Stator structure with efficient heat dissipation and air gap armature motor

Abstract

The invention relates to an efficient heat dissipation stator structure and an air gap armature motor, the stator structure comprises a stator support cylinder, a stator yoke assembly and a stator coil, the wall of the stator support cylinder is internally provided with a plurality of water inlet and outlet holes and a plurality of shunting holes which are parallel to the axis of the stator support cylinder; the plurality of water inlet and outlet holes and the plurality of flow dividing holes are uniformly arranged along the circumferential direction of the stator supporting cylinder, and any two adjacent water inlet and outlet holes and the plurality of flow dividing holes between the water inlet and outlet holes are sequentially communicated to form a snake-shaped flow channel; the stator yoke assembly is arranged on the stator supporting cylinder in the circumferential direction of the stator supporting cylinder. The stator coil is wound on the stator supporting cylinder and the stator yoke assembly; the multiple water inlet and outlet holes and the multiple flow dividing holes are formed in the wall of the stator supporting cylinder, any two adjacent water inlet and outlet holes are sequentially communicated with the multiple flow dividing holes between the water inlet and outlet holes, multiple S-shaped flow channels arranged around the stator supporting cylinder in the circumferential direction can be formed, the multiple S-shaped flow channels are all located in the stator structure, heat dissipation is uniform, and the cooling effect is good.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of motor cooling, in particular to a high-efficiency heat dissipation stator structure and air gap armature motor. BACKGROUND

[0002] The electric motor is a device for converting electrical energy into mechanical energy, which is prone to overheating during continuous operation. As the temperature of the motor continues to rise, the internal resistance of the motor will increase, at which time the efficiency of the electric motor will decrease sharply, therefore, the electric motor needs to be equipped with a heat dissipation cooling structure.

[0003] For example, the invention patent with application number CN202310284962.3 proposes a high-speed servo motor with stator cooling, wherein the cooling sleeve, the flow guide cavity, the cooling strip cavity, and the guide mechanism cooperate to facilitate the liquid cooling of the motor stator at two different flow rates, and to stably connect the motor stator and the cooling sleeve, thereby improving the connection strength between them, and facilitating multiple speed reduction of the cooling liquid from the flow guide cavity.

[0004] However, the above cooling pipeline is arranged outside the motor stator, and the heat dissipation inside and outside the stator is uneven, resulting in poor cooling effect. SUMMARY

[0005] Therefore, it is necessary to provide a high-efficiency heat dissipation stator structure and air gap armature motor to solve the problem of uneven heat dissipation inside and outside the stator caused by the cooling pipeline arranged outside the motor stator.

[0006] On the one hand, the present application provides a high-efficiency heat dissipation stator structure, comprising a stator support cylinder, a stator yoke assembly, and a stator coil, a plurality of water inlet and outlet holes and a plurality of shunt holes parallel to the axis of the stator support cylinder are formed in the wall of the stator support cylinder, the plurality of water inlet and outlet holes and the plurality of shunt holes are uniformly arranged along the circumference of the stator support cylinder, and any two adjacent water inlet and outlet holes and the plurality of shunt holes therebetween are sequentially connected to form a serpentine flow channel; the stator yoke assembly is arranged on the stator support cylinder along the circumference of the stator support cylinder; and the stator coil is arranged around the stator support cylinder and the stator yoke assembly.

[0007] Further, a plurality of shunt cavities and a plurality of first series cavities are formed on one side of the stator support cylinder, a plurality of second series cavities are formed on the other side of the stator support cylinder, one end of each of the adjacent two shunt holes is connected through the second series cavities, one end of part of the adjacent two shunt holes is connected through the first series cavities, and the other end of the remaining adjacent two shunt holes is connected through the shunt cavities and the water inlet and outlet holes located therebetween.

[0008] Furthermore, a plurality of diverter grooves are provided on the annular end surface of the stator support tube, and the plurality of diverter grooves are evenly arranged along the circumference of the stator support tube. The plurality of diverter grooves correspond one-to-one to and are connected with the plurality of water inlet and outlet holes. Each of the diverter grooves is also connected with two of the diverter holes adjacent to the corresponding water inlet and outlet holes. The stator support tube also includes a plurality of first blocking blocks, and the plurality of first blocking blocks are respectively embedded in the plurality of diverter grooves, and the diverter cavity is formed between the plurality of first blocking blocks and the plurality of diverter grooves.

[0009] Furthermore, a plurality of first series grooves are provided on the annular end surface of the stator support tube, and the plurality of first series grooves are evenly arranged along the circumference of the stator support tube, and each of the first series grooves is connected to two adjacent diversion holes. The stator support tube also includes a plurality of second blocking blocks, and the plurality of second blocking blocks are respectively embedded in the plurality of first series grooves, and a first series cavity is formed between the plurality of second blocking blocks and the plurality of first series grooves.

[0010] Furthermore, a plurality of second series grooves are provided on the side wall of the stator support tube, and the plurality of second series grooves are evenly arranged along the circumference of the stator support tube, and each of the second series grooves is connected to two adjacent diversion holes. The stator support tube also includes a plurality of third blocking blocks, and the plurality of third blocking blocks are respectively embedded in the plurality of second series grooves, and a second series cavity is formed between the plurality of third blocking blocks and the plurality of second series grooves.

[0011] Furthermore, it also includes multiple water inlet joints and multiple water outlet joints, and the multiple water inlet and outlet holes are all through holes. The ends of the multiple water inlet and outlet holes away from the diversion groove are respectively connected to the multiple water inlet joints and multiple water outlet joints, and the multiple water inlet joints and the multiple water outlet joints are staggered along the circumference of the stator support tube.

[0012] Furthermore, the plurality of diversion holes are all blind holes, and two adjacent second series cavities are connected via the first series cavity.

[0013] On the other hand, the present invention provides an air-gap armature motor, comprising the stator structure with efficient heat dissipation as described above, and also comprising a housing and a rotor, wherein the stator structure is fixedly arranged in the housing, and the rotor is built into the stator structure and rotatably connected to the housing.

[0014] Furthermore, the housing includes a fixed cylinder and two support arms, both sides of the fixed cylinder are respectively connected to the two support arms, the stator structure is fixedly disposed in the fixed cylinder, and the rotor is rotatably connected to the support arms.

[0015] Furthermore, the housing also includes a wiring tray, one side of which is fixedly connected to one of the support arms, and the other side of which is fixedly connected to the stator support tube. The wiring tray is provided with a plurality of wire inlet and outlet holes evenly arranged along its circumference, and the plurality of stator coils are respectively arranged through the plurality of wire inlet and outlet holes.

[0016] Compared with the prior art, by opening multiple water inlet and outlet holes and multiple diversion holes in the wall of the stator support tube, and making any two adjacent water inlet and outlet holes and the multiple diversion holes therebetween connected in sequence, a plurality of serpentine flow channels arranged circumferentially around the stator support tube can be formed, which can effectively cover the entire stator structure, and the multiple serpentine flow channels are all located inside the stator structure, with uniform heat dissipation and good cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the overall structure of a stator structure with high heat dissipation provided by an embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the end face of the middle stator support cylinder; Figure 3 for Figure 2 A magnified schematic diagram of part A in the middle; Figure 4 for Figure 2 A magnified schematic diagram of part B in the middle; Figure 5 for Figure 2 A schematic diagram of the arrangement of multiple first blocking blocks and multiple second blocking blocks; Figure 6 for Figure 1 Schematic diagram of the arrangement of multiple third blocks; Figure 7 for Figure 6 Enlarged schematic diagram of the middle C part; Figure 8 A schematic diagram of the overall structure of an air-gap armature motor provided by an embodiment of the present invention; Figure 9 for Figure 8 Schematic diagram of the layout of the central wiring panel. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, and are not used to limit the scope of the present invention.

[0019] like Figure 1-3As shown, on the one hand, an embodiment of the present invention provides a stator structure with efficient heat dissipation, including a stator support tube 100, a stator yoke assembly 200 and a stator coil 300. A plurality of water inlet and outlet holes 10a and a plurality of diversion holes 10b parallel to the axis of the stator support tube 100 are opened in the wall of the stator support tube 100. The plurality of water inlet and outlet holes 10a and the plurality of diversion holes 10b are uniformly arranged along the circumference of the stator support tube 100, and any two adjacent water inlet and outlet holes 10a and the plurality of diversion holes 10b therebetween are connected in sequence to form a serpentine flow channel; the stator yoke assembly 200 is arranged on the stator support tube 100 along the circumference of the stator support tube 100; the stator coil 300 is wound around the stator support tube 100 and the stator yoke assembly 200.

[0020] During implementation, by opening multiple water inlet and outlet holes 10a and multiple diversion holes 10b in the wall of the stator support tube 100, and connecting any two adjacent water inlet and outlet holes 10a and the multiple diversion holes 10b therebetween in sequence, a plurality of serpentine flow channels arranged circumferentially around the stator support tube 100 can be formed, which can effectively cover the entire stator structure, and the multiple serpentine flow channels are all located inside the stator structure, with uniform heat dissipation and good cooling effect.

[0021] The stator support tube 100 in this embodiment has a plurality of water inlet and outlet holes 10a and a plurality of diversion holes 10b parallel to the axis of the stator support tube 100 opened in its wall. The plurality of water inlet and outlet holes 10a and the plurality of diversion holes 10b are evenly arranged along the circumference of the stator support tube 100. Any two adjacent water inlet and outlet holes 10a and the plurality of diversion holes 10b therebetween are connected in sequence to form a serpentine flow channel.

[0022] In order to facilitate the formation of the above-mentioned serpentine flow channel, that is, connecting multiple water inlet and outlet holes 10a and multiple diversion holes 10b, in one embodiment, multiple diversion chambers and multiple first series chambers are formed on one side of the stator support tube 100, and multiple second series chambers are formed on the other side of the stator support tube 100. One end of each adjacent diversion hole 10b is connected via the second series chamber, the other ends of some adjacent two diversion holes 10b are connected via the first series chamber, and the other ends of the remaining two adjacent diversion holes 10b are connected to the water inlet and outlet hole 10a located therebetween via the diversion chamber.

[0023] like Figure 3-5As shown, the water inlet and outlet holes 10a are used to introduce the cooling medium into the serpentine flow channel, or to drain the water in the serpentine flow channel. To this end, a plurality of diversion cavities are provided to connect the diversion holes 10b adjacent to the water inlet and outlet holes 10a. To form the above-mentioned diversion holes 10b, in this embodiment, a plurality of diversion grooves 10c are opened on the annular end surface of the stator support tube 100. The plurality of diversion grooves 10c are evenly arranged along the circumference of the stator support tube 100. The plurality of diversion grooves 10c correspond to and are connected to the plurality of water inlet and outlet holes 10a one by one. Each diversion groove 10c is also connected to two diversion holes 10b adjacent to the corresponding water inlet and outlet holes 10a. The stator support tube 100 also includes a plurality of first blocking blocks 110. The plurality of first blocking blocks 110 are respectively embedded in the plurality of diversion grooves 10c, and diversion cavities are formed between the plurality of first blocking blocks 110 and the plurality of diversion grooves 10c.

[0024] It is understood that to reduce the number of water inlet and outlet sources, the number of diverter holes 10b is typically greater than the number of water inlet and outlet holes 10a. A first serial cavity connects one end of two adjacent diverter holes 10b, while a second serial cavity connects the other ends of two adjacent diverter holes 10b. It should be noted that one end of each diverter hole 10b connects to the adjacent diverter hole 10b in the clockwise direction via the first serial cavity, and the other end of each diverter hole 10b connects to the adjacent diverter hole 10b in the counterclockwise direction via the second serial cavity, thereby forming the aforementioned serpentine flow channel.

[0025] In order to form the above-mentioned first series cavity, in this embodiment, a plurality of first series grooves 10d are opened on the annular end surface of the stator support tube 100, and the plurality of first series grooves 10d are evenly arranged along the circumference of the stator support tube 100. Each first series groove 10d is connected to two adjacent diversion holes 10b. The stator support tube 100 also includes a plurality of second blocking blocks 120, and the plurality of second blocking blocks 120 are respectively embedded in the plurality of first series grooves 10d, and a first series cavity is formed between the plurality of second blocking blocks 120 and the plurality of first series grooves 10d.

[0026] To define the first and second blocking blocks 110, 120, this embodiment further includes an end cap 400 that is detachably connected to the annular end surface of the stator support tube 100. Multiple first and second blocking blocks 110, 120 abut against the end cap 400. The end cap 400 can be connected to the stator support tube 100 using screws or other fasteners.

[0027] like Figure 6-7As shown, in order to form the above-mentioned second series cavity, in this embodiment, a plurality of second series grooves 10e are opened on the side wall of the stator support tube 100, and the plurality of second series grooves 10e are uniformly arranged along the circumference of the stator support tube 100. Each second series groove 10e is connected to two adjacent diversion holes 10b. The stator support tube 100 also includes a plurality of third blocking blocks 130, and the plurality of third blocking blocks 130 are respectively embedded in the plurality of second series grooves 10e, and a second series cavity is formed between the plurality of third blocking blocks 130 and the plurality of second series grooves 10e.

[0028] By opening a second series groove 10e on the outer wall of the stator support tube 100, processing of the other end face of the stator support tube 100 can be avoided. Specifically, one end face of the stator support tube 100 is processed to form a diverter groove 10c and a first series groove 10d, and the other end face of the stator support tube 100 is not processed, that is, it is a non-processed surface, so that the motor housing 500 and the stator support tube 100 can be integrally formed, avoiding secondary connection (such as welding, bolt connection, etc.) between the housing 500 and the stator support tube 100, thereby ensuring the coaxiality of the stator support tube 100 relative to the housing 500.

[0029] It can be understood that the shapes of the first blocking block 110 , the second blocking block 120 and the third blocking block 130 in this embodiment are not limited, and they may be strip, square, circular, etc.

[0030] At the same time, the number of serpentine flow channels must be able to divide the number of poles so that the water channels are evenly distributed along the circumference. The number of slot openings in each serpentine flow channel is proportional to the number of poles. Multiple diversion holes in each serpentine flow channel are connected in series. Under one pole, an odd number of holes (including through holes and blind holes) need to be set so that one inlet and outlet can supply water to two serpentine flow channels. The inlet and outlet supply water to both sides at the opening end, and its flow rate is twice that of the general series pipeline.

[0031] This embodiment also includes multiple water inlet joints 140 and multiple water outlet joints 150. The multiple water inlet and outlet holes 10a are all through holes. The ends of the multiple water inlet and outlet holes 10a away from the diversion groove 10c are respectively connected to the multiple water inlet joints 140 and the multiple water outlet joints 150. The multiple water inlet joints 140 and the multiple water outlet joints 150 are staggered along the circumference of the stator support tube 100, and two adjacent serpentine flow channels share one water inlet joint or water outlet joint.

[0032] In one embodiment, the plurality of diversion holes 10b are all blind holes, and two adjacent second series cavities are connected via the first series cavity.

[0033] The stator yoke assembly 200 in this embodiment is arranged on the stator support cylinder 100 along the circumference of the stator support cylinder 100. The stator yoke assembly 200 includes a plurality of outer stator yokes 210 and a plurality of inner stator yokes 220. The outer stator yokes 210 are arranged on the outer wall of the stator support cylinder 100 along the circumference thereof, and the inner stator yokes 220 are arranged on the inner wall of the stator support cylinder 100 along the circumference thereof.

[0034] The stator coil 300 in this embodiment includes a plurality of coil units, which are evenly arranged along the circumference of the stator support cylinder 100 , and each coil unit is disposed around the outer stator yoke 210 and the inner stator yoke 220 .

[0035] It is understandable that the stator yoke assembly 200 and the stator coil 300 assembly are structures that can be imagined by those skilled in the art, and no further explanation or description is given for this.

[0036] Temperature-controlled cooling water can be introduced into the water inlet joint 140 through equipment such as a water pump and a refrigerator. The cooling water flows into the diversion groove 10c through the water inlet and outlet holes 10a, and is diverted to two adjacent diversion holes 10b. The cooling water passes through multiple first series grooves 10d and multiple second series grooves 10e, and the cooling water on both sides finally flows out from two adjacent water outlet joints 150, thereby achieving effective heat dissipation of the stator.

[0037] like Figure 8 As shown, on the other hand, an embodiment of the present invention provides an air-gap armature motor, including the stator structure with efficient heat dissipation as described above, and also including a housing 500 and a rotor, the stator structure is fixedly arranged in the housing 500, and the rotor is built into the stator structure and is rotatably connected to the housing 500.

[0038] In one embodiment, the housing 500 includes a fixed cylinder 510 and two arms 520 . Both sides of the fixed cylinder 510 are connected to the two arms 520 , respectively. The stator structure is fixedly disposed in the fixed cylinder 510 , and the rotor is rotatably connected to the arms 520 .

[0039] like Figure 9 As shown, in one embodiment, the housing 500 further includes a wiring tray 530, one side of which is fixedly connected to one of the arms 520, and the other side of the wiring tray 530 is fixedly connected to the stator support tube 100, and the wiring tray 530 is provided with a plurality of wire entry and exit holes 53a evenly arranged along its circumference, and a plurality of stator coils 300 are respectively arranged through the plurality of wire entry and exit holes 53a.

[0040] The connection plate 530 cooperates with the end cover 400 to achieve axial fixing of the stator yoke assembly 200 and the stator coil 300 .

[0041] Compared with the prior art, the multiple water inlet and outlet holes 10a and the multiple diversion holes 10b are arranged in the wall of the stator support cylinder 100, and any two adjacent water inlet and outlet holes 10a and the multiple diversion holes 10b therebetween are sequentially communicated, so that multiple serpentine flow channels arranged in the circumferential direction of the stator support cylinder 100 can be formed, the entire stator structure can be effectively covered, and the multiple serpentine flow channels are all located in the interior of the stator structure, heat is evenly dissipated, and the cooling and cooling effect is good.

[0042] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any change or replacement that can be easily thought of by those skilled in the art within the technical range disclosed by the present application should be covered within the protection scope of the present application.

Claims

1. A stator structure with high heat dissipation efficiency, characterized in that: include: The stator support tube has a plurality of water inlet and outlet holes and a plurality of diversion holes parallel to the axis of the stator support tube opened in its wall, the plurality of water inlet and outlet holes and the plurality of diversion holes are evenly arranged along the circumference of the stator support tube, and any two adjacent water inlet and outlet holes and the plurality of diversion holes therebetween are sequentially connected to form a serpentine flow channel; a stator yoke assembly, which is arranged on the stator support cylinder along the circumference of the stator support cylinder; The stator coil is wound around the stator support cylinder and the stator yoke assembly.

2. The stator structure with high heat dissipation efficiency according to claim 1, characterized in that: A plurality of diversion cavities and a plurality of first series cavities are formed on one side of the stator support tube, and a plurality of second series cavities are formed on the other side of the stator support tube. One end of two adjacent diversion holes are connected via the second series cavity, the other ends of some adjacent two diversion holes are connected via the first series cavity, and the other ends of the remaining two adjacent diversion holes are connected to the water inlet and outlet holes located therebetween via the diversion cavity.

3. The stator structure with high heat dissipation efficiency according to claim 2, characterized in that: A plurality of diversion grooves are provided on the annular end surface of the stator support tube, and the plurality of diversion grooves are evenly arranged along the circumference of the stator support tube. The plurality of diversion grooves correspond to and are connected with the plurality of water inlet and outlet holes one by one, and each of the diversion grooves is also connected with two diversion holes adjacent to the corresponding water inlet and outlet holes. The stator support tube also includes a plurality of first blocking blocks, and the plurality of first blocking blocks are respectively embedded in the plurality of diversion grooves, and the diversion cavity is formed between the plurality of first blocking blocks and the plurality of diversion grooves.

4. The stator structure with high heat dissipation efficiency according to claim 3, characterized in that: A plurality of first series grooves are provided on the annular end surface of the stator support tube, and the plurality of first series grooves are evenly arranged along the circumference of the stator support tube. Each of the first series grooves is connected to two adjacent diversion holes. The stator support tube also includes a plurality of second blocking blocks, and the plurality of second blocking blocks are respectively embedded in the plurality of first series grooves, and a first series cavity is formed between the plurality of second blocking blocks and the plurality of first series grooves.

5. The stator structure with high heat dissipation efficiency according to claim 4, characterized in that: A plurality of second series grooves are provided on the side wall of the stator support tube, and the plurality of second series grooves are evenly arranged along the circumference of the stator support tube. Each of the second series grooves is connected to two adjacent diversion holes. The stator support tube also includes a plurality of third blocking blocks, and the plurality of third blocking blocks are respectively embedded in the plurality of second series grooves, and a second series cavity is formed between the plurality of third blocking blocks and the plurality of second series grooves.

6. The stator structure with high heat dissipation efficiency according to claim 5, characterized in that: It also includes multiple water inlet joints and multiple water outlet joints, and the multiple water inlet and outlet holes are all through holes. The ends of the multiple water inlet and outlet holes away from the diversion groove are respectively connected to the multiple water inlet joints and multiple water outlet joints, and the multiple water inlet joints and the multiple water outlet joints are staggered along the circumference of the stator support tube.

7. The stator structure with high heat dissipation efficiency according to claim 5, characterized in that: The plurality of diversion holes are all blind holes, and two adjacent second series cavities are connected via the first series cavity.

8. An air-gap armature motor, characterized in that: It comprises the stator structure with high efficiency heat dissipation as described in any one of claims 1 to 7, and also comprises a shell and a rotor, wherein the stator structure is fixedly arranged in the shell, and the rotor is built into the stator structure and rotatably connected to the shell.

9. The air-gap armature motor according to claim 8, characterized in that The housing includes a fixed cylinder and two supporting arms. Both sides of the fixed cylinder are respectively connected to the two supporting arms. The stator structure is fixedly arranged in the fixed cylinder, and the rotor is rotatably connected to the supporting arms.

10. The air-gap armature motor according to claim 9, characterized in that The housing also includes a wiring tray, one side of which is fixedly connected to one of the support arms, and the other side of which is fixedly connected to the stator support tube. The wiring tray is provided with a plurality of wire inlet and outlet holes evenly arranged along its circumference, and the plurality of stator coils are respectively arranged through the plurality of wire inlet and outlet holes.

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