CN221442900U - Fan with counter-rotating blades - Google Patents
Fan with counter-rotating blades Download PDFInfo
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- CN221442900U CN221442900U CN202420187562.0U CN202420187562U CN221442900U CN 221442900 U CN221442900 U CN 221442900U CN 202420187562 U CN202420187562 U CN 202420187562U CN 221442900 U CN221442900 U CN 221442900U
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- rotor
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- 238000004804 winding Methods 0.000 claims abstract description 23
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses a fan with anti-rotation blades, which comprises: the fan comprises a fan frame, a fan blade assembly arranged at one side of the fan frame, a stator assembly arranged in the fan frame, a rotor, a bearing and an annular connecting piece for connecting the bearing and the fan blade assembly; the fan blade assembly comprises an inner ring, a plurality of inner fan blades arranged on the outer wall of the inner ring, an outer ring arranged outside the inner fan blades, and a plurality of outer fan blades arranged on the outer wall of the outer ring; the air outlet direction of the inner fan blade is opposite to that of the outer fan blade; the stator assembly comprises a shaft core and a stator winding, and the shaft core, the bearing, the annular connecting piece, the rotor and the stator assembly are sequentially arranged from inside to outside along the radial direction of the shaft core. The utility model adopts the design of the inner and outer blades, the outer blades provide performance output, the inner blades radiate heat for the stator winding, the problems caused by heating of the stator winding are reduced, and the working performance of the fan is improved.
Description
Technical Field
The utility model relates to the field of fan heat dissipation, in particular to a fan with counter-rotating blades.
Background
The fan inevitably generates heat when running for a long time, and the long-term heat generation can cause motor aging, and the failure rate of the motor is high.
In the existing fan structure, the magnet sleeve is required to be wrapped inside the fan blade assembly, the radiating holes cannot be formed, the inner stator is completely wrapped by the outer assembly of the fan blade assembly, heat cannot be dissipated, the stator winding is heated greatly, the temperature rise is high, the rotating speed cannot be increased, and accordingly the performance of the fan is problematic.
Disclosure of utility model
The utility model overcomes the defect of difficult heat dissipation in the fan in the prior art, and provides a fan with counter-rotating blades, and in order to achieve the purposes, the utility model adopts the following technical scheme: a fan with counter-rotating blades, comprising: the fan comprises a fan frame, a fan blade assembly arranged at one side of the fan frame, a stator assembly arranged in the fan frame, a rotor, a bearing and an annular connecting piece for connecting the bearing and the fan blade assembly;
The fan blade assembly comprises an inner ring, a plurality of inner fan blades arranged on the outer wall of the inner ring, an outer ring arranged outside the inner fan blades, and a plurality of outer fan blades arranged on the outer wall of the outer ring; the air outlet direction of the inner fan blade is opposite to the air outlet direction of the outer fan blade;
The stator assembly comprises a shaft core and a stator winding, and the shaft core, the bearing, the annular connecting piece, the rotor and the stator assembly are sequentially arranged from inside to outside along the radial direction of the shaft core.
In a preferred embodiment of the present utility model, the inner ring and the outer ring are concentric circles, and the inner fan blade and the outer fan blade are uniformly distributed along the circumferential direction.
In a preferred embodiment of the present utility model, the annular connecting member includes a first annular section, a second annular section, a third annular section and a fourth annular section integrally formed along the axial direction of the shaft core;
The outside of the bearing is provided with a groove with equal length as a third annular piece, and the third annular piece is at least partially clamped in the groove;
The length of the rotor is equal to the sum of the heights of the second section of annular piece, the third section of annular piece and the fourth section of annular piece, and one end, far away from the fan blade assembly, of the first section of annular piece is propped against the rotor.
In a preferred embodiment of the present utility model, the inner diameter of the first segment ring, the inner diameter of the second segment ring and the inner diameter of the fourth segment ring are equal, and the outer diameter of the second segment ring, the outer diameter of the third segment ring and the outer diameter of the fourth segment ring are equal;
the outer diameter of the first section annular piece is equal to the outer diameter of the rotor, and the inner diameter of the third section annular piece is smaller than the inner diameter of the first section annular piece.
In a preferred embodiment of the present utility model, the curved surface of the inner wall of the first ring segment coincides with the curved surface of the inner wall of the second ring segment, and the curved surface of the outer wall of the second ring segment coincides with the curved surface of the outer wall of the third ring segment, and the curved surface of the outer wall of the fourth ring segment.
In a preferred embodiment of the present utility model, the bottom of the first ring is disposed on the rotor and fixed to the rotor, the second ring is disposed on the inner side of the rotor, and the sum of the thickness of the rotor and the thickness of the second ring is the thickness of the first ring.
In a preferred embodiment of the utility model, the projection of the stator winding onto the fan blade assembly is located inside the outer ring.
In a preferred embodiment of the present utility model, one end of the inner fan blade is connected to the inner ring, the other end is connected to the outer ring, and the inner ring is fixedly connected to the annular connecting member.
In a preferred embodiment of the utility model, the rotor is an annular copper sleeve.
The utility model solves the defects existing in the background technology, and has the following beneficial effects:
The utility model adopts the design of the inner and outer blades, the outer blades provide performance output, the inner blades radiate heat for the stator winding, the problems caused by heating of the stator winding are reduced, and the working performance of the fan is improved.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other embodiments of the drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a fan with counter-rotating blades according to an embodiment of the present utility model;
FIG. 2 is a front view of a fan with counter-rotating blades according to an embodiment of the present utility model;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
Fig. 4 is a schematic view illustrating an arrangement of an annular connection member of a fan with counter-rotating blades according to an embodiment of the utility model.
The reference numerals are as follows:
10-fan frame; 20-a fan blade assembly; 201-an inner ring; 202-inner fan blades; 203-an outer ring; 204-outer fan blades; 301-bearing; 302-a ring-shaped connection; 3021-a first segment ring; 3022-a second segment ring; 3023-a third segment ring; 3024-fourth segment ring members; 401-a shaft core; 402-stator windings; 50-rotor.
Detailed Description
In order that the above objects, features and advantages of the utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and detailed description thereof, which are simplified schematic drawings which illustrate only the basic structure of the utility model and therefore show only those features which are relevant to the utility model, it being noted that embodiments of the utility model and features of the embodiments may be combined with each other without conflict.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the scope of the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may include one or more of the feature, either explicitly or implicitly. In the description of the utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art in a specific case.
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
As shown in fig. 1 to 3, the present utility model discloses a fan with counter-rotating blades, which includes a fan frame 10, a fan blade assembly 20, a bearing 301, an annular connector 302, a stator assembly, and a rotor 50.
Referring to fig. 2, the stator assembly includes a shaft core 401 and a stator winding 402, the shaft core 401 is inserted into an inner ring of the bearing 301, the annular connecting member 302 is connected to an outer ring of the bearing 301, the rotor 50 is disposed outside the annular connecting member 302, the rotor 50 is an annular copper sleeve, the stator winding 402 is disposed outside the rotor 50, and the fan frame 10 is disposed outside the stator. That is, the shaft core 401, the bearing 301, the annular connector 302, the rotor 50, the stator winding 402, and the fan frame 10 are disposed in this order from the inside to the outside in the radial direction of the shaft core 401.
Specifically, as shown in fig. 3 and 4, the annular connection member 302 includes a first segment annular member 3021, a second segment annular member 3022, a third segment annular member 3023, and a fourth segment annular member 3024 integrally formed in the axial direction of the shaft core 401, the difference between the outer diameter and the inner diameter in the annular members being defined as the thickness of the annular members, the thickness of the first segment annular member 3021 being larger than the thickness of the second segment annular member 3022, the thickness of the third segment annular member 3023 being larger than the thickness of the second segment annular member 3022, the thickness of the fourth segment annular member 3024 being equal to the thickness of the second segment annular member 3022.
The inner diameter of the first ring segment 3021, the inner diameter of the second ring segment 3022, and the inner diameter of the fourth ring segment 3024 are equal, the outer diameter of the second ring segment 3022, the outer diameter of the third ring segment 3023, and the outer diameter of the fourth ring segment 3024 are equal, and the outer diameter of the first ring segment 3021 is equal to the outer diameter of the rotor 50.
The curved surface of the inner wall of the first ring 3021 coincides with the curved surface of the inner wall of the second ring 3022, the curved surface of the outer wall of the third ring 3023, and the curved surface of the outer wall of the fourth ring 3024 coincide.
The bottom of the first segment ring 3021 is disposed on the rotor 50 and fixed to the rotor 50, the second segment ring 3022 is disposed on the inner side of the rotor 50, and the sum of the thickness of the rotor 50 and the thickness of the second segment ring 3022 is the thickness of the first segment ring 3021. The exterior of the bearing 301 is provided with a groove of equal length to the third segment ring 3023, the third segment ring 3023 being captured in the groove.
In summary, the bearing 301, the annular connecting member 302 and the rotor 50 are fixedly connected, the annular connecting member 302 and the rotor 50 rotate synchronously, and the stator winding 402 is disposed outside the rotor 50 and kept stationary.
Referring to fig. 2 and 3, the fan blade assembly 20 includes an inner ring 201, an outer ring 203, a plurality of inner fan blades 202 disposed between the inner ring 201 and the outer ring 203, and a plurality of outer fan blades 204 disposed outside the outer ring 203.
The inner ring 201, the inner fan blade 202, the outer ring 203 and the outer fan blade 204 in the fan blade assembly 20 are integrally formed, the inner ring 201 and the outer ring 203 are concentric circles, one end of the inner fan blade 202 is connected with the inner ring 201, and the other end is connected with the outer ring 203. The inner ring 201 is fixedly connected with the annular connecting member 302, specifically, the annular connecting member 302 is disposed inside the inner ring 201, an outer wall of the annular connecting member 302 is fixedly connected with an inner wall of the inner ring 201, and the inner wall of the inner ring 201 is fixedly matched with an outer wall of the first segment of the annular member 3021. The rotation of the annular connector 302 may rotate the fan blade assembly 20. The inner fan blades 202 are along the outer uniform portion of the inner ring 201, and the outer fan blades 204 are along the outer uniform portion of the outer ring 203. The bending directions of the inner fan blade 202 and the outer fan blade 204 are opposite, that is, the inner fan blade 202 is a counter-rotating blade, the air outlet directions of the inner fan blade 202 and the outer fan blade 204 are opposite, the air outlet direction of the inner fan blade 202 is the direction facing the stator assembly, and the air outlet direction of the outer fan blade 204 is the direction away from the stator assembly.
In addition, the projection of the stator windings 402 onto the fan blade assembly 20 is located inside the outer ring 203. That is, the stator windings 402 are all located in the air outlet region of the inner fan blade 202. Because the stator winding 402 heats up seriously when the fan is operated for a long time, the inner fan blade 202 rotates to cool the heated stator winding 402, and the outer fan blade 204 rotates to supply air to the outside.
When the fan is in operation, the fan is electrified, the bearing 301 and the rotor 50 synchronously rotate to drive the annular connecting piece 302 and the fan blade assembly 20 to rotate, the inner fan blade 202 supplies air to the direction of the stator winding 402, the stator winding 402 is subjected to heat dissipation and temperature reduction, and the outer fan blade 204 supplies air to the outside, so that the integral operation purpose of the fan is realized.
The utility model adopts the design that the stator is separated from the fan blades, the stator is independently arranged below the fan blades and the inner and outer fan blades, the outer fan blades 204 provide performance output, the inner fan blades 202 radiate heat for the stator winding 402, the problems caused by heating of the stator winding 402 are reduced, and the working performance of the fan is improved.
The foregoing examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (9)
1. A fan with counter-rotating blades, comprising: the fan comprises a fan frame, a fan blade assembly arranged at one side of the fan frame, a stator assembly arranged in the fan frame, a rotor, a bearing and an annular connecting piece for connecting the bearing and the fan blade assembly;
The fan blade assembly comprises an inner ring, a plurality of inner fan blades arranged on the outer wall of the inner ring, an outer ring arranged outside the inner fan blades, and a plurality of outer fan blades arranged on the outer wall of the outer ring; the air outlet direction of the inner fan blade is opposite to the air outlet direction of the outer fan blade;
The stator assembly comprises a shaft core and a stator winding, and the shaft core, the bearing, the annular connecting piece, the rotor and the stator assembly are sequentially arranged from inside to outside along the radial direction of the shaft core.
2. A counter-rotating vane fan as set forth in claim 1 wherein: the inner ring and the outer ring are concentric circles, and the inner fan blades and the outer fan blades are uniformly distributed along the circumferential direction.
3. A counter-rotating vane fan as set forth in claim 1 wherein: the annular connecting piece comprises a first section of annular piece, a second section of annular piece, a third section of annular piece and a fourth section of annular piece which are integrally formed along the axial direction of the shaft core;
The outside of the bearing is provided with a groove with equal length as a third annular piece, and the third annular piece is at least partially clamped in the groove;
The length of the rotor is equal to the sum of the heights of the second section of annular piece, the third section of annular piece and the fourth section of annular piece, and one end, far away from the fan blade assembly, of the first section of annular piece is propped against the rotor.
4. A counter-rotating vane fan as claimed in claim 3, wherein: the inner diameter of the first section annular piece, the inner diameter of the second section annular piece and the inner diameter of the fourth section annular piece are equal, and the outer diameter of the second section annular piece, the outer diameter of the third section annular piece and the outer diameter of the fourth section annular piece are equal;
the outer diameter of the first section annular piece is equal to the outer diameter of the rotor, and the inner diameter of the third section annular piece is smaller than the inner diameter of the first section annular piece.
5. A counter-rotating vane fan as set forth in claim 4 wherein: the curved surface of the inner wall of the first section of annular piece coincides with the curved surface of the inner wall of the second section of annular piece, and the curved surface of the outer wall of the second section of annular piece coincides with the curved surface of the outer wall of the third section of annular piece and the curved surface of the outer wall of the fourth section of annular piece.
6. A counter-rotating vane fan as claimed in claim 3, wherein: the bottom of the first section annular piece is arranged on the rotor and fixed with the rotor, the second section annular piece is arranged on the inner side of the rotor, and the sum of the thickness of the rotor and the thickness of the second section annular piece is the thickness of the first section annular piece.
7. A counter-rotating vane fan as set forth in claim 1 wherein: the projection of the stator windings onto the fan blade assembly is located inside the outer ring.
8. A counter-rotating vane fan as set forth in claim 1 wherein: one end of the inner fan blade is connected with the inner ring, the other end of the inner fan blade is connected with the outer ring, and the inner ring is fixedly connected with the annular connecting piece.
9. A counter-rotating vane fan as set forth in claim 1 wherein: the rotor is an annular copper sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420187562.0U CN221442900U (en) | 2024-01-26 | 2024-01-26 | Fan with counter-rotating blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420187562.0U CN221442900U (en) | 2024-01-26 | 2024-01-26 | Fan with counter-rotating blades |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221442900U true CN221442900U (en) | 2024-07-30 |
Family
ID=92072038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420187562.0U Active CN221442900U (en) | 2024-01-26 | 2024-01-26 | Fan with counter-rotating blades |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221442900U (en) |
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2024
- 2024-01-26 CN CN202420187562.0U patent/CN221442900U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |