guiding side plates, and each air guiding side plate is vertically extended from the different sides of the air guiding main plate in the same direction; The main board is adjacent to the second surface and has a plurality of openings, and the plurality of openings respectively correspond to the plurality of hollow areas; the number of main fans is the same as the number of openings, and each main fan is one-to-one Of the corresponding opening.

In order to achieve the above object, another preferred embodiment of the present invention provides a heat dissipating device, which is suitable for a motor having a certain stator, the stator has a plurality of hollow regions, and the heat dissipating device includes an air guiding hood and a plurality of main fans, and the air guiding device The cover comprises a wind guide main plate and a plurality of air guide side plates, each air guide side plate is vertically extended from the different sides of the air guide main plate in the same direction, and the wind guide main plate has a plurality of openings, and the plurality of open lines respectively correspond to the plurality of hollow areas And the number of the main fans is the same as the number of the openings, and each of the main fans is one-to-one accommodated in the corresponding opening.

Some exemplary embodiments embodying the features and advantages of the present invention are described in detail in the following description. It is to be understood that the present invention is capable of various modifications in various aspects, and is not to be construed as a limitation.

Please refer to FIG. 3, FIG. 4, FIG. 5, FIG. 6A, FIG. 6B and FIG. 7. FIG. 3 is a schematic structural view of the motor of the preferred embodiment of the present invention, and FIG. 4 shows the third Figure 7 is a cross-sectional view of the AA, Figure 5 is a schematic view showing the structure of the air hood of the preferred embodiment of the present invention, Figure 6A is a schematic view showing the front view of the stator of the motor of the present invention, and Figure 6B is a view showing the motor of the present case. A schematic view of the rear view of the stator and a schematic view of the motor shown in Fig. 3 are shown in Fig. 7. As shown in FIG. 3, FIG. 4, FIG. 5, FIG. 6A, FIG. 6B and FIG. 7, the motor 3 of the preferred embodiment of the present invention includes a stator 31, a rotor 32, and a heat sink 4.

The rotor 32 has a rotating shaft 322; the stator 31 has a hollow portion 310, a coil portion 311, and a casing portion 312. The housing portion 312 can be made of a silicon steel sheet, and the housing portion 312 has a first surface S1, a second surface S2, a solid region 3121, and a plurality of hollow regions 3120. The first surface S1 and the second surface S2 are respectively the front of the stator 31. The rear surface is parallel to each other, and the plurality of hollow regions 3120 can be four groups in the embodiment, and are respectively located at four corners of the housing portion 312; the hollow portion 310 is inserted through the housing portion 312 of the stator 31 and located at the housing portion. The center portion 312 of the 312, and the hollow portion 310 is provided with a rotor 32. The coil portion 11 is disposed inside the casing portion 312 and located between the rotor 32 and the casing portion 312. The coil portion 311 is in direct contact with the casing portion 312. To achieve direct heat transfer.

Please refer to Figure 6A and Figure 6B again with Figure 4. In some embodiments, the stator 31 of the motor 3 of the present invention has a first sidewall W1, a second sidewall W2, a third sidewall W3, and a fourth sidewall W4, a first sidewall W1, a second sidewall W2, a third sidewall W3, and a fourth The side wall W4 is perpendicular to the first surface S1 and the second surface S2, the first side wall W1 is parallel to the third side wall W3, and the second side wall W2 is parallel to the fourth side wall W4.

According to the concept of the present invention, the stator 31 may further include a plurality of heat sinks 313. In the present embodiment, one of the side walls of the housing portion 312 is considered as a placement surface when the motor 3 is placed, and therefore, only the housing portion 312 Three of the first side wall W1, the second side wall W2, the third side wall W3, and the fourth side wall W4 are provided with a heat sink 313, and the heat sinks 313 are provided by the three side walls to lift the heat from the coil portion 311 through the shell. The heat transfer efficiency of the body 312 to the heat sink 313.

According to the concept of the present invention, the heat sink 4 of the present invention includes an air hood 40, a plurality of side fans (hereinafter referred to as a first fan 44), and at least one main fan (hereinafter referred to as a second fan 42). The first fan 44 is disposed on the heat sink 313, and each of the heat sinks 313 is provided with at least one first fan 44. In the embodiment, two first fans 44 are disposed on each of the heat sinks 313; The fan 42 is disposed on the second surface S2 of the housing portion 312. In this embodiment, a second fan 42 is disposed respectively with respect to the hollowed out region 3120 of the four corners on the second surface S2, that is, in the second A total of four second fans 42 are disposed at four corner positions of the surface S2, so that the airflow generated by each of the second fans 42 can flow through the corresponding hollow area 3120, respectively; in other embodiments, the above four second fans Alternatively, a larger size fan may be used, and the above-described large size fan is disposed almost entirely on the second surface S2.

In the embodiment, the air guiding cover 40 includes a wind guiding main plate 41 and three air guiding side plates 43 extending perpendicularly from three side edges of the air guiding main plate 41. The air guiding cover 40 is connected to the bottom of the motor 3. (corresponding to the second surface S2 of the housing portion 312) is sleeved on the motor 3, and the air guiding main plate 41 of the air guiding cover 40 is disposed adjacent to the second surface S2 and has a plurality of openings 410, and the positions of the plurality of openings 410 respectively correspond to The plurality of second fans 42 and the plurality of hollow regions 3120. The number of the second fans 42 is the same as the number of the openings 410, and the plurality of second fans 42 are accommodated one by one in the plurality of openings 410.

Please refer to Fig. 8 and Fig. 5 and Fig. 6A, wherein Fig. 8 is a side view showing the motor mounting side fan shown in Fig. 3. As shown in FIG. 5, FIG. 6A, and FIG. 8, each of the air guiding side plates 43 of the air guiding cover 40 is provided corresponding to one of the heat sinks 413. In this embodiment, two of the three air guiding side plates 43 have at least one hole 430, and the number of each hole 430 is the same as that of the first fan 44, and the heat sink 413 is on the heat sink 413. Each of the first fans 44 is one-to-one accommodated in one of the holes 430 of the corresponding wind guide side plates 43. Preferably, each of the first fan 42 and each of the second fans 44 is an axial fan, but is not limited thereto.

According to the concept of the present case, the core technical feature of the present invention is to provide a motor in which the motor casing and the stator are stamped and formed, or a motor without a motor casing, which can greatly reduce the material cost due to the integrated structure and integrated manufacturing. In addition, the stator 31 and the heat sink 313 of the present invention may also be a single steel integrated structure, that is, the stator 31 and the heat sink 313 are integrally formed by stamping the same silicon steel sheet. Of course, the heat sink 313 can also be an external type, such as an aluminum extruded heat sink, wherein each heat sink 313 includes a plurality of heat sink fins, and a heat sink paste is applied to the contact surface of the heat sink 313 and the stator 31 to reduce contact. Thermal resistance, because the stator 31 itself is still a steel-integrated structure, its heat transfer effect may not be as complete as the above-mentioned one-piece shape, but it is still far superior to the conventional motor, which not only increases the overall heat dissipation area of the motor, but also effectively enhances the fan. Use efficiency and achieve better heat dissipation.

Please refer to Figures 6A and 6B again. In some embodiments, the hollow portion 3120 of the housing portion 312 of the stator 31 of the present invention is preferably formed at a corner of the adjacent first surface and the second surface adjacent to the first sidewall W1 and the second sidewall W2, respectively. a corner of the adjacent first surface and the second surface adjacent to the second sidewall W2 and the third sidewall W3, a corner of the adjacent first surface and the second surface adjacent to the third sidewall W3 and the fourth sidewall W4, and The fourth sidewall W4 and the adjacent first surface and the second surface of the first sidewall W1 are adjacent to the heat sink second fan 42 and the opening 410 on the air guiding main plate 41, respectively. Further, each of the hollowed out regions 3120 preferably has a plurality of hollowed through holes 3200, and each of the hollowed through holes 3200 extends through the first surface S1 and the second surface S2 of the casing portion 312. Thereby, a complete air path is formed, and the air flow is flown through the hollowed out area by four suction points of the second fan 42 in the direction in which the rotating shaft 322 extends in the four side walls of the housing portion 312 of the stator 31. Each of the slits 31200 of the 3120 is hollowed out to effectively dissipate the heat generated by the coil portion 311, whereby the heat transfer efficiency can be effectively improved.

On the other hand, referring to FIG. 8 and in conjunction with FIG. 4, the air path heat dissipating device of the first fan 44 is blown toward the heat sink 413, and then along the heat sink 413, and the first side wall W1 and the second side of the heat sink 413 are disposed. The side wall W2, the third side wall W3 or the fourth side wall W4 are blown laterally, and the air path and the air path flowing through the hollow area are independent and isolated from each other, and there is no mutual interference, that is, the wind path does not meet. And cause energy loss.

Please refer to FIG. 9 and FIG. 10 , wherein FIG. 9 is a schematic structural view showing a wind deflector according to another preferred embodiment of the present invention, and FIG. 10 is a view showing a motor change shown in FIG. A schematic cross-sectional view of the air hood. As shown in FIG. 9 and FIG. 10, the air guiding cover 50 of another preferred embodiment of the present invention includes a wind guiding main plate 51 and a plurality of air guiding side plates 53, which are combined with the wind guiding main plate 41 of the foregoing embodiment of FIG. It is similar to the air guiding side plate 43, and also has a plurality of openings 510, so it will not be described in detail. In this embodiment, the number of the air guiding side plates 53 is preferably three, and the three air guiding side plates 53 are respectively disposed corresponding to the first side wall W1, the second side wall W2, and the third side wall W3 of the stator 31, and Each of the air guiding side plates 53 has two holes 530. In addition, the first fan 54 is received in each of the holes 530, and the stator 31 effectively dissipates heat. As for the fourth side wall W4, which is mainly applied and disposed on a flat surface, the wind guide side plate is not disposed on the side, so that the motor of the present invention can be applied to a plurality of different products, and the product volume can be effectively reduced.

In summary, the present invention provides a motor and its suitable heat sink for solving and improving the problems and disadvantages of the prior art. In this case, the motor has no external casing design, the heat generated by the coil can be directly transmitted to the stator and dissipated by the hollowed-out area, which not only does not have the contact thermal resistance between the motor casing and the stator common to the conventional motor, and effectively improves the heat transfer efficiency. Reduce material costs. At the same time, through the introduction of the heat dissipating device, the main fan disposed on the air guiding main board can directly dissipate heat in the hollow area, and the side fan disposed on the air guiding side board can directly dissipate heat to the side wall of the stator. In addition, since the structure makes the main fan and the side fan heat-dissipating air paths independent and isolated from each other, energy loss caused by the wind path phase can be avoided, and the fan use efficiency is further improved, and the overall heat dissipation area of the motor is increased.

The present invention has been described in detail by the above-described embodiments, and may be modified by those skilled in the art, without departing from the scope of the appended claims.

1‧‧‧Used motor

11‧‧‧ coil

12‧‧‧ Stator

13‧‧‧Motor housing

21‧‧‧Wind cover

22‧‧‧Fan

3‧‧‧Motor

31‧‧‧ Stator

310‧‧‧ Hollow

311‧‧‧ coil department

312‧‧‧ Housing Department

3120‧‧‧ hollow area

3121‧‧‧solid area

31200‧‧‧ hollow piercing

313‧‧‧ radiator

32‧‧‧Rotor

322‧‧‧ shaft

4‧‧‧heating device

40‧‧‧wind hood

41‧‧‧Guide wind main board

410‧‧‧ openings

42‧‧‧second fan

43‧‧‧wind guide

430‧‧‧ hole

44‧‧‧First fan

50‧‧‧wind hood

51‧‧‧Guide wind main board

510‧‧‧ openings

53‧‧‧wind guide

530‧‧‧ holes

54‧‧‧First fan

S1‧‧‧ first surface

S2‧‧‧ second surface

W1‧‧‧ first side wall

W2‧‧‧ second side wall

W3‧‧‧ third side wall

W4‧‧‧ fourth side wall

Fig. 1 is a schematic cross-sectional view showing a perspective view of a conventional motor. Figure 2 is a schematic cross-sectional view showing another perspective of a conventional motor. Figure 3 is a schematic view showing the structure of the motor of the preferred embodiment of the present invention. Fig. 4 is a cross-sectional view taken along line A-A shown in Fig. 3. Figure 5 is a schematic view showing the structure of the air guiding hood of the preferred embodiment of the present invention. Fig. 6A is a schematic view showing a front view of the stator of the motor of the present invention. Fig. 6B is a schematic view showing a rear view of the stator of the motor of the present invention. Fig. 7 is a rear view showing the motor shown in Fig. 3. Fig. 8 is a side elevational view showing the motor-mounted side fan shown in Fig. 3. Figure 9 is a schematic view showing the structure of an air guiding hood according to another preferred embodiment of the present invention. Fig. 10 is a schematic cross-sectional view showing the air hood shown in Fig. 9 for the motor shown in Fig. 4.

Claims (14)

A motor comprising: a stator having a hollow portion, a coil portion and a casing portion, wherein the casing portion has a first surface, a second surface and a plurality of side walls, the first surface and the second surface The front and rear surfaces of the stator are respectively located in the center of the housing portion, and the coil portion is disposed between the hollow portion and the inner side of the housing portion, and the shell The body is in direct contact; the plurality of heat sinks are respectively disposed on different side walls of the casing portion; a rotor includes a rotating shaft, the rotor is disposed in the hollow portion; and a heat dissipating device includes: an air guiding cover The bottom of the motor is sleeved on the motor, and includes: a wind guide main plate adjacent to the second surface; and a plurality of air guiding side plates respectively extending from the different sides of the air guiding main plate in the same direction And each of the air guiding side plates is disposed corresponding to one of the plurality of heat sinks, and the at least one air guiding side plate has at least one hole; and at least one first fan, the number of the first fans is the same as the number of the holes And the first fan is disposed in one to one corresponding to the receiving of the hole. The motor of claim 1, wherein the plurality of side walls comprise a first side wall, a second side wall, a third side wall and a fourth side wall, wherein the first side wall, the second side wall, the first side The third sidewall and the fourth sidewall are perpendicular to the first surface and the second surface, the first sidewall is parallel to the third sidewall, and the second sidewall is parallel to the fourth sidewall. The motor of claim 2, wherein the heat sinks are respectively disposed on the first side wall and the third side wall that are parallel to each other. The motor of claim 2, wherein the heat sinks are respectively disposed on the first side wall, the second side wall, the third side wall, and the third side wall. The heat dissipation device is the motor of claim 2, wherein the housing portion further has a solid region and a plurality of hollow regions, and the plurality of hollow regions are respectively formed adjacent to the first sidewall and the second sidewall a surface and a corner of the second surface, a corner of the first surface and the second surface adjacent to the second sidewall and the third sidewall, and the first surface adjacent to the third sidewall and the fourth sidewall And a corner of the second surface and a corner of the first surface and the second surface adjacent to the fourth sidewall and the first sidewall, wherein each of the hollow regions has a plurality of hollow perforations, and each of the hollow perforations is through the a first surface and the second surface. The motor of claim 5, wherein the air guiding main plate further has at least one opening. The motor of claim 6, further comprising a second fan disposed on the second surface, the second fan having the same number as the opening, and the second fan pair One place is accommodated in the opening. The motor of claim 6, further comprising a plurality of second fans disposed on the second surface, the number of the second fans being the same as the number of the openings, and the second fan pair One location is accommodated in the opening, and the positions of the plurality of second fans respectively correspond to the plurality of hollowed out regions. The motor of claim 7 or 8, wherein the first fan and the second fan are an axial fan. The motor of claim 1, wherein each of the heat sinks comprises a plurality of heat sink fins. The motor of claim 1, wherein the stator and the heat sink are a single steel integrated structure. A motor comprising: a stator having a hollow portion, a coil portion and a casing portion, wherein the casing portion has a first surface, a second surface, a plurality of side walls and a plurality of hollow regions, the first surface and The second surface is respectively the front and rear surfaces of the stator; the hollow portion is located in the center of the housing portion through the housing portion, and the coil portion is disposed between the hollow portion and the inner side of the housing portion. And directly contacting the housing portion, the plurality of hollow regions are respectively formed on the first surface of the two adjacent sidewalls and a corner of the second surface, and each of the hollow regions has a plurality of the first surface and the second portion a hollow perforation of the surface; a rotor including a rotating shaft disposed in the hollow portion; and a heat dissipating device comprising: an air guiding cover disposed on the motor by the bottom of the motor, comprising: an air guiding The main board is adjacent to the second surface and has a plurality of openings, wherein the plurality of openings respectively correspond to the plurality of hollow regions; and the plurality of air guiding side plates are respectively from the different sides of the air guiding main plate to the same side Extending vertically; and a plurality of main fans, the number of the plurality of primary fan with the same number of the plurality of openings, and one of the plurality of the main fan is accommodated in the plurality of openings. The heat dissipating device is applicable to a motor having a certain one, the stator has a plurality of hollow regions, and the heat dissipating device comprises: an air guiding cover, comprising a wind guiding main plate and a plurality of air guiding side plates, wherein the air guiding main plate has a plurality of openings, and the air guiding device has a plurality of openings The plurality of open channels respectively correspond to the plurality of hollowed-out regions, wherein the air guiding side plates extend vertically from different sides of the air guiding main plate in the same direction; and the plurality of main fans have the same number of the plurality of main openings, and each of the plurality of openings The main fan is accommodated one by one in the corresponding opening. The heat dissipation device of claim 13, further comprising at least one side fan, wherein the at least one air guiding side plate has at least one hole, the number of the side fans is the same as the number of the holes, and the side fan One-to-one is accommodated in the corresponding hole.