CN110867981A - Asynchronous motor slot wedge arrangement structure - Google Patents
Asynchronous motor slot wedge arrangement structure Download PDFInfo
- Publication number
- CN110867981A CN110867981A CN201911369576.4A CN201911369576A CN110867981A CN 110867981 A CN110867981 A CN 110867981A CN 201911369576 A CN201911369576 A CN 201911369576A CN 110867981 A CN110867981 A CN 110867981A
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- CN
- China
- Prior art keywords
- stator
- slot
- slot wedge
- sectional
- core
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- 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
Links
- 238000009423 ventilation Methods 0.000 claims abstract description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 15
- 230000011218 segmentation Effects 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 230000002708 enhancing effect Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
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- 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
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
-
- 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
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/48—Fastening of windings on the stator or rotor structure in slots
- H02K3/487—Slot-closing devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/08—Arrangements for cooling or ventilating by gaseous cooling medium circulating wholly within the machine casing
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses an asynchronous motor slot wedge arrangement structure, wherein a stator core is provided with a stator slot, the stator slot divides stator cores on two sides into a first core area and a second core area, and the wall of the stator slot of the first core area is provided with a slot wedge slot; the sectional slot wedges are of sectional structures, slot wedge protrusions matched with the slot wedge grooves are arranged on one side face of each sectional slot wedge, the length of each sectional slot wedge is slightly longer than the sum of the widths of the two sections of stator core baffles and the widths of the two stator core ventilation channels, the two sectional slot wedges are respectively clamped in the slot wedge grooves on the outermost sides of the two sides of the stator grooves, the two ends of the stator grooves are sealed, and other sectional slot wedges can be uniformly arranged in the stator grooves. The invention optimizes and improves the arrangement mode of the stator slot wedges and achieves the aim of enhancing the cooling effect of the motor.
Description
Technical Field
The invention relates to an asynchronous motor slot wedge arrangement structure used in the field of asynchronous motor production.
Background
Referring to fig. 1, for a motor, a stator core 1 is provided with a stator slot 11 for placing a stator coil, and a slot wedge 2 is arranged in the stator slot. Meanwhile, a stator core ventilation channel 12 is formed in the stator core, and the stator core ventilation channel 12 is formed by stator core baffles 13 on two sides. The stator core air duct 12 and the rotor air duct provided on the rotor together constitute an air duct system inside the motor.
Normally, a slot wedge 2 is used in the same stator slot 11 to close the slot opening of the stator slot 11 as a whole. However, in some cases, in order to enhance the radial ventilation performance inside the motor and make the ventilation airflow uniform and smooth, the stator core ventilation duct 12 and the rotor ventilation duct are designed in an asymmetric structure, and the stator core ventilation duct 12 and the rotor ventilation duct are arranged in a staggered manner, so that the ventilation airflow can circulate along the radial direction after being blocked. The step of closing the entire stator slot 11 with one slot wedge 2 will then hinder the cooling ventilation and impair the cooling effect.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an asynchronous motor slot wedge arrangement structure which optimizes and improves the stator slot wedge arrangement mode to achieve the aim of enhancing the motor cooling effect.
One technical scheme for achieving the above purpose is as follows: the utility model provides an asynchronous machine slot wedge arrangement structure, includes stator core, segmentation slot wedge and rotor, a plurality of stator core ventiduct have been seted up on the stator core, the stator core of stator core ventiduct both sides is called stator core and keeps off, a plurality of rotor ventiduct have been seted up on the rotor, the stator core ventiduct with the crisscross setting of rotor ventiduct, its characterized in that:
stator slots are formed in the stator iron core, the stator slots divide the stator iron core on two sides into a first iron core area and a second iron core area, and slot wedge slots are formed in the wall of the stator slot of the first iron core area;
the sectional slot wedges are of sectional structures, slot wedge protrusions matched with the slot wedge grooves are arranged on one side face of each sectional slot wedge, the length of each sectional slot wedge is slightly longer than the sum of the widths of the two sections of stator core baffles and the widths of the two stator core ventilation channels, and the two sectional slot wedges are respectively clamped in the slot wedge grooves on the outermost sides of the two sides of the stator grooves to seal the two ends of the stator grooves.
Furthermore, a plurality of sectional slot wedges are uniformly clamped in the middle of the stator slot.
The slot wedge arrangement structure of the asynchronous motor is applied to the layout structure of the asymmetric ventilation ducts of the stator and the rotor, and is arranged in a segmented mode in the same stator slot on the premise of ensuring the slot wedge fastening effect, a certain distance is kept between the slot wedges, so that the ventilation gap between the asymmetric ventilation ducts is unblocked as far as possible, the wind resistance of a cooling wind path inside the motor is effectively reduced, and the purpose of enhancing the cooling effect is achieved.
Drawings
Fig. 1 is a schematic structural diagram of an asynchronous motor slot wedge arrangement structure in the prior art;
fig. 2 is a schematic structural diagram of an arrangement structure of slot wedges of an asynchronous motor according to the present invention.
Detailed Description
In order to better understand the technical solution of the present invention, the following detailed description is made by specific examples:
referring to fig. 2, the slot wedge arrangement structure of an asynchronous motor according to the present invention is applied to a motor structure with stator and rotor air ducts arranged alternately, and includes a stator core 1, a segmented slot wedge 3, and a rotor 4. A plurality of stator core ventilation channels 12 are formed in the stator core 1, and the stator cores on two sides of the stator core ventilation channels are called stator core baffles 13. The rotor 4 is provided with a plurality of rotor ventilation ducts 41, and the stator core ventilation ducts 12 and the rotor ventilation ducts 41 are arranged in a staggered manner.
Stator slots are formed in the stator iron core 1, the stator slots divide the stator iron cores on two sides into a first iron core area and a second iron core area, and slotted wedge slots are formed in the wall of the stator slots in the first iron core area. The slot wedge slot is used for clamping the sectional slot wedge 3. The sectional slot wedge 3 is of a sectional structure, and because the sectional slot wedge 3 is short in length, in order to ensure that the sectional slot wedge can be kept fixed in the stator slot and cannot be displaced, a slot wedge protrusion matched with a slot wedge slot is arranged on one side surface of the sectional slot wedge 3. The length of each section of sectional slot wedge 3 is slightly longer than the sum of the widths of the two stator core baffles and the two stator core ventilation channels, and the two sectional slot wedges 3 are respectively clamped in the slot wedge grooves on the outermost sides of the two sides of the stator slot to seal the two ends of the stator slot. For small sized motors and stator coils, closing both ends of the stator slots is sufficient to secure the stator coils within the stator slots. If the size of the motor and the stator coil is large, the middle part of the stator slot is required to be evenly clamped with a plurality of sectional slot wedges 3, so that the added sectional slot wedges 3 are balanced in stress, and the stability of the stator coil is ensured. The final aim is to place the segmented slot wedges 3 in the same stator slot as few as possible on the premise of ensuring the fastening effect of the segmented slot wedges 3 according to the stress analysis result, and a certain distance is kept between the segmented slot wedges 3, so that the wind resistance of a cooling wind path inside the motor is effectively reduced, and the purpose of enhancing the cooling effect is achieved.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above described embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.
Claims (2)
1. The utility model provides an asynchronous machine slot wedge arrangement structure, includes stator core, segmentation slot wedge and rotor, a plurality of stator core ventiduct have been seted up on the stator core, the stator core of stator core ventiduct both sides is called stator core and keeps off, a plurality of rotor ventiduct have been seted up on the rotor, the stator core ventiduct with the crisscross setting of rotor ventiduct, its characterized in that:
stator slots are formed in the stator iron core, the stator slots divide the stator iron core on two sides into a first iron core area and a second iron core area, and slot wedge slots are formed in the wall of the stator slot of the first iron core area;
the sectional slot wedges are of sectional structures, slot wedge protrusions matched with the slot wedge grooves are arranged on one side face of each sectional slot wedge, the length of each sectional slot wedge is slightly longer than the sum of the widths of the two sections of stator core baffles and the widths of the two stator core ventilation channels, and the two sectional slot wedges are respectively clamped in the slot wedge grooves on the outermost sides of the two sides of the stator grooves to seal the two ends of the stator grooves.
2. The slot wedge arrangement structure of the asynchronous motor according to claim 1, wherein a plurality of the segmented slot wedges are uniformly clamped in the middle of the stator slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911369576.4A CN110867981B (en) | 2019-12-26 | 2019-12-26 | Slot wedge arrangement structure for asynchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911369576.4A CN110867981B (en) | 2019-12-26 | 2019-12-26 | Slot wedge arrangement structure for asynchronous motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110867981A true CN110867981A (en) | 2020-03-06 |
| CN110867981B CN110867981B (en) | 2024-05-14 |
Family
ID=69659502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911369576.4A Active CN110867981B (en) | 2019-12-26 | 2019-12-26 | Slot wedge arrangement structure for asynchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110867981B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114337015A (en) * | 2021-12-31 | 2022-04-12 | 华中科技大学 | High power density motor with stator immersion oil cooling structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88100727A (en) * | 1987-02-20 | 1988-08-31 | 西屋电气公司 | Wedge locking device in radially ventilated rotor |
| CN1119361A (en) * | 1994-06-28 | 1996-03-27 | Abb管理有限公司 | Layered plate body of stator of motor |
| JPH09285046A (en) * | 1996-04-08 | 1997-10-31 | Toshiba Corp | Dynamo-electric machine and its stator |
| JP2003018772A (en) * | 2001-06-29 | 2003-01-17 | Toshiba Corp | Rotary electric machine having air-cooled structure |
| CN102594026A (en) * | 2012-03-13 | 2012-07-18 | 肖富凯 | Motor employing immersion type evaporative cooling and structure optimization method thereof |
| CN211530868U (en) * | 2019-12-26 | 2020-09-18 | 上海电气集团上海电机厂有限公司 | Asynchronous motor slot wedge arrangement structure |
-
2019
- 2019-12-26 CN CN201911369576.4A patent/CN110867981B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88100727A (en) * | 1987-02-20 | 1988-08-31 | 西屋电气公司 | Wedge locking device in radially ventilated rotor |
| CN1119361A (en) * | 1994-06-28 | 1996-03-27 | Abb管理有限公司 | Layered plate body of stator of motor |
| JPH09285046A (en) * | 1996-04-08 | 1997-10-31 | Toshiba Corp | Dynamo-electric machine and its stator |
| JP2003018772A (en) * | 2001-06-29 | 2003-01-17 | Toshiba Corp | Rotary electric machine having air-cooled structure |
| CN102594026A (en) * | 2012-03-13 | 2012-07-18 | 肖富凯 | Motor employing immersion type evaporative cooling and structure optimization method thereof |
| CN211530868U (en) * | 2019-12-26 | 2020-09-18 | 上海电气集团上海电机厂有限公司 | Asynchronous motor slot wedge arrangement structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114337015A (en) * | 2021-12-31 | 2022-04-12 | 华中科技大学 | High power density motor with stator immersion oil cooling structure |
| CN114337015B (en) * | 2021-12-31 | 2023-07-25 | 华中科技大学 | High-power density motor with stator oil immersion cooling structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110867981B (en) | 2024-05-14 |
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