CN114421712A - Oil cooling motor stator end winding oil spout cooling body - Google Patents
Oil cooling motor stator end winding oil spout cooling body Download PDFInfo
- Publication number
- CN114421712A CN114421712A CN202111581503.9A CN202111581503A CN114421712A CN 114421712 A CN114421712 A CN 114421712A CN 202111581503 A CN202111581503 A CN 202111581503A CN 114421712 A CN114421712 A CN 114421712A
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- Prior art keywords
- oil
- connecting pipe
- end winding
- ring
- lock head
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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.)
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Links
- 238000004804 winding Methods 0.000 title claims abstract description 64
- 238000001816 cooling Methods 0.000 title claims abstract description 59
- 238000002347 injection Methods 0.000 claims abstract description 45
- 239000007924 injection Substances 0.000 claims abstract description 45
- 239000007921 spray Substances 0.000 claims description 11
- 238000005507 spraying Methods 0.000 abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 4
- 239000000446 fuel Substances 0.000 description 8
- 238000007789 sealing Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses an oil cooling motor stator end winding oil spraying cooling mechanism which comprises a motor shell and a stator iron core arranged in the motor shell, wherein end windings are arranged at two ends of the stator iron core; the oil injection part is provided with a connecting pipe used for being connected with an oil inlet pipe, the connecting pipe penetrates through the motor shell, one end of the oil inlet pipe is provided with a connecting piece matched with the connecting pipe, the connecting piece is cylindrical, and a detachable connecting mechanism is arranged between the connecting piece and the connecting pipe. According to the invention, the cooling mechanism of the traditional oil-cooled motor is improved and optimized, so that the upper half part and the lower half part of the end winding can be well cooled, and the running efficiency of the motor is improved.
Description
Technical Field
The invention relates to a cooling mechanism, in particular to an oil-spraying cooling mechanism for an end winding of a stator of an oil-cooled motor.
Background
The existing motor comprises a motor shell, a stator core is fixedly arranged in the motor shell, end windings are arranged at two ends of the stator core, and the end windings can generate heat when the motor runs, so that the end windings need to be cooled. In the existing cold oil motor, an end winding is cooled in an oil injection mode. As shown in fig. 6, the cooling mechanism in the existing oil-cooled motor mainly includes an oil injection component 4 disposed in a motor housing 1, the oil injection component 4 is annular, the oil injection component 4 is disposed around the outside of an end winding 3, an annular oil cavity 5 is disposed in the oil injection component 4, a plurality of oil injection holes 6 communicated with the oil cavity are disposed on the inside of the oil injection component 4, the oil injection holes 6 are uniformly distributed on the inside of the oil injection component 4, a connecting pipe 7 is disposed on the oil injection component 4, the connecting pipe 7 is communicated with the oil cavity in the oil injection component 4, the connecting pipe 7 passes through the motor housing 1 and is connected with an oil inlet pipe 9, the oil inlet pipe 9 is connected with an external oil transfer pump, cooling oil is input into the oil cavity in the oil injection component 4 through the oil inlet pipe 9, and is finally ejected from each oil injection hole, thereby performing oil injection cooling on the end winding of the motor; when the oil is led into the motor shell, the motor shell is also provided with an oil outlet pipe, the cooling oil is discharged from the motor shell through the oil outlet pipe, and the circulation of the cooling oil is realized.
However, the existing cooling method has the following disadvantages: considering the actual operation condition of the oil-cooled motor, in the actual operation and cooling process of the oil-cooled motor, a certain amount of cooling oil is always left in the motor shell, the cooling oil is accumulated below the motor shell, a cooling oil pool is formed by the height of one third to one half of the lower part in the motor shell, the lower part of the end winding is always immersed in the cooling oil pool, the upper part of the end winding is not immersed in the cooling oil pool, and is cooled only by oil sprayed by an oil spraying part, so that the cooling below the end winding is excessive, the cooling above the end winding is insufficient, and finally the difference of the upper and lower cooling effects of the end winding of the motor is overlarge, so that the actual operation efficiency of the motor is influenced.
Disclosure of Invention
The invention aims to solve the problem that the actual operation efficiency of the motor is influenced by overlarge difference of the up-down cooling effect of the end winding of the motor due to the fact that the cooling below the end winding is excessive and the cooling above the end winding is insufficient in the process of cooling the end winding of the existing oil-cooled motor, and provides an oil-spraying cooling mechanism for the end winding of the stator of the oil-cooled motor, which can effectively solve the problem,
the purpose of the invention is realized by the following technical scheme: an oil cooling motor stator end winding oil spraying cooling mechanism comprises a motor shell and a stator iron core arranged in the motor shell, wherein end windings are arranged at two ends of the stator iron core; the oil injection part is provided with a connecting pipe used for being connected with an oil inlet pipe, the connecting pipe penetrates through the motor shell, one end of the oil inlet pipe is provided with a connecting piece matched with the connecting pipe, the connecting piece is cylindrical, and a detachable connecting mechanism is arranged between the connecting piece and the connecting pipe.
In the invention, the cooling mechanism of the traditional oil-cooled motor is improved and optimized. According to the invention, the oil injection part is designed in a semicircular arc shape, the oil injection part surrounds the upper half part of the end winding, when the end winding is cooled, the cooling oil is intensively injected to the upper half part of the end winding, and the lower half part of the end winding is always immersed in the cooling oil, so that a measure of injecting oil to the lower half part of the end winding is not needed, and the cooling oil can be intensively injected to the upper half part of the end winding because the oil is not injected to the lower half part of the end winding any more, so that the upper half part and the lower half part of the end winding can be well cooled, the whole end winding can be well cooled, and the operation efficiency of the motor is improved. The oil inlet pipe is connected with the connecting pipe on the oil injection part through the connecting piece, and quick connection and disassembly can be realized between the connecting piece and the connecting pipe.
Preferably, the number of the oil injection holes is six, and the interval angle between every two adjacent oil injection holes is 36 degrees.
Preferably, the aperture of the oil spray hole is 2-3 mm.
Preferably, a sealing ring is fitted on an outer surface of the connection pipe. When the connecting pipe is connected with the connecting piece, the connecting pipe is inserted into the connecting piece, and the sealing fit between the connecting pipe and the connecting piece is realized through the sealing ring.
Preferably, the detachable connecting mechanism comprises a guide hole arranged on the side surface of the connecting pipe, the guide hole is arranged along the radial direction of the connecting pipe, a lock head is connected in the guide hole in a sliding manner, one end of the lock head extends out of the outer side surface of the connecting pipe, the other end of the lock head is provided with a rod body, a limiting stop ring is arranged on the lock head, a stepped surface matched with the limiting stop ring is arranged in the guide hole, and a clamping groove matched with the lock head is arranged on the inner wall of the connecting piece; a check ring is arranged in the guide hole, and a spring is arranged between the check ring and the lock head; the connecting pipe is internally provided with a sliding ring which can slide along the axial direction of the connecting pipe, the sliding ring comprises a guide ring and a flow-meeting plate arranged in the guide ring, a connecting rod is arranged between the sliding ring and the end part of the rod body, and two ends of the connecting rod are respectively connected with the sliding ring and the rod body in a rotating way. The detachable connecting mechanism can realize quick connection and disassembly between the connecting pipe and the connecting piece. When the connecting pipe is connected with the connecting piece, the connecting pipe is inserted into the connecting piece, and the front end of the lock head can be clamped into the clamping groove arranged on the inner wall of the connecting piece, so that the connecting pipe and the connecting piece are locked; in order to realize a better locking effect between the connecting pipe and the connecting piece and avoid the connecting piece from being separated from the connecting pipe in the cooling process, a sliding ring is arranged in the connecting pipe, cooling oil flows into the oil injection part through the connecting pipe in the cooling process, the flowing cooling oil impacts a flow plate on the sliding ring at the moment so as to form certain impact force on the sliding ring, the direction of the impact force is consistent with the axial direction of the connecting pipe, and under the action of a connecting rod, the sliding ring forms a jacking force on the lock head so that the front end of the lock head can be firmly jacked into the clamping groove, and the connecting pipe and the connecting piece are firmly locked; when the cooling mechanism does not work, the sliding ring can not apply pushing force to the lock head, so that the connecting piece can be easily detached from the connecting pipe.
Preferably, one end of the lock head extending out of the outer surface of the connecting pipe is hemispherical, and the clamping groove is a hemispherical groove.
Preferably, the drainage plate is circular.
The invention has the beneficial effects that: according to the invention, the cooling mechanism of the traditional oil-cooled motor is improved and optimized, so that the upper half part and the lower half part of the end winding can be well cooled, the whole end winding can be well cooled, and the running efficiency of the motor is improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a sectional view taken along a-a in fig. 1.
Fig. 3 is an enlarged view of a portion B in fig. 1.
Fig. 4 is an enlarged view of a portion D in fig. 3.
Fig. 5 is a schematic structural view of the slip ring.
Fig. 6 is a schematic diagram of a cooling mechanism in a conventional oil-cooled motor.
In the figure: 1. the motor comprises a motor shell, a stator core, a stator winding, an end winding, a fuel injection component, a fuel cavity, a fuel injection hole, a connecting pipe, a connecting piece, a fuel inlet pipe, a sealing ring, a sliding ring, a guide hole, a connecting rod, a lock head, a rod body, a limiting baffle ring, a retainer ring, a spring, a guide ring, a guide plate, a flow-receiving plate, a connecting rod and a check ring, wherein the motor shell 2, the stator core 3, the end winding, 4, the fuel injection component 5, the oil cavity, 6, the fuel injection hole, 7, the connecting pipe, 8, the connecting piece, 9, the fuel inlet pipe, 10, the sealing ring, 11, the sliding ring, 12, the guide hole, 13, the lock head, 14, the rod body, 15, the limiting baffle ring, 16, the retainer ring, the check ring, 17, the spring, 18, the guide ring, 19, the incident flow plate, 20 and the connecting rod.
Detailed Description
The invention is further described by the following detailed description in conjunction with the accompanying drawings.
Example 1:
as shown in fig. 1 to 5, an oil-cooled motor stator end winding oil-spraying cooling mechanism comprises a motor housing 1 and a stator core 2 arranged in the motor housing 1, wherein end windings 3 are arranged at two ends of the stator core 2. The motor shell 1 is internally provided with an oil injection part 4 corresponding to the end winding 3, and the oil injection part 4 is connected with an oil inlet pipe 9. The oil injection part 4 is in a semicircular arc shape. The fuel injection member 4 is fixed to the inner wall of the motor housing 1. The oil injection member 4 is disposed above the end winding 3, and the oil injection member 4 surrounds the upper half of the end winding 3. An oil chamber 5 is provided in the oil injection member 4. An oil injection hole 6 communicated with the oil cavity 5 is arranged on one side of the oil injection part 4 close to the end winding 3. The oil spray holes 6 are six, and the interval angle between every two adjacent oil spray holes 6 is 36 degrees. The aperture of the oil spray hole 6 is 2-3 mm.
The oil injection part 4 is provided with a connecting pipe 7 which is connected with an oil inlet pipe 9, and the connecting pipe 7 penetrates through the motor shell 1. One end of the oil inlet pipe 9 is provided with a connecting piece 8 matched with the connecting pipe 7. The connecting piece 8 is cylindrical. A detachable connecting mechanism is arranged between the connecting piece 8 and the connecting pipe 7. The outer surface of the connecting pipe 7 is embedded with a sealing ring 10. When the connecting pipe is connected with the connecting piece, the connecting pipe is inserted into the connecting piece, and the sealing fit between the connecting pipe and the connecting piece is realized through the sealing ring.
The detachable connection mechanism comprises guide holes 12 arranged at the side of the connection pipe 7, the guide holes 12 being arranged in the radial direction of the connection pipe 7. A lock head 13 is slidably connected in the guide hole 12. One end of the lock head 13 extends out of the outer side surface of the connecting pipe 7, and the other end of the lock head 13 is provided with a rod body 14. The lock head 13 is provided with a limit stop ring 15, and a stepped surface matched with the limit stop ring 15 is arranged in the guide hole. The inner wall of the connecting piece 8 is provided with a clamping groove matched with the lock head 13. The end of the lock head 13 extending out of the outer side surface of the connecting pipe 7 is hemispherical, and the clamping groove is a hemispherical groove. A retainer ring 16 is arranged in the guide hole 12, and the retainer ring 16 is arranged at one end of the guide hole 12 close to the inside of the connecting pipe 7. A spring 17 is arranged between the retainer ring 16 and the lock head 13. The connecting pipe 7 is internally provided with a sliding ring 11 capable of sliding along the axial direction of the connecting pipe, the sliding ring 11 comprises a guide ring 18 and an incident flow plate 19 arranged in the guide ring 18, and the incident flow plate 19 is in a circular ring shape. A connecting rod 20 is arranged between the ends of the sliding ring 11 and the rod body 14, and two ends of the connecting rod 20 are respectively connected with the sliding ring 11 and the rod body 14 in a rotating manner. The detachable connecting mechanism can realize quick connection and disassembly between the connecting pipe and the connecting piece. When the connecting pipe is connected with the connecting piece, the connecting pipe is inserted into the connecting piece, and the front end of the lock head can be clamped into the clamping groove arranged on the inner wall of the connecting piece, so that the connecting pipe and the connecting piece are locked; in order to realize a better locking effect between the connecting pipe and the connecting piece and avoid the connecting piece from being separated from the connecting pipe in the cooling process, a sliding ring is arranged in the connecting pipe, cooling oil flows into the oil injection part through the connecting pipe in the cooling process, the flowing cooling oil impacts a flow plate on the sliding ring at the moment so as to form certain impact force on the sliding ring, the direction of the impact force is consistent with the axial direction of the connecting pipe, and under the action of a connecting rod, the sliding ring forms a jacking force on the lock head so that the front end of the lock head can be firmly jacked into the clamping groove, and the connecting pipe and the connecting piece are firmly locked; when the cooling mechanism does not work, the sliding ring can not apply pushing force to the lock head, so that the connecting piece can be easily detached from the connecting pipe.
In the invention, the cooling mechanism of the traditional oil-cooled motor is improved and optimized. According to the invention, the oil injection part is designed in a semicircular arc shape, the oil injection part surrounds the upper half part of the end winding, when the end winding is cooled, the cooling oil is intensively injected to the upper half part of the end winding, and the lower half part of the end winding is always immersed in the cooling oil, so that a measure of injecting oil to the lower half part of the end winding is not needed, and the cooling oil can be intensively injected to the upper half part of the end winding because the oil is not injected to the lower half part of the end winding any more, so that the upper half part and the lower half part of the end winding can be well cooled, the whole end winding can be well cooled, and the operation efficiency of the motor is improved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides an oil-cooled motor stator end winding oil spout cooling body, includes motor casing and the stator core of setting in the motor casing, and stator core's both ends are provided with end winding, are provided with the oil spout part corresponding with end winding in the motor casing, and oil spout part connects into oil pipe, its characterized in that: the oil injection part is in a semicircular arc shape and is arranged above the end winding, an oil cavity is formed in the oil injection part, and an oil injection hole communicated with the oil cavity is formed in one side, close to the end winding, of the oil injection part; the oil injection part is provided with a connecting pipe used for being connected with an oil inlet pipe, the connecting pipe penetrates through the motor shell, one end of the oil inlet pipe is provided with a connecting piece matched with the connecting pipe, the connecting piece is cylindrical, and a detachable connecting mechanism is arranged between the connecting piece and the connecting pipe.
2. The oil-cooled motor stator end winding oil spray cooling mechanism of claim 1, wherein six oil spray holes are provided, and the interval angle between two adjacent oil spray holes is 36 degrees.
3. The oil-cooled motor stator end winding oil spray cooling mechanism of claim 1, wherein the diameter of the oil spray hole is 2-3 mm.
4. The oil-cooled motor stator end winding oil-injected cooling mechanism according to claim 1, 2 or 3, wherein a seal ring is embedded on the outer side surface of the connecting pipe.
5. The oil-cooled motor stator end winding oil injection cooling mechanism is characterized in that the detachable connection mechanism comprises a guide hole arranged on the side surface of the connecting pipe, the guide hole is arranged along the radial direction of the connecting pipe, a lock head is connected in the guide hole in a sliding mode, one end of the lock head extends out of the outer side surface of the connecting pipe, a rod body is arranged at the other end of the lock head, a limiting stop ring is arranged on the lock head, a stepped surface matched with the limiting stop ring is arranged in the guide hole, and a clamping groove matched with the lock head is formed in the inner wall of the connecting piece; a check ring is arranged in the guide hole, and a spring is arranged between the check ring and the lock head; the connecting pipe is internally provided with a sliding ring which can slide along the axial direction of the connecting pipe, the sliding ring comprises a guide ring and a flow-meeting plate arranged in the guide ring, a connecting rod is arranged between the sliding ring and the end part of the rod body, and two ends of the connecting rod are respectively connected with the sliding ring and the rod body in a rotating way.
6. The oil-cooled motor stator end winding oil spray cooling mechanism of claim 5, wherein one end of the lock head extending out of the outer surface of the connecting pipe is hemispherical, and the clamping groove is a hemispherical groove.
7. The oil-cooled motor stator end winding oil spray cooling mechanism of claim 5, wherein the flow guide plate is annular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111581503.9A CN114421712B (en) | 2021-12-22 | 2021-12-22 | Oil-cooled motor stator end winding oil spray cooling mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111581503.9A CN114421712B (en) | 2021-12-22 | 2021-12-22 | Oil-cooled motor stator end winding oil spray cooling mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114421712A true CN114421712A (en) | 2022-04-29 |
| CN114421712B CN114421712B (en) | 2023-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111581503.9A Active CN114421712B (en) | 2021-12-22 | 2021-12-22 | Oil-cooled motor stator end winding oil spray cooling mechanism |
Country Status (1)
| Country | Link |
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| CN (1) | CN114421712B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117240006A (en) * | 2023-09-21 | 2023-12-15 | 深圳沃新智创科技有限公司 | Cooling motor system with temperature monitoring function |
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| CN117240006A (en) * | 2023-09-21 | 2023-12-15 | 深圳沃新智创科技有限公司 | Cooling motor system with temperature monitoring function |
| CN117240006B (en) * | 2023-09-21 | 2024-05-14 | 深圳沃新智创科技有限公司 | Cooling motor system with temperature monitoring function |
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| Publication number | Publication date |
|---|---|
| CN114421712B (en) | 2023-08-01 |
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