CN210350873U - Heat dissipation device for reducing axial temperature of stator - Google Patents
Heat dissipation device for reducing axial temperature of stator Download PDFInfo
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- CN210350873U CN210350873U CN201921429242.7U CN201921429242U CN210350873U CN 210350873 U CN210350873 U CN 210350873U CN 201921429242 U CN201921429242 U CN 201921429242U CN 210350873 U CN210350873 U CN 210350873U
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Abstract
The utility model discloses a reduce heat abstractor of stator axial temperature belongs to generator technical field, including rotor core and rotor frame, be fixed with a plurality of rotor magnet steels, its characterized in that on the rotor core: the stator core comprises a plurality of iron core sections, a stator air channel is arranged between any two adjacent iron core sections, the iron core sections are connected through the penetrating screw, the first stator pressing plate and the second stator pressing plate are fixedly connected with the axial ring plate, the iron core sections are fixedly connected with a circumferential ring plate, the circumferential ring plate is fixedly connected with the axial ring plate, and a gap is formed between the stator core and the rotor core. The utility model discloses do not exert an influence to motor body structural design, and simple structure, easy to carry out, can effectively reduce the motor axial difference in temperature, have good radiating effect.
Description
Technical Field
The utility model relates to generator technical field especially relates to a reduce heat abstractor of stator axial temperature.
Background
For large rotating electrical machines, it is very common to arrange a certain number of ventilation channels in the stator for cooling the stator coils and the core. Different flow patterns can be formed in cooperation with other structures. The air flow is divided from the air gap to the stator air duct, and the air flow is the same as the flow in most cases in the motor and is called positive flow; the air flow from the stator ducts converges to the air gap, counter to the flow prevailing in the machine, known as counterflow.
For the actual structure of the motor, the general space of the back of the air duct is large, it can be considered that the pressure is kept unchanged, for the air gap, the electromagnetic design of the motor usually causes the flowing space to be very limited, and the pressure change in the air gap space is very complex due to the continuous separation or convergence of the air flow along the axial direction of the air gap.
The research shows that: in both the positive flow mode and the reverse flow mode, the velocity distribution in the stator air duct is easily uneven as long as the maximum resultant velocity of the air gap reaches more than 30m/s, so that a stator coil or an iron core has a large temperature difference in the axial direction. The main technical solution at present adopts the ladder tooth structure for stator side section iron core, and what be exactly will lean on several sections of iron core internal diameters of tip to do is big than other sections yet to increase the air gap area of overflowing, reduce the maximum speed of air gap, thereby improve stator wind channel wind speed and coil, the homogeneity of iron core temperature axial distribution, however, side section iron core structure plays crucial effect to iron core section axial compression, side section iron core sets up ladder tooth structure and can produce adverse effect to the iron core degree of compressing tightly.
Chinese patent publication No. CN 207559785U, published as 2018, 06, 29, discloses a motor with a stator having a wind slot, which comprises a base, a stator and a rotor, wherein a radial stator wind channel is arranged on the outer surface of the stator, and a coil and a slot wedge are mounted in a punching sheet cavity of the stator, and is characterized in that: the slot wedge is equipped with the slot wedge clearance with the interior anchor ring of stator, one side of frame is equipped with air intake and air outlet, the stator clamp plate is installed to the tip of stator, stator clamp plate and frame fixed connection are equipped with a plurality of ventilation holes on the stator clamp plate, be equipped with the annular slab between the tip of rotor and the frame, annular slab, stator and stator clamp plate divide into water conservancy diversion cavity I and water conservancy diversion cavity II with the inner chamber of frame, water conservancy diversion cavity I communicates through ventilation hole, stator wind ditch, stator rotor air gap and slot wedge clearance with water conservancy diversion cavity II.
This motor of stator band ventilation notch disclosed in patent document is owing to structural design is not good enough, influences motor body structure easily, and the implementation degree of difficulty is big, and the radiating effect is not good enough.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome above-mentioned prior art's defect, provide a heat abstractor who reduces stator axial temperature, the utility model discloses do not produce the influence to motor body structural design, and simple structure, easy to carry out, can effectively reduce the motor axial difference in temperature, have good radiating effect.
The utility model discloses a following technical scheme realizes:
the utility model provides a reduce stator axial temperature's heat abstractor, includes rotor core and rotor frame, and rotor core installs on rotor frame, is fixed with a plurality of rotor magnet steel on the rotor core, and a plurality of rotor magnet steel arrange along rotor core's axial, its characterized in that: the stator core comprises a plurality of iron core sections, a stator air channel is arranged between any two adjacent iron core sections, the iron core sections are connected through the penetrating screw rods, one end of the penetrating screw rod is fixedly connected with the first stator pressing plate, the other end of the penetrating screw rod is fixedly connected with the second stator pressing plate, the first stator pressing plate and the second stator pressing plate are fixedly connected with the axial ring plate, the iron core sections are fixedly connected with circumferential ring plates, the circumferential ring plates are fixedly connected with the axial ring plates, and a gap is formed between the stator core and the rotor core.
The iron core segment comprises a plurality of iron core punching sheets, the iron core segment is formed by alternately stacking the iron core punching sheets, and grooves for placing stator coils are formed in the iron core punching sheets.
The included angle between the circumferential annular plate and the axial annular plate is 85-95 degrees.
The axial ring plate is cylindrical.
The axial ring plate is in a circular truncated cone shape with a small end part and a large middle part.
The axial ring plate is in a circular truncated cone shape with a large end part and a small middle part.
The working principle of the utility model is as follows:
through fixed connection axial ring board between first stator clamp plate and second stator clamp plate, fixed connection circumference ring board on the section of unshakable in one's determination, circumference ring board and axial ring board fixed connection, make motor stator core back space become with the clearance that sets up between stator core and the rotor core flow space that is comparable, and then make the air current have the flow the same at same axial position in clearance and motor stator core back space, the characteristic opposite in flow direction, reach the clearance and motor stator core back space same axial position dynamic pressure size keep being approximately equal, the static pressure difference maintains the definite value, the purpose that stator wind channel axial wind speed is even relatively, thereby provide the advantage for the axial evenly distributed of stator coil and iron core temperature.
The beneficial effects of the utility model are mainly expressed in the following aspect:
1. the utility model discloses, "stator core includes a plurality of sections unshakable in one's determination, is provided with the stator wind ditch between two arbitrary adjacent sections unshakable in one's determination, and a plurality of sections unshakable in one's determination are connected through the screw rod of punching, the one end and the first stator clamp plate fixed connection of screw rod of punching, other end and second stator clamp plate fixed connection, fixed connection between first stator clamp plate and the second stator clamp plate axial crown plate, fixedly connected with circumference crown plate in the section unshakable in one's determination, circumference crown plate and axial crown plate fixed connection are provided with the clearance between stator core and the rotor core, adopt this kind of structure, compared with prior art, do not produce the influence to motor body structural design, and simple structure, easy to carry out, can effectively reduce the motor axial difference in temperature, have good radiating effect.
2. The utility model discloses, the section of unshakable in one's determination includes a plurality of iron core towards the piece, and a plurality of iron core towards the piece and pile up in turn and form unshakable in one's determination section, open the recess that is used for placing stator coil towards the piece on, make simply, easy to carry out, it is low to maintain the replacement cost.
3. The utility model discloses, the contained angle between circumference crown plate and the axial crown plate is 85-95, adopts this kind of specific arrangement, and the clearance that reaches that can be better keeps approximately equal with the same axial position dynamic pressure size in motor stator core back space, and the fixed value is maintained to the static pressure difference, the even purpose of stator wind channel axial wind speed relatively to can carry out even heat dissipation for stator coil and iron core.
4. The utility model discloses, the axial crown plate is the cylinder tube-shape, not only can ensure good radiating effect, simple structure moreover, easily makes, can reduce the motor temperature rise and reach 10K.
5. The utility model discloses, axial crown plate is the tip little, the middle big round platform shape, can further improve the radiating effect, obviously reduces the motor axial difference in temperature and reaches 10-15K.
6. The utility model discloses, axial ring board is the tip big, the middle little round platform shape, can reduce the motor axial difference in temperature and reach 10-15K, has excellent radiating effect.
Drawings
The invention will be further described with reference to the accompanying drawings and specific embodiments, wherein:
fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the iron core segment of the present invention;
the labels in the figure are: 1. the stator comprises a rotor core, 2, a rotor base, 3, rotor magnetic steel, 4, a stator core, 5, a first stator pressing plate, 6, a second stator pressing plate, 7, a penetrating screw, 8, an axial ring plate, 9, an iron core section, 10, a stator air duct, 11, a circumferential ring plate, 12, a gap, 13, an iron core punching sheet, 14 and a groove.
Detailed Description
Example 1
Referring to fig. 1 and 2, a heat dissipation device for reducing the axial temperature of a stator comprises a rotor core 1 and a rotor base 2, wherein the rotor core 1 is mounted on the rotor base 2, a plurality of rotor magnetic steels 3 are fixed on the rotor core 1, the plurality of rotor magnetic steels 3 are arranged along the axial direction of the rotor core 1, the heat dissipation device further comprises a stator core 4, a first stator pressing plate 5, a second stator pressing plate 6, a feed-through screw 7 and an axial ring plate 8, the stator core 4 comprises a plurality of core sections 9, a stator air duct 10 is arranged between any two adjacent core sections 9, the plurality of core sections 9 are connected through the feed-through screw 7, one end of the feed-through screw 7 is fixedly connected with the first stator pressing plate 5, the other end of the feed-through screw is fixedly connected with the second stator pressing plate 6, the axial ring plate 8 is fixedly connected between the first stator pressing plate 5 and the second stator pressing plate 6, the circumferential ring plate 11 is fixedly connected on the core sections 9, the circumferential ring plate 11 is fixedly connected with the axial ring plate 8, and a gap 12 is arranged between the stator core 4 and the rotor core 1.
The stator core comprises a plurality of core sections, a stator air channel is arranged between any two adjacent core sections, the core sections are connected through a penetrating screw, one end of the penetrating screw is fixedly connected with a first stator pressing plate, the other end of the penetrating screw is fixedly connected with a second stator pressing plate, the first stator pressing plate and the second stator pressing plate are fixedly connected with an axial ring plate, a circumferential ring plate is fixedly connected to each core section, the circumferential ring plate is fixedly connected with the axial ring plate, and a gap is formed between the stator core and the rotor core.
Example 2
Referring to fig. 1 and 2, a heat dissipation device for reducing the axial temperature of a stator comprises a rotor core 1 and a rotor base 2, wherein the rotor core 1 is mounted on the rotor base 2, a plurality of rotor magnetic steels 3 are fixed on the rotor core 1, the plurality of rotor magnetic steels 3 are arranged along the axial direction of the rotor core 1, the heat dissipation device further comprises a stator core 4, a first stator pressing plate 5, a second stator pressing plate 6, a feed-through screw 7 and an axial ring plate 8, the stator core 4 comprises a plurality of core sections 9, a stator air duct 10 is arranged between any two adjacent core sections 9, the plurality of core sections 9 are connected through the feed-through screw 7, one end of the feed-through screw 7 is fixedly connected with the first stator pressing plate 5, the other end of the feed-through screw is fixedly connected with the second stator pressing plate 6, the axial ring plate 8 is fixedly connected between the first stator pressing plate 5 and the second stator pressing plate 6, the circumferential ring plate 11 is fixedly connected on the core sections 9, the circumferential ring plate 11 is fixedly connected with the axial ring plate 8, and a gap 12 is arranged between the stator core 4 and the rotor core 1.
The iron core section 9 comprises a plurality of iron core punching sheets 13, the iron core sections 9 are formed by alternately stacking the iron core punching sheets 13, and grooves 14 for placing stator coils are formed in the iron core punching sheets 13.
The included angle between the circumferential ring plate 11 and the axial ring plate 8 is 85 degrees.
The axial ring plate 8 is in a circular truncated cone shape with a large end part and a small middle part.
The axial ring plate is in a round table shape with large end part and small middle part, can reduce the axial temperature difference of the motor to 10-15K, and has excellent heat dissipation effect.
Example 3
Referring to fig. 1 and 2, a heat dissipation device for reducing the axial temperature of a stator comprises a rotor core 1 and a rotor base 2, wherein the rotor core 1 is mounted on the rotor base 2, a plurality of rotor magnetic steels 3 are fixed on the rotor core 1, the plurality of rotor magnetic steels 3 are arranged along the axial direction of the rotor core 1, the heat dissipation device further comprises a stator core 4, a first stator pressing plate 5, a second stator pressing plate 6, a feed-through screw 7 and an axial ring plate 8, the stator core 4 comprises a plurality of core sections 9, a stator air duct 10 is arranged between any two adjacent core sections 9, the plurality of core sections 9 are connected through the feed-through screw 7, one end of the feed-through screw 7 is fixedly connected with the first stator pressing plate 5, the other end of the feed-through screw is fixedly connected with the second stator pressing plate 6, the axial ring plate 8 is fixedly connected between the first stator pressing plate 5 and the second stator pressing plate 6, the circumferential ring plate 11 is fixedly connected on the core sections 9, the circumferential ring plate 11 is fixedly connected with the axial ring plate 8, and a gap 12 is arranged between the stator core 4 and the rotor core 1.
The iron core section 9 comprises a plurality of iron core punching sheets 13, the iron core sections 9 are formed by alternately stacking the iron core punching sheets 13, and grooves 14 for placing stator coils are formed in the iron core punching sheets 13.
The included angle between the circumferential ring plate 11 and the axial ring plate 8 is 90 degrees.
The axial ring plate 8 is cylindrical.
In another preferred embodiment, the axial ring plate has a cylindrical shape, which not only ensures a good heat dissipation effect, but also has a simple structure and is easy to manufacture, and the temperature rise of the motor can be reduced to 10K.
Example 4
Referring to fig. 1 and 2, a heat dissipation device for reducing the axial temperature of a stator comprises a rotor core 1 and a rotor base 2, wherein the rotor core 1 is mounted on the rotor base 2, a plurality of rotor magnetic steels 3 are fixed on the rotor core 1, the plurality of rotor magnetic steels 3 are arranged along the axial direction of the rotor core 1, the heat dissipation device further comprises a stator core 4, a first stator pressing plate 5, a second stator pressing plate 6, a feed-through screw 7 and an axial ring plate 8, the stator core 4 comprises a plurality of core sections 9, a stator air duct 10 is arranged between any two adjacent core sections 9, the plurality of core sections 9 are connected through the feed-through screw 7, one end of the feed-through screw 7 is fixedly connected with the first stator pressing plate 5, the other end of the feed-through screw is fixedly connected with the second stator pressing plate 6, the axial ring plate 8 is fixedly connected between the first stator pressing plate 5 and the second stator pressing plate 6, the circumferential ring plate 11 is fixedly connected on the core sections 9, the circumferential ring plate 11 is fixedly connected with the axial ring plate 8, and a gap 12 is arranged between the stator core 4 and the rotor core 1.
The iron core section 9 comprises a plurality of iron core punching sheets 13, the iron core sections 9 are formed by alternately stacking the iron core punching sheets 13, and grooves 14 for placing stator coils are formed in the iron core punching sheets 13.
The included angle between the circumferential ring plate 11 and the axial ring plate 8 is 95 degrees.
The axial ring plate 8 is in a circular truncated cone shape with a small end part and a large middle part.
In another preferred embodiment, the axial ring plate is in the shape of a circular truncated cone with a small end and a large middle, so that the heat dissipation effect can be further improved, and the axial temperature difference of the motor can be obviously reduced to 10-15K.
Claims (6)
1. The utility model provides a reduce heat abstractor of stator axial temperature, includes rotor core (1) and rotor frame (2), and rotor core (1) is installed on rotor frame (2), is fixed with a plurality of rotor magnet steel (3) on rotor core (1), and a plurality of rotor magnet steel (3) are arranged along the axial of rotor core (1) and are arranged its characterized in that: also comprises a stator iron core (4), a first stator pressing plate (5), a second stator pressing plate (6), a penetrating screw rod (7) and an axial ring plate (8), the stator iron core (4) comprises a plurality of iron core sections (9), a stator air duct (10) is arranged between any two adjacent iron core sections (9), the iron core sections (9) are connected through a feed-through screw (7), one end of the feed-through screw (7) is fixedly connected with the first stator pressing plate (5), the other end is fixedly connected with the second stator pressing plate (6), the axial ring plate (8) is fixedly connected between the first stator pressing plate (5) and the second stator pressing plate (6), the iron core section (9) is fixedly connected with a circumferential annular plate (11), the circumferential annular plate (11) is fixedly connected with an axial annular plate (8), a gap (12) is arranged between the stator core (4) and the rotor core (1).
2. The heat sink for reducing the axial temperature of the stator according to claim 1, wherein: the iron core segment (9) comprises a plurality of iron core punching sheets (13), the iron core segment (9) is formed by alternately stacking the iron core punching sheets (13), and grooves (14) for placing stator coils are formed in the iron core punching sheets (13).
3. The heat sink for reducing the axial temperature of the stator according to claim 1, wherein: the included angle between the circumferential annular plate (11) and the axial annular plate (8) is 85-95 degrees.
4. The heat sink for reducing the axial temperature of the stator according to claim 1, wherein: the axial ring plate (8) is cylindrical.
5. The heat sink for reducing the axial temperature of the stator according to claim 1, wherein: the axial ring plate (8) is in a circular truncated cone shape with a small end part and a large middle part.
6. The heat sink for reducing the axial temperature of the stator according to claim 1, wherein: the axial ring plate (8) is in a circular truncated cone shape with a large end part and a small middle part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921429242.7U CN210350873U (en) | 2019-08-30 | 2019-08-30 | Heat dissipation device for reducing axial temperature of stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921429242.7U CN210350873U (en) | 2019-08-30 | 2019-08-30 | Heat dissipation device for reducing axial temperature of stator |
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| Publication Number | Publication Date |
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| CN210350873U true CN210350873U (en) | 2020-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921429242.7U Active CN210350873U (en) | 2019-08-30 | 2019-08-30 | Heat dissipation device for reducing axial temperature of stator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110504771A (en) * | 2019-08-30 | 2019-11-26 | 东方电气集团东方电机有限公司 | It is a kind of for improving the device of stator shaft orientation temperature distribution evenness |
-
2019
- 2019-08-30 CN CN201921429242.7U patent/CN210350873U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110504771A (en) * | 2019-08-30 | 2019-11-26 | 东方电气集团东方电机有限公司 | It is a kind of for improving the device of stator shaft orientation temperature distribution evenness |
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