CN115360838A - Tooth yoke separation type counter-flow ventilation cooling system of large-scale scattered winding synchronous motor - Google Patents
Tooth yoke separation type counter-flow ventilation cooling system of large-scale scattered winding synchronous motor Download PDFInfo
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- CN115360838A CN115360838A CN202211148481.1A CN202211148481A CN115360838A CN 115360838 A CN115360838 A CN 115360838A CN 202211148481 A CN202211148481 A CN 202211148481A CN 115360838 A CN115360838 A CN 115360838A
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- tooth
- yoke
- synchronous motor
- cooling system
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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
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/14—Arrangements for cooling or ventilating wherein gaseous cooling medium circulates between the machine casing and a surrounding mantle
- H02K9/18—Arrangements for cooling or ventilating wherein gaseous cooling medium circulates between the machine casing and a surrounding mantle wherein the external part of the closed circuit comprises a heat exchanger structurally associated with the machine casing
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses a large-scale scattered winding synchronous motor tooth yoke separation type counter-flow ventilation cooling system, which relates to a large-scale turbo generator ventilation cooling system and aims to solve the problems that a traditional synchronous motor cooling mode is difficult in winding heat dissipation and tooth parts are easy to overheat. Yoke portion is equipped with a plurality of yoke portion air channels, is equipped with end structure spare at the both ends of yoke portion, and the equipartition is equipped with a plurality of yoke portion axial ventilation holes on yoke portion and end structure spare, and tooth portion is equipped with a plurality of tooth portion radial air channels, and is equipped with a plurality of tooth portion axial ventilation holes on the tooth portion, and stator core's top and below respectively are equipped with a first cooler, and second cooler and third cooler set up respectively in the rotor air inlet district department of pivot left and right both sides. The stator winding is transposed and uniformly dispersed in the tooth part ventilation channel. The invention can directly reduce the temperature of the tooth part and the temperature of the winding at the same time, and greatly improves the cooling capacity of the large synchronous motor.
Description
Technical Field
The invention relates to a ventilation cooling system of a large-scale turbonator, in particular to a tooth yoke separation type counter-flow ventilation cooling system of a large-scale bulk winding synchronous motor, and belongs to the technical field of electrical engineering.
Background
The large synchronous generator has high capacity, large size and high stator winding density, and can generate a large amount of heat in a stator core during operation. For a traditional large synchronous motor, a radial ventilation cooling mode of communicating stator core tooth yokes is generally adopted. However, because the yoke parts of the stator core teeth are in a communicated state, the cooling medium firstly flows through the yoke parts, is heated by the yoke parts and then flows to the tooth parts to cool the tooth parts, and the higher temperature of the yoke parts can cause larger temperature rise to the cooling medium, so that the subsequent cooling effect on the tooth parts is poor. In addition, the stator winding is in contact with the cooling medium in the ventilation channel in a small area, and the cooling medium cannot fully carry away heat generated by the stator winding, because the strands in the stator slot are densely distributed and the wrapped insulation has a large influence on heat dissipation.
Disclosure of Invention
The invention provides a tooth yoke separation type counter-flow ventilation cooling system of a large-scale dispersed winding synchronous motor, aiming at solving the problems that the cooling of a winding is difficult and a tooth part is easy to overheat in the traditional synchronous motor cooling mode.
The technical scheme adopted by the invention for solving the problems is as follows:
the stator comprises a stator core, end part structural members, a yoke part, a tooth part, a baffle, a rotating shaft and a plurality of coolers, wherein the stator core is sleeved on the rotating shaft and is divided into the yoke part and the tooth part from outside to inside, the yoke part is provided with a plurality of yoke part ventilation channels, the end part structural members are arranged at two ends of the yoke part, a plurality of yoke part axial ventilation holes are uniformly distributed in the yoke part and the end part structural members, the tooth part is provided with a plurality of tooth part radial ventilation channels, the tooth part is provided with a plurality of tooth part axial ventilation holes, the baffle is arranged between the yoke part and the tooth part, the upper part and the lower part of the stator core are respectively provided with a first cooler, and a second cooler and a third cooler are respectively arranged at rotor air inlet areas at the left side and the right side of the rotating shaft.
Furthermore, the large-scale bulk winding synchronous motor tooth yoke separation type counter-flow ventilation cooling system also comprises a stator winding and a cooling water pipe, wherein the stator winding is embedded in the stator iron core tooth part, and the cooling water pipe is embedded in the stator winding. The stator windings are transposed and uniformly dispersed in the radial ventilation channel of the tooth part, each layer of windings gradually moves downwards by one layer from top to bottom, and the windings on the uppermost layer move to the first layer. The number m of the radial ventilation grooves of the tooth part and the number q of the stator winding strands satisfy m/q = n, wherein n is an integer which is arbitrarily larger than 0.
Furthermore, the large-scale bulk winding synchronous motor tooth yoke separation type counter-flow ventilation cooling system further comprises a multistage axial fan and a centrifugal fan, wherein the multistage axial fan is arranged at one end of the rotating shaft, and the centrifugal fan is arranged at the other end of the rotating shaft.
Furthermore, the large-scale bulk winding synchronous motor tooth yoke separation type counter-flow ventilation cooling system further comprises a first partition plate, an air outlet area is arranged between the first partition plate and the end portion of the stator core, a rotor air inlet area is arranged between the partition plate and the shell, and channels are arranged at positions, close to the cooler, of the air outlet area and the rotor air inlet area.
Further, an air gap is arranged between the rotating shaft and the tooth part.
Furthermore, the tooth yoke separation type counter-flow ventilation cooling system of the large-scale bulk winding synchronous motor further comprises a second partition plate, the second partition plate is installed between the rotating shaft and the tooth part, and the second partition plate is located on the left side and the right side of the air gap.
The invention has the beneficial effects that:
1. according to the invention, the independent radial ventilation channels are respectively arranged on the yoke part and the tooth part of the stator core, and the yoke part and the tooth part are respectively and independently cooled, so that the problem that a cooling medium passing through the yoke part flows through the tooth part after being heated in a traditional yoke communicated cooling system is avoided, the problem of poor heat dissipation of the tooth part is solved, the purpose of reducing the temperature of the tooth part of the motor is realized, and the effect of reducing the radial temperature difference of the stator of the motor is further achieved;
2. the flow direction of the cooling medium is changed by additionally arranging a cooler and a partition plate, so that the flow directions of the cooling medium in the yoke part and the tooth part ventilating channels are opposite to each other, and a counter flow is formed;
3. the stator winding adopts a scattered transposition structure in the ventilation channel, so that the self circulation of the folded yarn caused by the uneven distribution of the leakage magnetic field in the stator slot can be effectively inhibited; on the other hand, the direct contact of the single strand with the cooling medium is realized, and the effect of the winding strand in the ventilation channel is greatly improved;
4. the generator integrally adopts an axial double-path air draft cooling structure, so that the problem of overlarge axial temperature difference of the traditional single-wind direction cooling mode is solved, and the effect of reducing the axial temperature difference is achieved;
5. by combining the points, the cooling structure provided by the invention can directly reduce the temperature of the tooth part and the temperature of the winding at the same time, and greatly improves the cooling capacity of the large synchronous motor.
Drawings
FIG. 1 is a schematic cross-sectional view of the overall structure of the present invention;
FIG. 2 is an axial cross-sectional view of a portion of a stator core; the air path flow direction of the part comprising the radial ventilation groove and the axial ventilation hole is included;
FIG. 3 is an axial view and a radial view of the windings in a fan duct with interspersed transposition;
fig. 4 is an axial cross-sectional view of a stator core, including radial ventilation grooves and axial ventilation holes to partially flow in an air passage.
In the figure: 1-a stator core; 2-end structural members; 3-a yoke; 3-1, ventilating a yoke part; 3-2 vent holes on the yoke part; 4-a tooth portion; 4-1 tooth part ventilating grooves; 4-2 tooth vents; 7-a baffle plate; 8-1 a first cooler; 8-2 a second cooler; 8-3 a third cooler; 9-rotor air inlet area; 10-1 multistage axial fan; 10-2 centrifugal fan; 11-a rotating shaft; 12-air outlet area; 13-an air gap; 14-a stator winding; 15-a water pipe; 16-a first separator; 16-1 a second separator; 17-a channel; 18-the ends of both sides of the generator; 19-machine shell.
Detailed Description
The first embodiment is as follows: the present embodiment is described with reference to fig. 1 to 4, and includes a stator core 1, an end structure 2, a yoke 3, a tooth 4, a baffle 7, a rotating shaft 11 and a plurality of coolers, where the stator core 1 is sleeved on the rotating shaft 11, the stator core 1 is divided into the yoke 3 and the tooth 4 from outside to inside, the yoke 3 is provided with a plurality of yoke ventilating slots 3-1, the end structure 2 is provided at both ends of the yoke 3, a plurality of yoke axial ventilating holes 3-2 are uniformly distributed on the yoke 3 and the end structure 2, the tooth 4 is provided with a plurality of tooth radial ventilating slots 4-1, the tooth 4 is provided with a plurality of tooth axial ventilating holes 4-2, the baffle 7 is provided between the yoke 3 and the tooth 4, the upper and lower portions of the stator core 1 are respectively provided with a first cooler 8-1, and the second cooler 8-2 and the third cooler 8-3 are respectively provided at rotor air inlet regions 9 at the left and right sides of the rotating shaft 11.
The baffle 7 is arranged at the junction of the yoke part 3 and the tooth part 4 of the stator core 1, and separates the radial ventilation channels of the yoke part 3 and the tooth part 4, so that the yoke part 3 and the tooth part 4 are independently cooled. Stator core 1 yoke portion 3 and tooth portion 4 all make the axial ventilation hole, and yoke portion 3 and end structure 2 go up the ventilation hole radius great, and tooth portion 4 ventilation hole radius is less.
The second embodiment is as follows: the present embodiment is described with reference to fig. 1 and 3, and the tooth yoke separation type counter-flow ventilation cooling system for a large-sized bulk winding synchronous motor according to the present embodiment further includes a stator winding 14 and a cooling water pipe 15, the stator winding 14 is embedded in the tooth 4 of the stator core 1, and the cooling water pipe 15 is embedded in the stator winding 14.
The cooling water flows in from one end of the cooling water pipe 15 to directly cool the stator winding 14 and then flows out from the other end. The stator windings 14 are transposed in the radial ventilation grooves 5-2 of the tooth portion 4, wherein the upper layer winding 14-1 and the lower layer winding 14-2 are transposed once when meeting one radial ventilation groove 5-2 from left to right along the axial direction, as shown in fig. 3, each layer of windings is gradually shifted down by one layer from top to bottom, and the uppermost layer of windings is shifted to the first layer. The number m of the radial ventilation grooves 5-2 arranged on the stator core 1 and the number q of the strands of the stator winding 14 meet the requirement that m/q = n, wherein n is an integer which is arbitrarily larger than 0. When the windings are transposed, each strand is uniformly dispersed in the ventilation trench, and the cooling effect of the cooling medium in the radial ventilation trench on the windings is improved in a mode of increasing the contact area of the strands and the cooling medium.
Other components and connections are the same as those in the first embodiment.
The third concrete implementation mode: the present embodiment is described with reference to fig. 1, and the tooth-yoke separation type counter-flow ventilation cooling system for a large-scale distributed winding synchronous motor according to the present embodiment further includes a multistage axial fan 10-1 and a centrifugal fan 10-2, wherein the multistage axial fan 10-1 is disposed at one end of a rotating shaft 11, and the centrifugal fan 10-2 is disposed at the other end of the rotating shaft 11.
The rotating shaft 11 is provided with a structure of connecting a multistage axial flow fan 10-1 and a centrifugal fan 10-2 in series. The multistage axial fan 10-1 is used for pumping out the cooling medium at the end parts 18 at the two sides of the generator, and then pressing the cooling medium into the air outlet area 12 through the pressurizing action of the centrifugal fan 10-2.
Other components are connected in the same manner as in the first or second embodiment.
The fourth concrete implementation mode: the present embodiment is described with reference to fig. 1, and the tooth yoke separation type counter flow ventilation cooling system of the large-scale bulk winding synchronous motor according to the present embodiment further includes a first partition plate 16-1, an air outlet area 12 is disposed between the first partition plate 16-1 and the end of the stator core 1, a rotor air inlet area 9 is disposed between the partition plate 16-1 and the casing 19, and a channel 17 is disposed at a position close to the cooler 8-1 in the air outlet area 12 and the rotor air inlet area 9.
The end part of the stator core 1, the air outlet area 12 and the rotor air inlet area 9 are isolated by the partition plate 16-1, wherein the air outlet area 12 and the rotor air inlet area 9 are provided with a channel 17 near the first cooler 8-1, the cooling medium in the air outlet area 12 is divided, one part of the cooling medium enters the cooler 8-1, and the other part of the cooling medium enters the rotor air inlet area 9.
Other components are connected in the same manner as in the first, second or third embodiment.
The fifth concrete implementation mode: in the present embodiment, an air gap 13 is provided between the rotary shaft 11 and the tooth 4, as described with reference to fig. 1.
The cooling medium in the radial ventilation channel 3-1 of the yoke part 3 of the stator core 1 flows in from a first cooler 8-1 above the stator core 1; the cooling medium in the radial ventilation channels 4-1 of the tooth parts 4 of the stator core 1 enters the air gap 13 from the cooling medium of the second cooler 8-2 and the third cooler 8-3 through the rotating shaft 1, the yoke parts 3 and the tooth parts 4 are cooled independently, the flow directions of the cooling medium are opposite, and counter flow is formed in the stator core 1.
The other components are connected in the same manner as in the first, second, third or fourth embodiment.
The sixth specific implementation mode is as follows: the present embodiment is described with reference to fig. 1, and the tooth-yoke separated-type counter-flow ventilation cooling system of the large-scale distributed winding synchronous motor according to the present embodiment further includes a second partition plate 16-2, the second partition plate 16-2 is installed between the rotating shaft 11 and the tooth portion 4, and the second partition plate 16-2 is located on the left and right sides of the air gap 13.
The air gap is separated from the two side end portions 18 by the second partition plate 16-2, and the cooling medium with lower temperature in the air gap 13 is prevented from being mixed with the cooling medium at the two side end portions 18 of the motor. A small gap is left between the partition plate 16-2 and the rotating shaft 11 to prevent friction between the rotating shaft 11 and the partition plate 16-2 when the motor rotates.
The other components are connected in the same manner as in the first, second, third, fourth or fifth embodiment.
The working principle is as follows:
as shown in figure 1 of the attached drawings of the specification, the end part of a stator iron core 1, an air outlet area 12 and a rotor air inlet area 9 are isolated by a partition plate 16, and a channel 17 is arranged at the air outlet area 12. At the moment, the cooling in the air outlet region 12 is performed in two flow directions, one part of the cooling medium directly flows back to the cooler 8-1, and enters the stator core 1 again after being cooled by the cooler, the other part of the cooling medium enters the cooler 8-2 and the cooler 8-3 in the rotor air inlet region 9 at two sides of the shaft rotation 11, the part of the cooling medium enters the rotating shaft 11 through the rotor air inlet region 9 after being cooled, the rotating shaft 11 enters the tooth part 4 of the stator core 1 through the air gap 13 in the radial direction after being cooled, and the radial ventilation channels 3-1 of the stator core yoke part 3 and the radial ventilation channels 4-1 of the stator core tooth part 4 flow in opposite directions to form counter flow. In order to prevent the cooling medium in the air gap 13 from mixing with the cooling medium at the two side ends 18 of the generator, a second clapboard 16-2 is additionally arranged at the air gap 13, the cooling medium entering the radial ventilation channels 4-1 of the tooth part 4 along the radial direction flows to the two side ends of the generator along with the axial ventilation holes 3-2 of the yoke part 3, and participates in the circulation of the cooling medium again under the pressure generated by the multistage fan 10.
Although the present invention has been described with reference to the preferred embodiments, 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 scope of the present invention.
Claims (6)
1. Large-scale formula synchronous machine tooth yoke separation type counterflow ventilation cooling system that looses, its characterized in that: the novel stator structure comprises a stator core (1), an end structural component (2), a yoke portion (3), a tooth portion (4), a baffle plate (7), a rotating shaft (11) and a plurality of coolers, wherein the stator core (1) is sleeved on the rotating shaft (11), the stator core (1) is divided into the yoke portion (3) and the tooth portion (4) from outside to inside, the yoke portion (3) is provided with a plurality of yoke portion ventilating channels (3-1), the end structural component (2) is arranged at two ends of the yoke portion (3), a plurality of yoke portion axial ventilating holes (3-2) are uniformly distributed on the yoke portion (3) and the end structural component (2), the tooth portion (4) is provided with a plurality of tooth portion radial ventilating channels (4-1), the tooth portion (4) is provided with a plurality of tooth portion axial ventilating holes (4-2), the baffle plate (7) is arranged between the yoke portion (3) and the tooth portion (4), the upper portion and the lower portion of the stator core (1) are respectively provided with a first cooler (8-1), and second cooler (8-2) and a third cooler (8-3) are respectively arranged at left side and right side portions (9) of the rotating shaft (11).
2. The large-scale dispersed winding synchronous motor tooth-yoke separation type counter-flow ventilation cooling system according to claim 1, characterized in that: the large-scale distributed winding synchronous motor tooth yoke separation type counter-flow ventilation cooling system further comprises stator windings (14) and cooling water pipes (15), wherein the stator windings (14) are embedded in the tooth parts (4) of the stator iron core (1), the cooling water pipes (15) are embedded in the stator windings (14), the stator windings (14) are transposed and uniformly dispersed in the tooth part radial ventilation grooves (4-1), each layer of windings gradually moves downwards by one layer from top to bottom, and the windings on the uppermost layer move to the first layer; the number m of the tooth radial ventilation grooves (4-1) and the number q of the stator winding (14) strands satisfy m/q = n, wherein n is an integer which is any number larger than 0.
3. The large-scale dispersed winding synchronous motor tooth-yoke separation type counter-flow ventilation cooling system according to claim 1, characterized in that: the tooth yoke separation type counter-flow ventilation cooling system of the large-scale bulk winding synchronous motor further comprises a multistage axial fan (10-1) and a centrifugal fan (10-2), wherein the multistage axial fan (10-1) is arranged at one end of the rotating shaft (11), and the centrifugal fan (10-2) is arranged at the other end of the rotating shaft (11).
4. The large-scale dispersed winding synchronous motor tooth-yoke separation type counter-flow ventilation cooling system according to claim 1, characterized in that: the large-scale bulk winding synchronous motor tooth yoke separation type counter-flow ventilation cooling system further comprises a first partition plate (16-1), an air outlet area (12) is arranged between the first partition plate (16-1) and the end portion of the stator iron core (1), a rotor air inlet area (9) is arranged between the partition plate (16-1) and the shell (19), and a channel (17) is arranged at the position, close to the cooler (8-1), of the air outlet area (12) and the rotor air inlet area (9).
5. The large-scale dispersed winding synchronous motor tooth-yoke separation type counter-flow ventilation cooling system according to claim 1, characterized in that: an air gap (13) is arranged between the rotating shaft (11) and the tooth part (4).
6. The large-scale dispersed winding synchronous motor tooth-yoke separation type counter-flow ventilation cooling system according to claim 5, characterized in that: the large-scale distributed winding synchronous motor tooth yoke separation type counter-flow ventilation cooling system further comprises a second partition plate (16-2), the second partition plate (16-2) is installed between the rotating shaft (11) and the tooth portion (4), and the second partition plate (16-2) is located on the left side and the right side of the air gap (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211148481.1A CN115360838B (en) | 2022-09-21 | 2022-09-21 | Gear yoke separation type counter-flow ventilation cooling system of large-scale bulk winding synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211148481.1A CN115360838B (en) | 2022-09-21 | 2022-09-21 | Gear yoke separation type counter-flow ventilation cooling system of large-scale bulk winding synchronous motor |
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| Publication Number | Publication Date |
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| CN115360838A true CN115360838A (en) | 2022-11-18 |
| CN115360838B CN115360838B (en) | 2023-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211148481.1A Active CN115360838B (en) | 2022-09-21 | 2022-09-21 | Gear yoke separation type counter-flow ventilation cooling system of large-scale bulk winding synchronous motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118432319A (en) * | 2024-07-02 | 2024-08-02 | 珠海格力电器股份有限公司 | Stator assembly, motor and household appliance |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064635A (en) * | 2011-01-12 | 2011-05-18 | 哈尔滨理工大学 | Steam turbine generator provided with axial-radial ventilating and cooling system |
| CN105308832A (en) * | 2013-04-03 | 2016-02-03 | Lc动力公司 | Liquid cooled stator for high efficiency machine |
| CN113014038A (en) * | 2021-03-11 | 2021-06-22 | 哈尔滨理工大学 | Novel two-side multistage counter-flow type axial-radial ventilation cooling system of half-speed steam turbine generator |
| CN113346678A (en) * | 2021-06-09 | 2021-09-03 | 哈尔滨理工大学 | Hybrid excitation turbogenerator with multi-stage axial flow-centrifugal ventilation cooling system |
-
2022
- 2022-09-21 CN CN202211148481.1A patent/CN115360838B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064635A (en) * | 2011-01-12 | 2011-05-18 | 哈尔滨理工大学 | Steam turbine generator provided with axial-radial ventilating and cooling system |
| CN105308832A (en) * | 2013-04-03 | 2016-02-03 | Lc动力公司 | Liquid cooled stator for high efficiency machine |
| CN113014038A (en) * | 2021-03-11 | 2021-06-22 | 哈尔滨理工大学 | Novel two-side multistage counter-flow type axial-radial ventilation cooling system of half-speed steam turbine generator |
| CN113346678A (en) * | 2021-06-09 | 2021-09-03 | 哈尔滨理工大学 | Hybrid excitation turbogenerator with multi-stage axial flow-centrifugal ventilation cooling system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118432319A (en) * | 2024-07-02 | 2024-08-02 | 珠海格力电器股份有限公司 | Stator assembly, motor and household appliance |
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| CN115360838B (en) | 2023-09-12 |
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