CN111614184A - Generator with fan - Google Patents
Generator with fan Download PDFInfo
- Publication number
- CN111614184A CN111614184A CN202010440079.5A CN202010440079A CN111614184A CN 111614184 A CN111614184 A CN 111614184A CN 202010440079 A CN202010440079 A CN 202010440079A CN 111614184 A CN111614184 A CN 111614184A
- Authority
- CN
- China
- Prior art keywords
- generator
- air
- stator
- air outlet
- hood shell
- 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.)
- Pending
Links
- 238000004804 winding Methods 0.000 claims description 30
- 238000009423 ventilation Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims 1
- 230000017525 heat dissipation Effects 0.000 abstract description 30
- 230000000694 effects Effects 0.000 abstract description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/24—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses a generator with a fan, belonging to the field of generators and comprising a hood shell, wherein a stator core and a rotor core are arranged in the hood shell; air inlets are formed in two ends of the hood shell, an air outlet window is formed in the middle of the hood shell, and an axial flow fan is arranged on the air outlet window. Cold air flows from two ends to the middle, the air path is short, the wind resistance is small, the heat dissipation of the stator core and the rotor core is uniform, the air circulation is accelerated by the axial flow fan, the flow direction of media in the air pipe is not changed, and the heat dissipation effect is good.
Description
Technical Field
The invention relates to the field of generators, in particular to a generator with a fan.
Background
In a small and medium-sized synchronous generator, the heat dissipation design of a winding is a very important part of the design of the generator, and the heat dissipation effect of the winding directly influences the temperature rise of the winding and influences the reliability and the economy of the generator. The air-cooled generator is generally provided with a centrifugal fan at one end of a generator rotor, air enters the generator from one end of the generator through the fan, passes through a stator iron core, a stator ventilating plate, a stator winding, a rotor iron core and a rotor winding of the generator, and brings out heat generated by the generator from the other end of the generator, so that the purpose of heat dissipation of the stator winding and the rotor winding is achieved. The rotating speed of a rotor of the generator directly influences the ventilation and heat dissipation of the generator, and a low-rotating-speed generator adopts a common centrifugal fan, so that the heat dissipation air quantity is often insufficient. The high-speed generator adopts a common centrifugal fan, and the noise is often very loud. The variable speed generator cannot ensure that the heat dissipation air quantity remains unchanged.
The existing generator has the defects of long wind path, large wind resistance and uneven heat dissipation effect on the inner winding of the generator, and the common difference between the highest temperature and the lowest temperature of the winding of the generator is 30K to 40K.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the generator with the fan, so that the wind resistance of a wind path of the generator is reduced, and the heat dissipation in the generator is more uniform; the efficiency of ventilation cooling is improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a generator with a fan, which comprises a hood shell, wherein a stator core and a rotor core are arranged in the hood shell; air inlets are formed in two ends of the hood shell, an air outlet window is formed in the middle of the hood shell, and an axial flow fan is arranged on the air outlet window. The cold air flows from the two ends to the middle, the air path is short, the wind resistance is small, and the heat dissipation of the stator core and the rotor core is uniform.
The invention has the preferable technical scheme that two ends of the stator core are fixedly connected with the inner wall of the housing of the hood, and the rotor core is positioned in the stator core; and a stator ventilating plate is arranged in the middle of the stator core, so that air at the rotor core flows out to the air outlet window through the stator ventilating plate. The rotor core can form a better air circulation passage, and meanwhile, the heat of the stator core can be well taken away, so that the whole heat dissipation effect is good.
The invention has the preferable technical scheme that a plurality of ventilation channels are arranged on the stator ventilation plate along the radial direction. The stator winding is embedded in the stator iron core, and the rotor winding is wound on the rotor iron core; the number of the ventilation channels is matched with the number of the stator windings and the number of the rotor windings. On the premise of meeting the heat dissipation requirement, the number of the air channels is controlled, and the cost is reduced.
In a preferred embodiment of the present invention, a gap is provided between the stator core and the inner wall of the housing case. So that the air around the stator core can be better circulated.
The invention has the preferable technical scheme that a front end cover and a rear end cover are respectively arranged at two ends of the hood shell; the front end cover and the rear end cover are provided with a plurality of air inlet holes. The air inlet is convenient to enter from the two ends, the number of the air inlet holes needs to be controlled in a proper range, the air inlet amount at one end is not enough to support the air exhaust amount of the air outlet window, and the air inlet total amount at the two ends can be larger than the air exhaust amount of the air outlet window. So that the air path is short and the heat dissipation is good.
The invention preferably adopts the technical scheme that a power supply end of the axial flow fan is electrically connected with a power supply output end of the generator. The wind-driven generator is not influenced by the ventilation and heat dissipation of the generator by the rotating speed of the generator, the proper axial flow fan is selected to improve the wind quantity of the low-rotating-speed generator, reduce the noise of the high-rotating-speed generator and ensure the wind quantity of the variable-speed generator to be unchanged.
The preferable technical scheme of the invention is that the air outlet windows are symmetrically arranged at two sides of the middle part of the hood shell, the air outlet of the air outlet window is provided with a protection plate, and the protection plate is provided with a plurality of air outlet holes. The quantity of the air outlet holes is convenient for controlling the air outlet quantity.
In a preferred aspect of the present invention, a gap is provided between the rotor core and the stator core, and the rotor core is provided with a notch. The air circulation performance at the position of the rotor core is better, and the heat dissipation effect is better.
The invention has the beneficial effects that:
the invention provides a generator with a fan, which comprises a hood shell, wherein a stator core and a rotor core are arranged in the hood shell; air inlets are formed in two ends of the hood shell, an air outlet window is formed in the middle of the hood shell, and an axial flow fan is arranged on the air outlet window. Cold air flows from two ends to the middle, the air path is short, the wind resistance is small, the heat dissipation of the stator core and the rotor core is uniform, the air circulation is accelerated by the axial flow fan, the flow direction of media in the air pipe is not changed, and the heat dissipation effect is good.
Drawings
FIG. 1 is a schematic main sectional view of a generator with a fan according to an embodiment of the present invention;
FIG. 2 is a left side semi-sectional view of a generator with a fan according to an embodiment of the present invention;
FIG. 3 is a schematic top half-sectional view of a generator with a fan according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a portion a of fig. 2 according to an embodiment of the present invention.
In the figure:
1. an air outlet window; 2. a front end cover; 3. a stator winding; 4. a stator core; 5. an axial flow fan; 6. a stator vent plate; 7. a rotor core; 8. a rotor winding; 9. a hood housing; 10. a rear end cap; 11. a protection plate; 12. an air outlet; 21. an air inlet hole; 41. a notch; 61. an air duct.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
As shown in fig. 1 to 4, the generator with a fan provided in the present embodiment includes a hood housing 9, where a stator core 4 and a rotor core 7 are disposed inside the hood housing 9; air inlets are formed in two ends of the hood shell 9, an air outlet window 1 is formed in the middle of the hood shell 9, and an axial flow fan 5 is arranged on the air outlet window 1. The cold air flows from the two ends to the middle, the air path is short, the wind resistance is small, and the heat dissipation of the stator core 4 and the rotor core 7 is uniform. The traditional mode of radiating along the generator axial is changed, and the air inlet middle parts at the two ends are used for exhausting air, so that a better air path is formed, and the radiating effect is better. Cold air flows from two ends to the middle, the air path is short, the wind resistance is small, the heat dissipation of the stator core 4 and the rotor core 7 is uniform, the air circulation is accelerated by the axial flow fan 5, the flow direction of media in the air pipe is not changed, and the heat dissipation effect is good.
In order to enable the internal rotor core 7 to have a better heat dissipation effect, two ends of the stator core 4 are fixedly connected with the inner wall of the hood housing 9, and the rotor core 7 is positioned inside the stator core 4; and a stator ventilating plate 6 is arranged in the middle of the stator core 4, so that air at the rotor core 7 flows out to the air outlet window 1 through the stator ventilating plate 6. The rotor core 7 can form a better air circulation passage, and simultaneously can well take away the heat of the stator core 4, so that the whole heat dissipation effect is good.
Further, the stator ventilation board 6 is provided with a plurality of ventilation channels 61 in the radial direction. The stator winding 3 is embedded in the stator core 4, and the rotor winding 8 is wound on the rotor core 7; the number of the ventilation ducts 61 is matched with the number of the stator windings 3 and the rotor windings 8. On the premise of meeting the heat dissipation requirement, the number of the air channels 61 is controlled, and the cost is reduced.
Preferably, a gap is provided between the stator core 4 and an inner wall of the hood housing 9. So that the air around the stator core 4 can be better circulated. Air can flow from two ends to the middle, so that heat on the outer side of the stator core 4 can be well taken away.
Preferably, the front end cover 2 and the rear end cover 10 are respectively arranged at two ends of the hood shell 9; the front end cover 2 and the rear end cover 10 are both provided with a plurality of air inlet holes 21. The air is convenient to enter from the two ends, the number of the air inlet holes 21 needs to be controlled in a proper range, the air inlet amount at one end is not enough to support the air exhaust amount of the air outlet window 1, and the air inlet total amount at the two ends can be larger than the air exhaust amount of the air outlet window 1. So that the air path is short and the heat dissipation is good.
Preferably, the power end of the axial flow fan 5 is electrically connected with the power output end of the generator. The axial flow fan 5 can keep a relatively constant rotating speed, is not influenced by the rotating speed of the generator to ventilate and radiate the generator, and can improve the air quantity of the low-rotating-speed generator, reduce the noise of the high-rotating-speed generator and ensure the constant air quantity of the variable-speed generator.
Preferably, the air outlet windows 1 are symmetrically arranged on two sides of the middle part of the hood shell 9, a protection plate 11 is arranged at the air outlet of the air outlet window 1, and a plurality of air outlet holes 12 are formed in the protection plate 11. The quantity of the air outlet holes 12 is convenient for controlling the air outlet quantity.
Preferably, a gap is provided between the rotor core 7 and the stator core 4, and the rotor core 7 is provided with a notch 41. The air circulation at the position of the rotor core 7 is better, and the heat dissipation effect is better.
Welding the hood shell 9 by using a steel welding machine, and forming an air outlet window 1 in the middle of the hood shell 9; when the stator iron core 4 is laminated, the stator ventilation plate 6 is arranged in the middle of the stator iron core 4, so that radial air channels for stator ventilation are formed, and the number of the radial air channels is determined according to the heating loss of the stator winding 3 and the heating loss of the rotor winding 8; a laminated rotor core 7; embedding a stator winding 3 in a stator iron core 4, and winding a rotor winding 8 on a rotor iron core 7; selecting a proper axial flow fan 5 according to the heating loss condition of the generator, and installing the axial flow fan 5 on the air outlet window 1 of the hood shell 9; the front end cover 2 and the rear end cover 10 are provided with air inlet windows.
The flow direction of the cold air when the generator is running is shown by the arrow direction in fig. 1, 2 and 3. Cold air enters the generator from the two ends of the front end cover 2 and the rear end cover 10 and respectively contacts the end part of the stator winding 3, the inner surface and the outer surface of the stator core 4 and the middle air channel of the stator core 4, the outer surface of the rotor core 7, the end part and the surface of the rotor winding 8, and hot air is pumped out of the middle part of the housing shell 9 through the axial flow fan 5, so that the ventilation and heat dissipation requirements of the generator are met.
Because the wind enters from the front end cover 2 and the rear end cover 10 and two parallel mixed wind paths for discharging wind from the middle part of the hood shell 9 are adopted, the wind resistance of the wind paths of the generator is reduced, the heat dissipation in the generator is more uniform, and the heat dissipation effect of the generator is improved. Because the power supply output by the generator is utilized to supply power to the axial flow fan 5, the influence of the rotating speed of the generator on the ventilation and heat dissipation of the generator is avoided, the proper axial flow fan 5 is selected to improve the air quantity of the low-rotating-speed generator, reduce the noise of the high-rotating-speed generator and ensure the constant air quantity of the variable-speed generator.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.
Claims (9)
1. A generator with a fan comprises a hood shell (9), wherein a stator core (4) and a rotor core (7) are arranged in the hood shell (9); the method is characterized in that:
air inlets are formed in two ends of the hood shell (9), an air outlet window (1) is formed in the middle of the hood shell (9), and an axial flow fan (5) is arranged on the air outlet window (1).
2. The wind turbine generator of claim 1, wherein:
the two ends of the stator core (4) are fixedly connected with the inner wall of the hood shell (9), and the rotor core (7) is positioned in the stator core (4);
and a stator ventilating plate (6) is arranged in the middle of the stator core (4), so that air at the position of the rotor core (7) flows out to the air outlet window (1) through the stator ventilating plate (6).
3. The wind turbine generator of claim 2, wherein:
the stator ventilating plate (6) is provided with a plurality of ventilating channels (61) along the radial direction.
4. The wind turbine generator of claim 1, wherein:
a gap is arranged between the stator core (4) and the inner wall of the hood shell (9).
5. The wind turbine generator of claim 1, wherein:
a front end cover (2) and a rear end cover (10) are respectively arranged at two ends of the hood shell (9); the front end cover (2) and the rear end cover (10) are respectively provided with a plurality of air inlet holes (21).
6. The wind turbine generator of claim 1, wherein:
and the power end of the axial flow fan (5) is electrically connected with the power output end of the generator.
7. The generator with a wind turbine according to claim 1 or 2, characterized in that:
the air outlet window (1) is symmetrically arranged on two sides of the middle part of the hood shell (9), a protection plate (11) is arranged at the air outlet of the air outlet window (1), and a plurality of air outlet holes (12) are formed in the protection plate (11).
8. The wind turbine generator of claim 3, wherein:
a stator winding (3) is embedded in the stator core (4), and a rotor winding (8) is wound on the rotor core (7); the number of the ventilation channels (61) is matched with the number of the stator windings (3) and the number of the rotor windings (8).
9. The generator with a wind turbine according to claim 1 or 2, characterized in that:
a gap is arranged between the rotor core (7) and the stator core (4), and the rotor core (7) is provided with a notch (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010440079.5A CN111614184A (en) | 2020-05-22 | 2020-05-22 | Generator with fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010440079.5A CN111614184A (en) | 2020-05-22 | 2020-05-22 | Generator with fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111614184A true CN111614184A (en) | 2020-09-01 |
Family
ID=72205159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010440079.5A Pending CN111614184A (en) | 2020-05-22 | 2020-05-22 | Generator with fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111614184A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112821611A (en) * | 2021-04-19 | 2021-05-18 | 德阳市产品质量监督检验所 | Double-channel heat dissipation generator |
| CN116683700A (en) * | 2023-08-03 | 2023-09-01 | 山西电机制造有限公司 | Internal cooling air path optimizing structure of automobile chassis dynamometer motor |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030051382A (en) * | 2001-12-19 | 2003-06-25 | 가부시끼가이샤 히다치 세이사꾸쇼 | Rotary electrical machinery |
| CN1784818A (en) * | 2003-04-16 | 2006-06-07 | 西门子公司 | Electric machine having cooled metal laminated stator and rotor cores and windings |
| CN202737668U (en) * | 2012-08-31 | 2013-02-13 | 江苏清江电机制造有限公司 | Wind scooper of high-voltage motor |
| CN204118962U (en) * | 2014-08-21 | 2015-01-21 | 山西电机制造有限公司 | A kind of electric machine built-in deep bead and motor |
| CN106533037A (en) * | 2016-12-13 | 2017-03-22 | 国家电网公司 | Doubly-fed wind power generator |
| CN208820614U (en) * | 2018-06-13 | 2019-05-03 | 康富科技股份有限公司 | A kind of generator of multiple fans |
| CN110212700A (en) * | 2019-04-26 | 2019-09-06 | 西安中车永电捷力风能有限公司 | A kind of cooling air duct structure of doubly-fed wind turbine |
| CN212063670U (en) * | 2020-05-22 | 2020-12-01 | 康富科技有限公司 | Generator with fan |
-
2020
- 2020-05-22 CN CN202010440079.5A patent/CN111614184A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030051382A (en) * | 2001-12-19 | 2003-06-25 | 가부시끼가이샤 히다치 세이사꾸쇼 | Rotary electrical machinery |
| CN1784818A (en) * | 2003-04-16 | 2006-06-07 | 西门子公司 | Electric machine having cooled metal laminated stator and rotor cores and windings |
| CN202737668U (en) * | 2012-08-31 | 2013-02-13 | 江苏清江电机制造有限公司 | Wind scooper of high-voltage motor |
| CN204118962U (en) * | 2014-08-21 | 2015-01-21 | 山西电机制造有限公司 | A kind of electric machine built-in deep bead and motor |
| CN106533037A (en) * | 2016-12-13 | 2017-03-22 | 国家电网公司 | Doubly-fed wind power generator |
| CN208820614U (en) * | 2018-06-13 | 2019-05-03 | 康富科技股份有限公司 | A kind of generator of multiple fans |
| CN110212700A (en) * | 2019-04-26 | 2019-09-06 | 西安中车永电捷力风能有限公司 | A kind of cooling air duct structure of doubly-fed wind turbine |
| CN212063670U (en) * | 2020-05-22 | 2020-12-01 | 康富科技有限公司 | Generator with fan |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112821611A (en) * | 2021-04-19 | 2021-05-18 | 德阳市产品质量监督检验所 | Double-channel heat dissipation generator |
| CN116683700A (en) * | 2023-08-03 | 2023-09-01 | 山西电机制造有限公司 | Internal cooling air path optimizing structure of automobile chassis dynamometer motor |
| CN116683700B (en) * | 2023-08-03 | 2023-10-27 | 山西电机制造有限公司 | Internal cooling air path optimizing structure of automobile chassis dynamometer motor |
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