CN218678665U - Electric machine - Google Patents
Electric machine Download PDFInfo
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- CN218678665U CN218678665U CN202222888111.3U CN202222888111U CN218678665U CN 218678665 U CN218678665 U CN 218678665U CN 202222888111 U CN202222888111 U CN 202222888111U CN 218678665 U CN218678665 U CN 218678665U
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Abstract
The utility model provides a motor, which comprises a shell, a motor shaft, an iron core assembly and an air deflector, wherein two air ports are arranged at the periphery of the shell along the axial direction of the shell at intervals; the motor shaft is rotatably connected with the shell and is coaxially arranged; the iron core assembly is sleeved on the motor shaft, a second channel is formed between the outer peripheral surface of the iron core assembly and the shell, a first channel is formed between the inner peripheral surface of the iron core assembly and the motor shaft, and a third channel for communicating the first channel with the second channel is further arranged on the iron core assembly; the air deflector is detachably connected to one of the air openings, the inner circumference of the air deflector is abutted against the iron core assembly, and the outer circumference of the air deflector is abutted against the shell. The motor provided by the utility model switches the flowing direction of the air flow in the motor by replacing the installation position of the air deflector, thereby adapting to the diversified demands of the market; when the air current circulates, the air current respectively flows through the rotor and the stator, and the heat dissipation efficiency is improved.
Description
Technical Field
The utility model belongs to the technical field of the machine-building, concretely relates to motor.
Background
Along with the development of motor lightweight design, the requirement on the volume of the motor is smaller and smaller, and the requirement on the power density of the motor is larger and larger. For the working condition that the requirement on the protection level of the motor is low, the motor with an open structure is selected according to actual requirements, so that the size of the motor can be greatly reduced, and the power density of the motor is obviously improved. The motor of the open structure is widely used in various apparatuses. In the case of the motor having an open structure, the volume of the motor is reduced, the power density is increased, and thus the motor is required to perform more efficient heat dissipation, and thus the design of the air path structure inside the motor is particularly important. At present, most motors are in a single one-way design, namely, an air path structure (transmission shaft air inlet and shell air outlet) with a single wind direction is formed on a shell of the motor through welding or casting, and the single structure limits the universality of the shell of the motor and cannot meet diversified demands of the market; and the wind path structure radiating effect of single wind direction is relatively poor, reduces the life of motor.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a motor aims at solving in the current motor wind path wind direction single radiating effect poor, and restricts the technical problem of the commonality of casing.
In order to achieve the above object, the utility model adopts the following technical scheme: provided is an electric motor including:
the outer periphery of the shell is provided with two air ports at intervals along the axial direction of the shell;
the motor shaft is rotatably connected with the shell and is coaxially arranged;
the iron core assembly is sleeved on the motor shaft, a second channel is formed between the outer peripheral surface of the iron core assembly and the shell, a first channel is formed between the inner peripheral surface of the iron core assembly and the motor shaft, and a third channel for communicating the first channel with the second channel is further arranged on the iron core assembly; and
the air deflector is detachably connected to one of the air ports, the inner periphery of the air deflector is abutted against the iron core assembly, and the outer periphery of the air deflector is abutted against the shell;
and the air deflector, the end surface of the iron core and the inner end surface of the shell are enclosed to form a fourth channel which is communicated with one air opening and the first channel, and the second channel is communicated with the other air opening.
In a possible implementation manner, a first longitudinal rib is formed on the inner periphery of the outer shell in a protruding mode, and the inner peripheral surface of the first longitudinal rib abuts against the iron core assembly.
In a possible implementation manner, the first longitudinal ribs are uniformly arranged in a plurality around the axial direction of the housing, and the second channel is formed by enclosing the adjacent first longitudinal ribs, the outer peripheral surface of the iron core assembly and the inner peripheral surface of the housing.
In one possible implementation, the air deflection panel includes:
one end of the connecting sleeve is butted with the end surface of the iron core assembly, the other end of the connecting sleeve is butted with the inner end surface of the shell, and an opening corresponding to one air port is formed in the connecting sleeve;
the two second plate bodies are respectively arranged on two opposite sides of the opening, and the second plate bodies are attached to the first longitudinal ribs and detachably connected with the first longitudinal ribs; and
the first plate body is connected between the two second plate bodies, the outer periphery of the first plate body is abutted to the shell, and the inner periphery of the first plate body is abutted to the iron core assembly.
In a possible implementation manner, the outer periphery of the connecting sleeve abuts against the inner periphery of the first longitudinal rib, and a threaded connecting piece matched with the first longitudinal rib is arranged on the connecting sleeve.
In a possible implementation manner, a second longitudinal rib is convexly arranged on the outer periphery of the motor shaft, and the outer periphery of the second longitudinal rib abuts against the inner periphery of the iron core assembly.
In a possible implementation manner, two limiting steps are arranged on the motor shaft at intervals along the axial direction of the motor shaft, the second longitudinal rib is located between the two limiting steps, and the outer diameter of the second longitudinal rib is larger than the diameter of one of the limiting steps and smaller than the diameter of the other limiting step.
In a possible implementation manner, the second longitudinal ribs are uniformly arranged in a plurality of numbers around the axial direction of the motor shaft, and the first channel is formed by enclosing the adjacent second longitudinal ribs, the iron core assembly and the outer peripheral surface of the motor shaft.
In a possible implementation manner, the iron core assembly includes a stator and a rotor that are coaxially arranged, the rotor is sleeved on the motor shaft, the stator is sleeved on the periphery of the rotor and fixed to the housing, an air gap is formed between the stator and the rotor, and the third channel sequentially penetrates through the stator and the rotor along the radial direction of the motor shaft.
In a possible implementation manner, the stator and the rotor respectively include a plurality of iron core monomers arranged at intervals in the axial direction of the motor shaft, a spacer is arranged between every two adjacent iron core monomers, and the third channel is formed between every two adjacent iron core monomers.
Compared with the prior art, in the working process of the motor, the rotor in the iron core assembly rotates along with the motor shaft, the stator in the iron core assembly is fixed together with the shell, and in the working process, airflow enters the shell from the air port provided with the air deflector, sequentially enters the first channel, the third channel and the second channel, and exits from the other air port to complete an internal circulation; when the wind direction of the motor needs to be changed, the air deflector is detached and changed to another air port. The motor in the utility model is provided with two air ports on the shell, and a detachable air deflector is arranged on one air port, and the flow direction of the air flow in the motor is switched by changing the installation position of the air deflector, so that the diversified demands of the market are met; when the air current circulates, the air current flows through the rotor and the stator respectively, and the heat dissipation efficiency is improved.
Drawings
Fig. 1 is a schematic front view of a motor according to an embodiment of the present invention;
FIG. 2 isbase:Sub>A schematic cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic cross-sectional view taken along line B-B of FIG. 1;
fig. 4 is a schematic perspective view of a housing according to an embodiment of the present invention;
fig. 5 is a schematic perspective view of an air deflector according to an embodiment of the present invention;
fig. 6 is an assembly diagram of an iron core assembly and a motor shaft according to an embodiment of the present invention;
fig. 7 is a schematic view of an air path of a motor according to a first embodiment of the present invention;
fig. 8 is a schematic view of an air path of a motor according to a second embodiment of the present invention.
Description of reference numerals:
10-a housing; 11-tuyere; 12-a first channel; 13-a second channel; 14-a first longitudinal rib;
20-motor shaft; 21-a limit step; 22-second longitudinal ribs;
30-an iron core assembly; 31-a third channel; 32-a fourth channel; 34-a stator; 35-a rotor; 36-iron core monomer; 37-spacer bars;
40-a wind deflector; 41-connecting sleeves; 42-a second plate body; 43-a first plate body; 44-threaded connection.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 8, a motor according to the present invention will be described. The motor comprises a shell 10, a motor shaft 20, an iron core assembly 30 and an air deflector 40, wherein two air ports 11 are formed in the periphery of the shell 10 at intervals along the axial direction of the shell; the motor shaft 20 is rotatably connected with the shell 10 and is coaxially arranged; the iron core assembly 30 is sleeved on the motor shaft 20, a second channel 13 is formed between the outer peripheral surface of the iron core assembly 30 and the housing 10, a first channel 12 is formed between the inner peripheral surface of the iron core assembly 30 and the motor shaft 20, and a third channel 31 for communicating the first channel 12 and the second channel 13 is further arranged on the iron core assembly 30; the air deflector 40 is detachably connected to one of the air ports 11, the inner periphery of the air deflector 40 abuts against the iron core assembly 30, and the outer periphery abuts against the shell 10; the air deflector 40, the end surface of the iron core and the inner end surface of the shell 10 are enclosed to form a fourth channel 32 which is communicated with one air port 11 and the first channel 12, and the second channel 13 is communicated with the other air port 11.
Note that, the core assembly 30 includes a stator 34 and a rotor 35; the housing 10 includes a casing and end caps respectively disposed at opposite ends of the casing, where an end face of the end cap is an end face of the housing 10.
Compared with the prior art, in the motor provided by the embodiment, in the working process of the motor, the rotor 35 in the iron core assembly 30 rotates along with the motor shaft 20, the stator 34 in the iron core assembly 30 is fixed together with the housing 10, and in the working process, airflow enters the housing 10 from the air port 11 provided with the air deflector 40, sequentially enters the first channel 12, the third channel 31 and the second channel 13, and exits from the other air port 11 to complete an internal circulation; when the wind direction of the motor needs to be changed, the air deflector 40 is detached and changed to another tuyere 11. The motor in the utility model is adapted to the diversified demands of the market by arranging two air ports 11 on the shell 10, installing the detachable air deflector 40 on one of the air ports 11, and changing the installation position of the air deflector 40 to switch the flowing direction of the air flow in the motor; when the air current circulates, the air current respectively flows through the rotor 35 and the stator 34, and the heat dissipation efficiency is improved.
In some embodiments, a specific embodiment of the housing 10 described above may be configured as shown in fig. 2-4. Referring to fig. 2 to 4, a first longitudinal rib 14 is formed on the inner circumference of the housing 10 in a protruding manner, and the inner circumference of the first longitudinal rib 14 abuts against the iron core assembly 30. Through setting up first vertical rib 14 for form the interval after the installation of iron core assembly 30 and shell 10, and then form second passageway 13, satisfy the location installation to iron core assembly 30.
It should be noted that the extending direction of the first longitudinal rib 14 is parallel to the axial direction of the housing 10.
In some embodiments, a modified embodiment of the first longitudinal rib 14 may be configured as shown in fig. 2 to 4. Referring to fig. 2 to 4, a plurality of first longitudinal ribs 14 are uniformly arranged around the axial direction of the housing 10, and the second channels 13 are defined by the adjacent first longitudinal ribs 14, the outer peripheral surface of the core assembly 30 and the inner peripheral surface of the housing 10. The uniform arrangement of the first longitudinal ribs 14 can realize uniform support at the periphery of the iron core assembly 30 after the iron core assembly 30 is installed, the stability of the iron core assembly 30 is improved, and the noise of the working process of the motor is reduced.
In some embodiments, one embodiment of the air guiding plate 40 may be configured as shown in fig. 3 and 5. Referring to fig. 3 and 5, the air deflector 40 includes a connecting sleeve 41, two second plate bodies 42 and a first plate body 43, one end of the connecting sleeve 41 is butted with the end surface of the iron core assembly 30, the other end is butted with the inner end surface of the housing 10, and the connecting sleeve 41 is provided with an opening corresponding to one of the air ports 11; the two second plate bodies 42 are respectively arranged at two opposite sides of the opening, and the second plate bodies 42 are attached to the first longitudinal rib 14 and detachably connected with the first longitudinal rib 14; the first plate 43 is connected between the two second plates 42, and the outer circumference of the first plate 43 abuts against the housing 10 and the inner circumference abuts against the core assembly 30. Two second plate bodies 42 and a first plate body 43 are connected between the air port 11 and the opening, so that the air is guided to the first channel 12; the connecting sleeve 41 assists in mounting the first plate 43 and the second plate 42, and because the connecting sleeve 41 is butted between the end surfaces of the iron core assembly 30 and the housing 10, the air flow is prevented from directly entering the second channel 13, the structural strength of the first plate 43 and the second plate 42 is improved, and the air flow is prevented from being displaced and damaged greatly.
It should be noted that one end of the connecting sleeve 41 is connected to the end face of the iron core assembly 30, and the other end is connected to the end cover on the housing 10.
As a modified embodiment of the air deflector 40, the air deflector 40 may be an annular plate, and the plate surface is perpendicular to the axial direction of the motor shaft 20, the projection position of the air opening 11 is located between the air deflector 40 and the end surface of the housing 10 (the end adjacent to the air deflector 40), the air deflector 40 is sleeved on the outer periphery of the end portion of the iron core assembly 30, and the outer periphery abuts against the inner peripheral surface of the housing 10, and an avoiding groove corresponding to the first longitudinal rib 14 is provided on the air deflector 40, so as to block the air flow entering from the air opening 11 from entering the second channel 13.
In some embodiments, a modified embodiment of the connecting sleeve 41 can adopt a structure as shown in fig. 3 and 5. Referring to fig. 3 and 5, the outer circumference of the connecting sleeve 41 abuts against the inner circumference of the first longitudinal rib 14, and the connecting sleeve 41 is provided with a threaded connector 44 which is matched with the first longitudinal rib 14. After the connecting sleeve 41 is installed, the threaded connecting piece 44 is arranged at the position corresponding to the longitudinal rib, so that the fixing stability of the connecting sleeve 41 is improved, and the air deflector 40 is prevented from being displaced and damaged due to large airflow.
In some embodiments, a modified embodiment of the motor shaft 20 may be configured as shown in fig. 2 and 6. Referring to fig. 2 and 6, a second longitudinal rib 22 protrudes from an outer periphery of the motor shaft 20, and an outer periphery of the second longitudinal rib 22 abuts against an inner periphery of the core assembly 30. Through setting up second and indulge muscle 22 for form the interval between iron core assembly 30 and the motor shaft 20 after the installation, and then form first passageway 12, satisfy the location installation to iron core assembly 30.
It should be noted that the extending direction of the second longitudinal rib 22 is parallel to the axial direction of the motor shaft 20.
In some embodiments, a modified embodiment of the motor shaft 20 described above may be configured as shown in FIG. 6. Referring to fig. 6, two limiting steps 21 are axially arranged on the motor shaft 20 at intervals, the second longitudinal rib 22 is located between the two limiting steps 21, and the outer diameter of the second longitudinal rib 22 is larger than the diameter of one of the limiting steps 21 and smaller than the diameter of the other limiting step 21. The iron core assembly 30 is positioned in the axial direction of the motor shaft 20 by arranging the limiting step 21; one of the limiting steps 21 has a diameter smaller than that of the second longitudinal rib 22, so that an inlet is formed at the position, and the airflow entering from the tuyere 11 can enter the first channel 12 through the inlet; similarly, when the air current enters from another tuyere 11, the air deflector 40 is arranged at the position corresponding to the other tuyere 11, and the diameter of the limiting step 21 corresponding to the other tuyere 11 is smaller than that of the second longitudinal rib 22. The diameter relation between the limiting step 21 and the second longitudinal rib 22 is adjusted, the flow direction of the air flow is controlled, the air flow is limited to enter the second channel 13 only through the third channel 31 after entering the first channel 12, and the heat dissipation efficiency is improved.
In some embodiments, a modified embodiment of the second longitudinal rib 22 may be configured as shown in fig. 2. Referring to fig. 2, a plurality of second longitudinal ribs 22 are uniformly arranged around the axial direction of the motor shaft 20, and the adjacent second longitudinal ribs 22, the iron core assembly 30 and the outer peripheral surface of the motor shaft 20 are enclosed to form the first channel 12. The second longitudinal ribs 22 are uniformly arranged, so that uniform support can be realized on the inner periphery of the iron core assembly 30 after the iron core assembly 30 is installed, the stability of the iron core assembly 30 is improved, and the noise of the motor in the working process is reduced.
In some embodiments, a specific embodiment of the core assembly 30 can be configured as shown in fig. 2, 6-8. Referring to fig. 2, 6 to 8, the core assembly 30 includes a stator 34 and a rotor 35 coaxially disposed, the rotor 35 is sleeved on the motor shaft 20, the stator 34 is sleeved on the outer periphery of the rotor 35 and fixed to the housing 10, an air gap is formed between the stator 34 and the rotor 35, and the third channel 31 sequentially penetrates through the stator 34 and the rotor 35 along the radial direction of the motor shaft 20. Compared with the form of the included angle between the third channel 31 and the motor shaft 20, the third channel 31 extends along the radial direction of the motor shaft 20, the distance between the third channel 31 and the motor shaft 20 is shortest, the shortest distance between the airflow entering the second channel 13 from the first channel 12 is further realized, the airflow is quickly diffused in the motor, and the heat dissipation effect is improved.
In some embodiments, a specific implementation of the stator 34 and rotor 35 described above may be configured as shown in FIG. 2. Referring to fig. 2, the stator 34 and the rotor 35 respectively include a plurality of core units 36 arranged at intervals in the axial direction of the motor shaft 20, a spacer 37 is disposed between adjacent core units 36, and a third channel 31 is formed between two adjacent core units 36. That is, the stator 34 includes a plurality of core units 36 arranged at intervals along the axial direction of the motor shaft 20, and a spacer 37 arranged between adjacent core units 36; the rotor 35 also includes a plurality of core units 36 arranged at intervals in the axial direction of the motor shaft 20, and a spacer 37 arranged between the adjacent core units 36. The stator 34 and the third channels 31 on the rotor 35 are both provided with a plurality of channels, so that the volume of fluid flowing from the first channel 12 to the second channel 13 in unit time is increased, the rapid diffusion of airflow from the first channel 12 to the second channel 13 is realized, and the heat dissipation efficiency is improved.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. An electric machine, comprising:
the outer periphery of the shell is provided with two air ports at intervals along the axial direction of the shell;
the motor shaft is rotatably connected with the shell and is coaxially arranged;
the iron core assembly is sleeved on the motor shaft, a second channel is formed between the outer peripheral surface of the iron core assembly and the shell, a first channel is formed between the inner peripheral surface of the iron core assembly and the motor shaft, and a third channel for communicating the first channel with the second channel is further arranged on the iron core assembly; and
the air deflector is detachably connected to one of the air ports, the inner periphery of the air deflector is abutted against the iron core assembly, and the outer periphery of the air deflector is abutted against the shell;
and the air deflector, the end surface of the iron core and the inner end surface of the shell are enclosed to form a fourth channel which is communicated with one air opening and the first channel, and the second channel is communicated with the other air opening.
2. The motor of claim 1, wherein a first longitudinal rib is formed on an inner periphery of the housing in a protruding manner, and an inner peripheral surface of the first longitudinal rib abuts against the core assembly.
3. The electric machine of claim 2, wherein the first longitudinal ribs are uniformly arranged in a plurality around the axial direction of the housing, and the second channels are defined by the adjacent first longitudinal ribs, the outer peripheral surface of the core assembly and the inner peripheral surface of the housing.
4. The electric machine of claim 3, wherein the air deflection plate comprises:
one end of the connecting sleeve is butted with the end face of the iron core assembly, the other end of the connecting sleeve is butted with the inner end face of the shell, and an opening corresponding to one air port is formed in the connecting sleeve;
the two second plate bodies are respectively arranged on two opposite sides of the opening, are attached to the first longitudinal rib and are detachably connected with the first longitudinal rib; and
the first plate body is connected between the two second plate bodies, the outer periphery of the first plate body is abutted to the shell, and the inner periphery of the first plate body is abutted to the iron core assembly.
5. The motor according to claim 4, wherein the outer circumference of the connecting sleeve abuts against the inner circumference of the first longitudinal rib, and a threaded connecting piece matched with the first longitudinal rib is arranged on the connecting sleeve.
6. The motor of claim 1, wherein the motor shaft is provided with a second longitudinal rib protruding from an outer periphery thereof, and an outer periphery of the second longitudinal rib abuts against an inner periphery of the core assembly.
7. The motor of claim 6, wherein the motor shaft is provided with two limiting steps at intervals along the axial direction thereof, the second longitudinal rib is positioned between the two limiting steps, and the outer diameter of the second longitudinal rib is larger than the diameter of one of the limiting steps and smaller than the diameter of the other limiting step.
8. The motor of claim 6 or 7, wherein a plurality of second longitudinal ribs are uniformly arranged around the axial direction of the motor shaft, and the first channel is formed by surrounding the adjacent second longitudinal ribs, the iron core assembly and the outer peripheral surface of the motor shaft.
9. The motor of claim 1, wherein the core assembly includes a stator and a rotor coaxially disposed, the rotor is sleeved on the motor shaft, the stator is sleeved on the outer periphery of the rotor and fixed to the housing, an air gap is formed between the stator and the rotor, and the third channel sequentially penetrates through the stator and the rotor along a radial direction of the motor shaft.
10. The motor of claim 9, wherein the stator and the rotor respectively comprise a plurality of core units arranged at intervals along the axial direction of the motor shaft, a spacer is arranged between adjacent core units, and the third channel is formed between two adjacent core units.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222888111.3U CN218678665U (en) | 2022-10-31 | 2022-10-31 | Electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222888111.3U CN218678665U (en) | 2022-10-31 | 2022-10-31 | Electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218678665U true CN218678665U (en) | 2023-03-21 |
Family
ID=85566097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222888111.3U Active CN218678665U (en) | 2022-10-31 | 2022-10-31 | Electric machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218678665U (en) |
-
2022
- 2022-10-31 CN CN202222888111.3U patent/CN218678665U/en active Active
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