CN104343706A - Axial flow fan for brushless direct-current external rotor electric machine and fan blades - Google Patents
Axial flow fan for brushless direct-current external rotor electric machine and fan blades Download PDFInfo
- Publication number
- CN104343706A CN104343706A CN201410573211.4A CN201410573211A CN104343706A CN 104343706 A CN104343706 A CN 104343706A CN 201410573211 A CN201410573211 A CN 201410573211A CN 104343706 A CN104343706 A CN 104343706A
- Authority
- CN
- China
- Prior art keywords
- blade
- housing
- face
- electric machine
- external rotor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/5806—Cooling the drive system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/584—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps cooling or heating the machine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
Abstract
The invention relates to an axial flow fan for a brushless direct-current external rotor electric machine and fan blades. The axial flow fan comprises a central hub and a plurality of blades, wherein one end of each blade is connected with the central hub and the blades are radial; an included angle is formed between each blade and the rotating plane of the blade; the central hub comprises a cylindrical housing; an opening is formed in one end of the housing, and an air guide end face is arranged at the other end of the housing; one end of each blade is fixedly connected with the outer circumferential surface of the housing; through holes communicated with the interior of the housing are uniformly formed in the air guide end face; a plurality of radiation ribs are arranged on the inner surface of the housing and extend radially from the center of the air guide end face to the opening of the housing along the inner surface of the housing. The axial flow fan disclosed by the invention is good in air guide performance, low in working noise, and excellent in heat dissipation performance.
Description
Technical field
The present invention relates to a kind of axial-flow blower, particularly a kind of brushless direct-current external rotor electric machine axial-flow blower and flabellum.
Background technique
Blower fan is the mechanical energy relying on input, and improve gas pressure and to supply gas side by side the machinery of body, it is a kind of machinery providing kinetic energy.Blower fan generally comprises center hub and multiple blade, because blower fan is the axial motion relying on the mechanical energy of motor to realize air-flow, therefore in the course of the work, how to improve the heat dispersion of motor, is also increase the working life of blower fan and the key of continuous firing ability.
Summary of the invention
The object of this invention is to provide a kind of guide performance good, operating noise is little, thermal diffusivity exsertile brushless direct-current external rotor electric machine axial-flow blower and flabellum.
The technological scheme realizing the object of the invention is: the present invention includes center hub and multiple blade, and one end of each blade is all connected with center hub also radially; With angle between described each blade and its rotational plane; Described center hub comprises columniform housing, and one end of housing is opening, and the other end is provided with wind-guiding end face; One end of described blade is fixedly connected on the outer peripheral surface of housing; Described wind-guiding end face is evenly equipped with the through hole be communicated with enclosure interior; The internal surface of described housing is provided with many from the center of wind-guiding end face along the internal surface of housing to the radiating fin that the opening of housing radially extends.
Above-mentioned blade has first side and second side, and first side is near wind-guiding end face, and second side is near the opening of housing; The number of described radiating fin is equal with the number of blade, and every bar radiating fin is all corresponding with the second side of a blade.
Above-mentioned wind-guiding end face is equipped with between radiating fin a through hole.
Above-mentioned wind-guiding end face is circular cone shape; Described through hole is distributed in plane vertical with spin axis on wind-guiding end face.
As distortion, above-mentioned wind-guiding end face is circular cone shape; Described through hole is distributed in plane vertical with spin axis on wind-guiding end face.
As optimization, above-mentioned brushless direct-current external rotor electric machine axial-flow blower and flabellum also comprise a circular surrounding edge; Described blade is arranged between surrounding edge and center hub, and one end of blade is fixedly connected with center hub, and the other end is fixedly connected with surrounding edge.
The above-mentioned first side of each blade and the joint of surrounding edge are equipped with the power sheet extending to surrounding edge from first side; Described power sheet is triangular in shape, and one bar limit is connected with surrounding edge, and another limit is connected with the part near surrounding edge on first side; The rotational plane of described power sheet and blade forms angle; The angle that the rotational plane of described power sheet and blade is formed is greater than 0 °, is less than or equal to 3 °.
Above-mentioned center hub, blade, surrounding edge and power sheet are integrated moulding.
As optimization, above-mentioned brushless direct-current external rotor electric machine axial-flow blower and flabellum also comprise a guard; Described guard comprises cylindrical shell and fastener rings, and one end of cylindrical shell is opening end; Described surrounding edge rotating sleeve is contained in the cylindrical shell of guard; Coaxial with cylindrical shell on the outer peripheral surface that described fastener rings is fixedly installed on cylindrical shell; On described fastener rings, stationary annular is in column is provided with attachment hole.
The present invention has positive effect: (1) the present invention is provided with wind-guiding end face, and wind-guiding end face is provided with through hole, the inside of center hub is provided with radiating fin, when fan carries out work, because motor is contained in the housing of center hub, the rotation of center hub makes radiating fin play the effect of fan, further dispels the heat to motor surface; (2) radiating fin in the present invention, except the function of heat radiation, can also strengthen the structural strength of center hub; (3) wind-guiding end face of the present invention is circular cone shape, has good wind-guiding effect, reduces operating noise; (4) blade, center hub and surrounding edge are designed to integral piece by the present invention, improve the integrity of fan; (5) the power sheet of the present invention's design can reduce operating noise further; (6) guard of the present invention's setting, make structure more stable, running effect is better.
Accompanying drawing explanation
In order to make content of the present invention more easily be clearly understood, below according to specific embodiment also by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the main parallax stereogram of the embodiment of the present invention one;
Fig. 2 is the plan view of the embodiment of the present invention one
Fig. 3 is the rear perspective view of the embodiment of the present invention one;
Fig. 4 is the rear view of the embodiment of the present invention one;
Fig. 5 is the structural representation of the embodiment of the present invention two;
Fig. 6 is the plan view of the embodiment of the present invention two;
Fig. 7 is the side view of the embodiment of the present invention three.
Embodiment
(embodiment one)
See Fig. 1 to Fig. 4, the present invention includes center hub 1 and multiple blade 2, one end of each blade 2 is all connected with center hub 1 also radially; With angle between described each blade 2 and its rotational plane; Described center hub 1 comprises columniform housing 11, and one end of housing 11 is opening, and the other end is provided with the wind-guiding end face 12 of circular cone shape; One end of described blade 2 is fixedly connected on the outer peripheral surface of housing 11; Described wind-guiding end face 12 is evenly equipped with the through hole 13 be communicated with housing 11 inside; The internal surface of described housing 11 is provided with many from the center of wind-guiding end face 12 along the internal surface of housing 11 to the radiating fin 14 that the opening of housing 11 radially extends; Described blade 2 has first side 21 and second side 22, and first side 21 is near wind-guiding end face 12, and second side 22 is near the opening of housing 11; The number of described radiating fin 14 is equal with the number of blade 2, and every bar radiating fin 14 is all corresponding with the second side 22 of a blade 2; Described through hole 13 is distributed in plane vertical with spin axis on wind-guiding end face 12, and is only provided with a through hole 13 between radiating fin 14.
Said fans also comprises a circular surrounding edge 3; Described blade 2 is arranged between surrounding edge 2 and center hub 1, and one end of blade 2 is fixedly connected with center hub 1, and the other end is fixedly connected with surrounding edge 3; The first side 21 of described each blade 2 is equipped with the joint of surrounding edge 3 the power sheet 4 extending to surrounding edge 3 from first side 21; Described power sheet 4 is triangular in shape, and one bar limit is connected with surrounding edge 3, and another limit is connected with the part near surrounding edge 3 on first side 21; Described power sheet 4 and the rotational plane of blade 2 form the angle of 1 °; Described center hub 1, blade 2, surrounding edge 3 and power sheet 4 are integrated moulding.
(embodiment two)
See Fig. 5 and Fig. 6, the present invention, except having the structure characteristic as described in embodiment one, also has a guard 5; Described guard 5 comprises cylindrical shell 51 and fastener rings 52, and one end of cylindrical shell 51 is opening end; The cylindrical shell 51 that described surrounding edge 3 rotating sleeve is contained in guard 5 is interior; Coaxial with cylindrical shell 51 on the outer peripheral surface that described fastener rings 52 is fixedly installed on cylindrical shell 51; On described fastener rings 52, stationary annular is in column is provided with attachment hole.
(embodiment three)
See Fig. 7, center hub 1 of the present invention comprises columniform housing 11, and one end of housing 11 is opening, and the other end is provided with columned wind-guiding end face 12, and other technologies feature is identical with the structure characteristic described in embodiment two.
(embodiment four)
Medium power sheet 4 of the present invention and the rotational plane of blade 2 form the angle of 3 °, and other technologies feature is identical with the structure characteristic described in embodiment three.
Above-described specific embodiment; object of the present invention, technological scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. brushless direct-current external rotor electric machine axial-flow blower and a flabellum, comprises center hub (1) and multiple blade (2), and one end of each blade (2) is all connected with center hub (1) also radially; With angle between described each blade (2) and its rotational plane; It is characterized in that: described center hub (1) comprises columniform housing (11), one end of housing (11) is opening, and the other end is provided with wind-guiding end face (12); One end of described blade (2) is fixedly connected on the outer peripheral surface of housing (11); Described wind-guiding end face (12) is evenly equipped with the through hole (13) be communicated with housing (11) inside; The internal surface of described housing (11) is provided with many from the center of wind-guiding end face (12) along the internal surface of housing (11) to the radiating fin (14) that the opening of housing (11) radially extends.
2. brushless direct-current external rotor electric machine axial-flow blower according to claim 1 and flabellum, it is characterized in that: described blade (2) has first side (21) and second side (22), first side (21) is near wind-guiding end face (12), and second side (22) are near the opening of housing (11); The number of described radiating fin (14) is equal with the number of blade (2), and every bar radiating fin (14) is all corresponding with the second side (22) of a blade (2).
3. brushless direct-current external rotor electric machine axial-flow blower according to claim 2 and flabellum, is characterized in that: described wind-guiding end face (12) is positioned between radiating fin (14) and is equipped with a through hole (13).
4. brushless direct-current external rotor electric machine axial-flow blower according to claim 3 and flabellum, is characterized in that: described wind-guiding end face (12) is in circular cone shape; Described through hole (13) is distributed in the upper plane vertical with spin axis of wind-guiding end face (12).
5. brushless direct-current external rotor electric machine axial-flow blower according to claim 3 and flabellum, is characterized in that: described wind-guiding end face (12) is in cylindric; Described through hole (13) is distributed in the upper plane vertical with spin axis of wind-guiding end face (12).
6. the brushless direct-current external rotor electric machine axial-flow blower according to claim 4 or 5 and flabellum, is characterized in that: also comprise a circular surrounding edge (3); Described blade (2) is arranged between surrounding edge (2) and center hub (1), and one end of blade (2) is fixedly connected with center hub (1), and the other end is fixedly connected with surrounding edge (3).
7. brushless direct-current external rotor electric machine axial-flow blower according to claim 6 and flabellum, is characterized in that: the first side (21) of described each blade (2) and the joint of surrounding edge (3) are equipped with the power sheet (4) extending to surrounding edge (3) from first side (21); Described power sheet (4) is triangular in shape, and one bar limit is connected with surrounding edge (3), and another limit is connected with first side (21) upper part near surrounding edge (3); Described power sheet (4) forms angle with the rotational plane of blade (2); The angle that described power sheet (4) is formed with the rotational plane of blade (2) is greater than 0 °, is less than or equal to 3 °.
8. brushless direct-current external rotor electric machine axial-flow blower according to claim 7 and flabellum, is characterized in that: described center hub (1), blade (2), surrounding edge (3) and power sheet (4) are integrated moulding.
9. the brushless direct-current external rotor electric machine axial-flow blower according to Claim 8 described in one of them and flabellum, is characterized in that: also comprise a guard (5); Described guard (5) comprises cylindrical shell (51) and fastener rings (52), and one end of cylindrical shell (51) is opening end; Described surrounding edge (3) rotating sleeve is contained in the cylindrical shell (51) of guard (5); Coaxial with cylindrical shell (51) on the outer peripheral surface that described fastener rings (52) is fixedly installed on cylindrical shell (51); On described fastener rings (52), stationary annular is in column is provided with attachment hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410573211.4A CN104343706B (en) | 2014-10-23 | 2014-10-23 | Axial flow fan for brushless direct-current external rotor electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410573211.4A CN104343706B (en) | 2014-10-23 | 2014-10-23 | Axial flow fan for brushless direct-current external rotor electric machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104343706A true CN104343706A (en) | 2015-02-11 |
| CN104343706B CN104343706B (en) | 2017-02-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410573211.4A Active CN104343706B (en) | 2014-10-23 | 2014-10-23 | Axial flow fan for brushless direct-current external rotor electric machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104343706B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257594A (en) * | 2015-10-26 | 2016-01-20 | 杭州微光电子股份有限公司 | Outer rotor axial flow fan impeller device with cooling structure |
| CN105407692A (en) * | 2015-12-14 | 2016-03-16 | 联想(北京)有限公司 | Heat dissipation apparatus and electronic device |
| CN105822590A (en) * | 2016-03-21 | 2016-08-03 | 吴海 | Fan blade with outer enclosure protection function and fan using fan blade |
| CN107542686A (en) * | 2017-06-15 | 2018-01-05 | 新华三技术有限公司 | Fan and electronic equipment |
| CN108397404A (en) * | 2018-02-23 | 2018-08-14 | 杭州微光电子股份有限公司 | Axial flow blower and ventilation and heat equipment |
| CN110821884A (en) * | 2018-08-14 | 2020-02-21 | 建准电机工业股份有限公司 | Fan wheel |
| CN112421881A (en) * | 2020-11-02 | 2021-02-26 | 合肥珺安机电设备有限公司 | External rotor electric machine with heat dissipation function |
| CN113520216A (en) * | 2021-05-31 | 2021-10-22 | 黎巍 | Direct-suction type dust collector |
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| US20040013526A1 (en) * | 2002-07-17 | 2004-01-22 | Hayes Cooling Technologies, Llc | Ring cooling fan including stiffening ribs fully connected on at most two sides |
| CN1914425A (en) * | 2004-02-03 | 2007-02-14 | 斯佩尔汽车有限公司 | An axial fan |
| CN101691874A (en) * | 2009-07-14 | 2010-04-07 | 广东顺威精密塑料股份有限公司 | Axial flow wind wheel with improved blades |
| CN102639877A (en) * | 2010-05-13 | 2012-08-15 | 罗伯特·博世有限公司 | Axial-flow fan |
| CN204267319U (en) * | 2014-10-23 | 2015-04-15 | 常州祥明电机有限公司 | Brushless direct-current external rotor electric machine axial fan |
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2014
- 2014-10-23 CN CN201410573211.4A patent/CN104343706B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040013526A1 (en) * | 2002-07-17 | 2004-01-22 | Hayes Cooling Technologies, Llc | Ring cooling fan including stiffening ribs fully connected on at most two sides |
| CN1914425A (en) * | 2004-02-03 | 2007-02-14 | 斯佩尔汽车有限公司 | An axial fan |
| CN101691874A (en) * | 2009-07-14 | 2010-04-07 | 广东顺威精密塑料股份有限公司 | Axial flow wind wheel with improved blades |
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| CN204267319U (en) * | 2014-10-23 | 2015-04-15 | 常州祥明电机有限公司 | Brushless direct-current external rotor electric machine axial fan |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257594A (en) * | 2015-10-26 | 2016-01-20 | 杭州微光电子股份有限公司 | Outer rotor axial flow fan impeller device with cooling structure |
| CN105407692A (en) * | 2015-12-14 | 2016-03-16 | 联想(北京)有限公司 | Heat dissipation apparatus and electronic device |
| CN105822590A (en) * | 2016-03-21 | 2016-08-03 | 吴海 | Fan blade with outer enclosure protection function and fan using fan blade |
| CN107542686A (en) * | 2017-06-15 | 2018-01-05 | 新华三技术有限公司 | Fan and electronic equipment |
| CN108397404A (en) * | 2018-02-23 | 2018-08-14 | 杭州微光电子股份有限公司 | Axial flow blower and ventilation and heat equipment |
| CN108397404B (en) * | 2018-02-23 | 2020-05-22 | 杭州微光电子股份有限公司 | Axial flow fan and ventilation and heat dissipation equipment |
| CN110821884A (en) * | 2018-08-14 | 2020-02-21 | 建准电机工业股份有限公司 | Fan wheel |
| CN112421881A (en) * | 2020-11-02 | 2021-02-26 | 合肥珺安机电设备有限公司 | External rotor electric machine with heat dissipation function |
| CN113520216A (en) * | 2021-05-31 | 2021-10-22 | 黎巍 | Direct-suction type dust collector |
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|---|---|
| CN104343706B (en) | 2017-02-15 |
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| CB02 | Change of applicant information |
Address after: 213011 No. 518 Wu Cheng Road, Changzhou, Jiangsu Applicant after: Changzhou Xiangming Electromotor Co., Ltd. Address before: 213011 No. 518 Wu Cheng Road, Changzhou, Jiangsu Applicant before: Changzhou Xiangxing Electric Machine Co., Ltd. |
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| GR01 | Patent grant |