CN210958049U - Double-sided fan blade cooling structure of permanent magnet generator - Google Patents
Double-sided fan blade cooling structure of permanent magnet generator Download PDFInfo
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- CN210958049U CN210958049U CN201922442400.9U CN201922442400U CN210958049U CN 210958049 U CN210958049 U CN 210958049U CN 201922442400 U CN201922442400 U CN 201922442400U CN 210958049 U CN210958049 U CN 210958049U
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Abstract
The utility model relates to a double-sided fan blade cooling structure of a permanent magnet generator, which is arranged at the end part of a rotating shaft of the permanent magnet generator, which is close to an air inlet cover, and comprises a blade disc, a plurality of first fan blades arranged on one side of the blade disc, which is close to the air inlet cover, and a plurality of second fan blades arranged on the other side of the blade disc; the center of the blade disc is provided with a shaft hole which is sleeved with the rotating shaft, a plurality of first blades are uniformly fixed on the side surface of the blade disc around the center of the blade disc in a rotating direction, a plurality of second blades are uniformly fixed on the side surface of the blade disc in a rotating direction around the center of the blade disc, the rotating direction of the second blades is opposite to that of the first blades, and a plurality of ventilation holes are formed in the blade disc. The cooling structure can simultaneously cool heat generated by the stator and the rotor of the permanent magnet generator, improves the power generation quality of the generator in long-term operation, and ensures that the service life is reliably ensured.
Description
Technical Field
The utility model relates to a permanent magnet generator cooling fan technical field especially relates to a two-sided fan blade cooling structure of permanent magnet generator.
Background
The existing refrigerator car generally adopts a diesel engine to drive the permanent magnet generator 10 to operate, the refrigerator car outputs voltage through electromagnetic induction to supply power, and heat generated in the working process of the permanent magnet generator 10 is taken away through a cooling fan which operates coaxially.
The cooling fan of the permanent magnet generator 10 of the existing refrigerator car is a single-sided blade cooling structure 101, and specifically, referring to fig. 1, the single-sided blade cooling structure 101 can only cool heat generated by the stator core of the stator 20 part and the winding thereof in the working process, heat generated by the rotor core of the rotor 30 part and the excitation magnet in the working process is difficult to effectively cool, and the long-term working not only affects the stability of the power generation quality, but also affects the service life of the generator.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, an object of the utility model is to provide a two-sided fan blade cooling structure of permanent magnet generator, this cooling structure can cool off the heat that permanent magnet generator's stator and rotor part produced simultaneously, has improved the electricity generation quality in the generator long-term work to make life obtain reliable assurance.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a double-sided fan blade cooling structure of a permanent magnet generator is arranged at one end part of a rotating shaft of the permanent magnet generator, which is close to an air inlet cover, and comprises a blade disc, a plurality of first fan blades arranged on one side of the blade disc, which is close to the air inlet cover, and a plurality of second fan blades arranged on the other side of the blade disc; the center of the blade disc is provided with a shaft hole which is sleeved with the rotating shaft, a plurality of first blades are uniformly fixed on the side surface of the blade disc around the center of the blade disc in a rotating direction, a plurality of second blades are uniformly fixed on the side surface of the blade disc in a rotating direction around the center of the blade disc, the rotating direction of the second blades is opposite to that of the first blades, and a plurality of ventilation holes are formed in the blade disc.
Furthermore, the first fan blade is in a sheet shape, and the section parallel to the blade disc is in an arc shape.
Further, each first fan blade extends to the vicinity of the middle ring from the outer peripheral edge of the blade disc.
Furthermore, the outer ends of the first fan blades extend out of the edge of the blade disc, and an air outlet gap is formed between every two adjacent first fan blades.
Furthermore, the second fan blade is in a sheet shape, and the section parallel to the blade disc is in an arc shape.
Furthermore, each second fan blade extends to the vicinity of the middle ring from the vicinity of the shaft hole of the blade disc.
Furthermore, the outer end of the second fan blade is partially overlapped with the inner end of the first fan blade.
Furthermore, a plurality of ventilation holes are arranged on the blade disc between two adjacent first fan blades and gradually increase from the inner side close to the shaft hole to the outer side.
Furthermore, the number and the arrangement positions of the ventilation holes in the blade disc between every two adjacent first fan blades are the same as the sizes of the ventilation holes in all the positions.
Furthermore, the number of the first fan blades is larger than that of the second fan blades.
The utility model discloses following beneficial effect has:
the utility model discloses an air that first fan blade will be introduced from the air inlet cover leads the stator part from the space between air inlet cover and the fan blade, cool off stator core and winding, the part air of air inlet cover side enters into second fan blade side through the bleeder vent, lead to rotor part through revolving to the second fan blade opposite with first fan blade, cool off rotor core and excitation magnet, the problem of generating heat of stator and rotor has effectively been solved through two-sided fan blade structure, the electricity generation quality in the long-term work of generator has been improved, and make life obtain reliable assurance.
The first fan blade extends to the middle annular part from the peripheral edge of the blade disc, and the second fan blade extends to the middle annular part from the shaft hole, so that compared with the fan blade which extends to the shaft hole from the peripheral edge, the fan blade is easier to produce and process and reduces the production cost; open outside the bladed disk and establish the ventilative hole, make things convenient for the air to flow into the second fan blade side from the ventilative hole, set up the ventilative hole in the outside and improved cooling structure's structural strength, avoid because of the damage that the moment of torsion of trompil and pivot etc. lead to. Meanwhile, the second fan blade is arranged in the middle, so that the structural strength of the cooling structure is further improved. The ventilation holes which are uniformly arranged and the ventilation holes are sequentially increased from inside to outside, so that the weight is reduced, and the structural strength of each part of the blade disc is ensured.
Drawings
FIG. 1 is a schematic structural diagram of a conventional permanent magnet generator with a single-sided fan blade cooling structure;
fig. 2 is a schematic structural view of a permanent magnet generator with a double-sided fan blade cooling structure according to the present invention;
fig. 3 is a schematic structural view of a double-sided fan blade cooling structure of the present invention;
fig. 4 is a schematic structural view of a side face of the double-sided fan blade cooling structure of the present invention;
fig. 5 is a schematic structural view of another side surface of the double-sided fan blade cooling structure of the present invention.
Description of reference numerals:
10-a permanent magnet generator, 20-a stator, 30-a rotor, 40-a rotating shaft, 50-an air inlet cover, 101-a single-sided fan blade cooling structure, 100-a double-sided fan blade cooling structure, 1-a fan blade disc, 11-a shaft hole, 12-an outer peripheral edge, 13-a middle ring, 2-a first fan blade, 21-an air outlet notch, 3-a second fan blade and 4-a ventilation hole.
Detailed Description
The invention will be described in further detail with reference to the following drawings and specific embodiments:
referring to fig. 2 to 5, a double-sided fan blade cooling structure of a permanent magnet generator 100 is disposed at an end of a rotating shaft 40 of a permanent magnet generator 10 close to an air inlet cover 50. The double-sided fan blade cooling structure 100 comprises a fan blade disc 1, a plurality of first fan blades 2 arranged on one side of the fan blade disc 1 close to the air inlet cover 50 and a plurality of second fan blades 3 arranged on the other side of the fan blade disc 1.
The blade disc 1 is disc-shaped, and a shaft hole 11 sleeved with the rotating shaft 40 is formed in the center of the blade disc 1. The first fan blades 2 are in a sheet shape, the cross sections parallel to the blade disc 1 are arc-shaped, and the first fan blades 2 are uniformly fixed on the side face of the blade disc 1 around the center of the blade disc 1 in a rotating direction. Each first fan blade 2 is arranged between the outer peripheral edge 12 of the blade disc 1 and the middle ring 13, specifically, the inner end of each first fan blade 2 extends to the vicinity of the middle ring 13 of the blade disc 1, and the outer end of each first fan blade 2 extends to the outer peripheral edge 12 of the blade disc 1 and preferably extends out of the outer peripheral edge 12 of the blade disc 1, so that an air outlet gap 21 is formed between two adjacent first fan blades 2.
The second fan blades 3 are in a sheet shape, the cross sections parallel to the blade disc 1 are arc-shaped, the second fan blades 3 are uniformly fixed on the side face of the blade disc 1 around the center of the blade disc 1 in a consistent rotating direction, and the rotating direction of the second fan blades 3 is opposite to that of the first fan blades 2. Each second fan blade 3 is arranged between the shaft hole 11 and the middle ring 13 of the blade disc 1, specifically, the inner end of the second fan blade 3 extends to the vicinity of the shaft hole 11, and the outer end of the second fan blade 3 extends to the vicinity of the middle ring 13 of the blade disc 1 and is partially overlapped with the inner end of the first fan blade 2.
The blade disc 1 between two adjacent first blades 2 is densely provided with ventilation holes 4 gradually increasing from the inner side close to the shaft hole 11 to the outer side. Preferably, the number and the arrangement position of the ventilation holes 4 on the blade disc 1 between every two adjacent first fan blades 2 are the same as the size of the ventilation holes 4 on each position.
Further, the number of the first fan blades 2 is larger than that of the second fan blades 3. Specifically, the number of the first fan blades 2 is twice that of the second fan blades 3.
The principle of the double-sided fan blade cooling structure of the permanent magnet generator is as follows:
the double-sided fan blade cooling structure 100 is fixed on the rotating shaft 40 of the permanent magnet generator 10 and rotates synchronously with the rotating shaft 40. Air enters the interior of the permanent magnet generator 10 from the air inlet cover, is thrown outwards by rotating the first fan blades 2 close to the air inlet cover and flows to the position of the stator 20 through the space between the first fan blades 2 and the air inlet cover to cool the stator core and the winding of the permanent magnet generator 10; part of air enters the other side from the air inlet cover side through the air holes on the blade disc 1 and is inwards rolled to the position of the rotor 30 by the second reverse fan blade 3 to cool the rotor iron core and the excitation magnet; the air then flows into the front of the permanent magnet generator 10 through the gap between the stator 20 and the rotor 30 and out through the air outlet at the front.
The above only is the detailed implementation manner of the present invention, not limiting the patent scope of the present invention, all the equivalent structure changes made in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. The utility model provides a two-sided fan blade cooling structure of permanent magnet generator, two-sided fan blade cooling structure (100) set up the one end tip that is close to air inlet cover (50) in pivot (40) of permanent magnet generator (10), its characterized in that: the double-sided fan blade cooling structure comprises a fan blade disc (1), a plurality of first fan blades (2) arranged on one side of the fan blade disc (1) close to the air inlet cover (50) and a plurality of second fan blades (3) arranged on the other side of the fan blade disc (1); the center of the blade disc (1) is provided with a shaft hole (11) which is sleeved with a rotating shaft (40), a plurality of first blades (2) are uniformly fixed on the side surface of the blade disc (1) in a rotating direction around the center of the blade disc (1), a plurality of second blades (3) are uniformly fixed on the side surface of the blade disc (1) in a rotating direction around the center of the blade disc (1), the rotating direction of the second blades (3) is opposite to that of the first blades (2), and a plurality of ventilation holes (4) are formed in the blade disc (1).
2. The double-sided fan blade cooling structure of the permanent magnet generator as claimed in claim 1, wherein: the first fan blade (2) is in a sheet shape, and the section parallel to the blade disc (1) is in an arc shape.
3. The double-sided fan blade cooling structure of the permanent magnet generator as claimed in claim 1, wherein: each first fan blade (2) extends from the outer peripheral edge (12) of the blade disc (1) to the vicinity of the middle ring (13).
4. The double-sided fan blade cooling structure of the permanent magnet generator as claimed in claim 3, wherein: the outer ends of the first fan blades (2) extend out of the edge of the blade disc (1), and an air outlet gap (21) is formed between the outer ends of two adjacent first fan blades (2).
5. The double-sided fan blade cooling structure of the permanent magnet generator as claimed in claim 1, wherein: the second fan blade (3) is in a sheet shape, and the section parallel to the blade disc (1) is in an arc shape.
6. The double-sided fan blade cooling structure of the permanent magnet generator as claimed in claim 3, wherein: each second fan blade (3) extends from the position near the shaft hole (11) of the blade disc (1) to the position near the middle ring (13).
7. The double-sided fan blade cooling structure of the permanent magnet generator as claimed in claim 6, wherein: the outer end of the second fan blade (3) is partially overlapped with the inner end of the first fan blade (2).
8. The double-sided fan blade cooling structure of the permanent magnet generator as claimed in claim 1, wherein: the plurality of ventilation holes (4) are arranged on the blade disc (1) between two adjacent first fan blades (2) and gradually increase from the inner side close to the shaft hole (11) to the outer side.
9. The double-sided fan blade cooling structure of the permanent magnet generator as claimed in claim 8, wherein: the number and the arrangement positions of the ventilation holes (4) on the blade disc (1) between every two adjacent first fan blades (2) are the same as the sizes of the ventilation holes (4) on all positions.
10. The double-sided fan blade cooling structure of the permanent magnet generator as claimed in claim 1, wherein: the number of the first fan blades (2) is more than that of the second fan blades (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922442400.9U CN210958049U (en) | 2019-12-30 | 2019-12-30 | Double-sided fan blade cooling structure of permanent magnet generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922442400.9U CN210958049U (en) | 2019-12-30 | 2019-12-30 | Double-sided fan blade cooling structure of permanent magnet generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210958049U true CN210958049U (en) | 2020-07-07 |
Family
ID=71395676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922442400.9U Active CN210958049U (en) | 2019-12-30 | 2019-12-30 | Double-sided fan blade cooling structure of permanent magnet generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210958049U (en) |
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2019
- 2019-12-30 CN CN201922442400.9U patent/CN210958049U/en active Active
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