CN210380476U - Rotor shell structure, outer rotor motor and washing machine with same - Google Patents
Rotor shell structure, outer rotor motor and washing machine with same Download PDFInfo
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- CN210380476U CN210380476U CN201921626867.2U CN201921626867U CN210380476U CN 210380476 U CN210380476 U CN 210380476U CN 201921626867 U CN201921626867 U CN 201921626867U CN 210380476 U CN210380476 U CN 210380476U
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- sheet
- rotor
- rotor housing
- housing structure
- air
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- 238000005406 washing Methods 0.000 title claims abstract description 10
- 230000017525 heat dissipation Effects 0.000 claims abstract description 21
- 238000009423 ventilation Methods 0.000 claims abstract description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 abstract description 10
- 230000010349 pulsation Effects 0.000 abstract description 6
- 230000005855 radiation Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 241000883990 Flabellum Species 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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- Motor Or Generator Cooling System (AREA)
- Motor Or Generator Frames (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
Abstract
The application provides a rotor housing structure, external rotor electric machine and have its washing machine, rotor housing structure includes: the heat dissipation structure is formed by a plurality of sheet air deflectors circumferentially arranged around the rotating shaft, and a ventilation opening is formed between every two adjacent air deflectors. According to the rotor shell structure of the application, not only can the pressure pulsation that produces among the rotatory process of rotor be effectual to reduce the air noise to can accelerate the motor heat dissipation.
Description
Technical Field
The application belongs to the technical field of motor heat dissipation, concretely relates to rotor housing structure, external rotor electric machine and have its washing machine.
Background
At present, in the process of high-speed rotation of an outer rotor motor, air around a rotor is easily stirred due to large volume of the outer rotor motor, and large air noise is generated.
However, most of the rotor shell surfaces of the external rotor type motors of the washing machines in the prior art are of grid structures or rectangular or round hole-shaped air inlets are formed in the rotor shell surfaces, reinforcing ribs are additionally arranged on the rotor shell surfaces to enhance structural strength, the rotor shell surface structures enable air pressure flowing through the rotor shell surfaces to be large, turbulent boundary layers are large in attachment area on the rotor shell surfaces, pressure pulsation is large, pneumatic noise is large, and poor heat dissipation is caused by the air inlet form.
Therefore, how to provide a rotor shell structure, an outer rotor motor and a washing machine with the same, which can effectively reduce pressure pulsation generated in the rotation process of a rotor, reduce air noise and accelerate heat dissipation of the motor, becomes a problem which needs to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
Therefore, the technical problem to be solved by the present application is to provide a rotor housing structure, an outer rotor motor and a washing machine having the same, which can effectively reduce pressure pulsation generated during the rotation of a rotor, reduce air noise, and accelerate heat dissipation of the motor.
In order to solve the above problem, the present application provides a rotor case structure including:
the heat dissipation structure is formed by a plurality of sheet air deflectors circumferentially arranged around the rotating shaft, and a ventilation opening is formed between every two adjacent air deflectors.
Preferably, a fixing part is further included; the fixed part, the heat dissipation structure and the rotating shaft are sequentially connected from the edge of the end wall to the center; the first end of the flaky air deflector in the length direction is connected with the fixed part, and the second end of the flaky air deflector is connected with the rotating shaft.
Preferably, the width of the air deflector gradually increases from a position close to the rotation axis to a position far from the rotation axis.
Preferably, at least one side of the air deflector in the width direction is provided with a diversion tooth, and the diversion tooth is used for splitting the airflow flowing through the surface of the rotor shell.
Preferably, the air deflector is disposed obliquely with respect to the horizontal direction.
Preferably, the plurality of air deflectors circumferentially arranged around the rotation axis are equidistantly arranged, and the number of the air deflectors is odd.
Preferably, the heat dissipation structure further comprises a hub, and the hub is arranged on the heat dissipation structure and is integrally connected with the sheet air deflector.
Preferably, the heat dissipation structure is provided with radial reinforcing ribs.
Preferably, the radial rib penetrates the air guide plate in the thickness direction of the air guide plate.
According to still another aspect of the present application, there is provided an outer rotor motor including a rotor case structure, characterized in that the rotor case structure is the above-described rotor case structure.
According to still another aspect of the present application, there is provided a washing machine including a rotor housing structure, characterized in that the rotor housing structure is the above-described outer rotor motor.
The application provides a be provided with heat radiation structure on rotor housing structure's the casing end wall, heat radiation structure is formed by a plurality of flaky aviation baffles that set up around rotation axis circumference, forms the vent between two adjacent flaky aviation baffles. The flaky aviation baffle can cut the air current, reduces the air noise to, this application aviation baffle structure has alleviateed the whole weight of rotor, reduces the energy loss of the rotatory in-process of rotor, improves motor efficiency, and this application can also effectually reduce the pressure pulsation that the rotatory in-process of rotor produced, reduces the air noise, and can accelerate the motor heat dissipation.
Drawings
Fig. 1 is a schematic structural diagram of a rotor housing structure according to an embodiment of the present application;
fig. 2 is a schematic structural view of an air deflector according to an embodiment of the present application;
FIG. 3 is a cross-sectional view of an air deflection plate according to an embodiment of the present disclosure;
FIG. 4 is an enlarged view of area A of FIG. 3;
fig. 5 is a cross-sectional view of a radial stiffener according to an embodiment of the present application.
The reference numerals are represented as:
1. a housing end wall; 2. a rotating shaft; 3. a heat dissipation structure; 31. a sheet-like air deflector; 4. a vent; 5. a fixed portion; 6. a shunt tooth; 7. a hub; 8. and radial reinforcing ribs.
Detailed Description
Referring collectively to fig. 1, according to an embodiment of the present application, a rotor housing structure includes: casing end wall 1, be provided with heat radiation structure 3 on the casing end wall 1, heat radiation structure 3 is formed by a plurality of slice aviation baffles 31 around 2 circumference settings of rotation axis, form vent 4 between two adjacent slice aviation baffles 31, do benefit to the cutting air in the rotatory in-process of motor, reduce the air noise, and, the structure of this application slice aviation baffle 31 has alleviateed the whole weight of rotor, reduce the energy loss of rotor rotation in-process, improve motor efficiency
Further, a fixing portion 5 is also included; the fixed part 5, the heat dissipation structure 3 and the rotating shaft 2 are sequentially connected from the edge of the end wall 1 of the shell to the center; the first end of the sheet-like air deflector 31 in the longitudinal direction is connected to the fixed portion 5, and the second end is connected to the rotary shaft 2.
Further, the width of the sheet-like air guide plate 31 gradually increases from the position close to the rotation axis 2 to the direction away from the rotation axis 2.
Further, the thickness of the sheet-shaped air deflector 31 is 2.5mm to 5 mm.
Further, the thickness of the sheet-like air guide plate 31 is set uniformly.
Referring to fig. 2 in combination, the present application also discloses some embodiments, a splitter tooth 6 is disposed on at least one side of the sheet-shaped air deflector 31 in the width direction, and when an air flow flows through the surface of the rotor shell of the motor, the air flow is split, so that the air pressure flowing through the surface of the rotor shell is small, and the attachment area of the turbulent boundary layer on the surface of the rotor shell is reduced, so that the pressure pulsation is reduced, and the aerodynamic noise is reduced.
Further, the number of the shunt teeth 6 is odd.
Further, the pitch is T, T is (outer edge radius of sheet-shaped air deflector 31-root radius of sheet-shaped air deflector 31) × (1% to 2%), the tooth height is h, h is (outer edge radius of sheet-shaped air deflector 31-root radius of sheet-shaped air deflector 31) × (0.6% to 0.8%), and the thickness of the serrations is equal to the thickness of sheet-shaped air deflector 31.
Further, the shunt teeth 6 are V-shaped saw teeth.
Further, the splitter teeth 6 are tidal or wave-shaped.
Referring to fig. 3, the present application also discloses some embodiments, the sheet-shaped air deflectors 31 are arranged obliquely relative to the horizontal direction, so that the gap between the air inlets of the sheet-shaped air deflectors 31 is increased, the air inlet amount inside the rotor is increased, the air exchange inside and outside the rotor is facilitated, and the problems of low air intake amount of the rotor, untimely heat dissipation and the like are solved.
Referring to fig. 4 in combination, the application also discloses some embodiments, the inclination angle a of the sheet-shaped air deflector 31 and the horizontal plane is 6-8 degrees, simulation verifies that the angle is beneficial to reducing the noise of the motor, and air can enter the motor through the gap between the inclination angles in the rotation process of the motor, so that the heat dissipation effect of the motor is achieved.
Further, slice aviation baffle 31 on the rotor housing designs for fan blade form, the high-speed rotatory in-process of motor, some wind pressure can be shunted fast to the effect of reposition of redundant personnel tooth 6, reduce the noise that the air turbulent flow caused, reduce the noise that wind pressure and air friction produced, reposition of redundant personnel tooth 6 is favorable to shearing the air simultaneously, make the air flow through the flabellum surface along the direction of reposition of redundant personnel tooth 6, simultaneously can also form the offset with the swirl that the flabellum edge formed, offset the noise that the swirl of edge produced.
Further, the plurality of sheet-shaped air deflectors 31 arranged circumferentially around the rotating shaft 2 are arranged at equal intervals, and the number of the sheet-shaped air deflectors 31 is odd, so that the condition that the sheet-shaped air deflectors 31 resonate in the rotating process of the motor is prevented.
Further, still include wheel hub 7, wheel hub 7 sets up on heat radiation structure 3 to be connected with slice aviation baffle 31 integral type, play the effect of circumference strengthening rib, and can alleviate slice aviation baffle 31 vibration, reduce vibration noise.
Referring to fig. 5 in combination, the present application also discloses embodiments in which the heat dissipation structure 3 is provided with radial ribs 8.
Further, the radial reinforcing rib 8 is arranged on the sheet-shaped air deflector 31.
Further, the radial ribs 8 are arranged equidistantly.
Further, the radial rib 8 penetrates the sheet-shaped air guide plate 31 in the thickness direction of the sheet-shaped air guide plate 31.
Furthermore, the thickness of the radial reinforcing ribs 8 adopts a gradient design, the radial reinforcing ribs 8 are thicker at one end close to the rotating shaft 2 and penetrate through the sheet-shaped air deflector 31, and the radial reinforcing ribs 8 are thinner at one end far away from the rotating shaft 2, so that the structural rigidity of the rotor shell is improved.
Furthermore, the sheet air deflector 31 is provided with noise reduction holes, the direction of the noise reduction holes is in accordance with the direction of an air streamline when the motor rotates, and air flows through the holes to form small vortexes which interact with an original sound field to reduce noise.
Furthermore, the upper surface of the sheet-shaped air deflector 31 is provided with noise reduction grooves, the structure of the noise reduction grooves is pits similar to the surface structure of a golf ball, the aerodynamic principle is met, and the pits can reduce air resistance and noise when the motor rotates.
Further, the thickness is designed in a gradient manner, the radial reinforcing ribs 8 are thicker at one end close to the rotating shaft 2 and penetrate through the sheet-shaped air deflector 31, and the radial reinforcing ribs 8 are thinner at one end far away from the rotating shaft 2. The radial ribs 8 are equally spaced around the axis of rotation 2.
According to an embodiment of the application, an outer rotor motor comprises a rotor shell structure, and is characterized in that the rotor shell structure is the rotor shell structure.
According to an embodiment of the application, the washing machine comprises a rotor shell structure, and is characterized in that the rotor shell structure is the outer rotor motor.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.
Claims (11)
1. A rotor housing structure, comprising: the heat dissipation structure comprises a shell end wall (1), wherein a heat dissipation structure (3) is arranged on the shell end wall, the heat dissipation structure (3) is formed by a plurality of sheet air deflectors (31) which are circumferentially arranged around a rotating shaft (2), and a ventilation opening (4) is formed between every two adjacent sheet air deflectors (31).
2. The rotor housing structure according to claim 1, further comprising a fixing portion (5); the fixed part (5), the heat dissipation structure (3) and the rotating shaft (2) are sequentially connected from the edge of the end wall (1) of the shell to the center; the first end of the sheet-shaped air deflector (31) in the length direction is connected with the fixed part (5), and the second end is connected with the rotating shaft (2).
3. The rotor housing structure according to claim 1, wherein the width of the sheet-like air deflector (31) gradually increases from a position close to the rotation axis (2) to a position distant from the rotation axis (2).
4. The rotor housing structure according to claim 1, characterized in that at least one side of the sheet-like air deflector (31) in the width direction is provided with a flow splitting tooth (6), and the flow splitting tooth (6) is used for splitting the air flow flowing through the surface of the rotor shell.
5. The rotor housing structure according to claim 1, wherein the sheet-like air deflector (31) is disposed obliquely to the horizontal direction.
6. The rotor housing structure according to claim 1, wherein the plurality of sheet-like air deflectors (31) circumferentially arranged around the rotation shaft (2) are equidistantly arranged, and the number of the sheet-like air deflectors (31) is odd.
7. The rotor housing structure according to claim 1, further comprising a hub (7), wherein the hub (7) is disposed on the heat dissipating structure (3) and integrally connected to the sheet air deflectors (31).
8. Rotor housing structure according to claim 1, characterised in that radial stiffening ribs (8) are provided on the heat dissipating structure (3).
9. The rotor housing structure according to claim 8, characterized in that the radial reinforcing rib (8) penetrates the sheet-like air deflector (31) in a thickness direction of the sheet-like air deflector (31).
10. An external rotor electric machine comprising a rotor housing structure, characterized in that the rotor housing structure is a rotor housing structure according to any one of claims 1 to 9.
11. A washing machine comprising a rotor housing structure, characterized in that the rotor housing structure is the outer rotor motor as recited in claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921626867.2U CN210380476U (en) | 2019-09-27 | 2019-09-27 | Rotor shell structure, outer rotor motor and washing machine with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921626867.2U CN210380476U (en) | 2019-09-27 | 2019-09-27 | Rotor shell structure, outer rotor motor and washing machine with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210380476U true CN210380476U (en) | 2020-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921626867.2U Active CN210380476U (en) | 2019-09-27 | 2019-09-27 | Rotor shell structure, outer rotor motor and washing machine with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210380476U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110545005A (en) * | 2019-09-27 | 2019-12-06 | 珠海格力电器股份有限公司 | rotor shell structure, outer rotor motor and washing machine with same |
-
2019
- 2019-09-27 CN CN201921626867.2U patent/CN210380476U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110545005A (en) * | 2019-09-27 | 2019-12-06 | 珠海格力电器股份有限公司 | rotor shell structure, outer rotor motor and washing machine with same |
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