CN108667217B - Axial single-groove double-L-shaped parallel-flow-channel reverse-flow permanent magnet synchronous motor cooling system - Google Patents
Axial single-groove double-L-shaped parallel-flow-channel reverse-flow permanent magnet synchronous motor cooling system Download PDFInfo
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- CN108667217B CN108667217B CN201810449596.1A CN201810449596A CN108667217B CN 108667217 B CN108667217 B CN 108667217B CN 201810449596 A CN201810449596 A CN 201810449596A CN 108667217 B CN108667217 B CN 108667217B
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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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- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses an axial single-groove double-L-shaped parallel-flow-channel reverse-flow permanent magnet synchronous motor cooling system, which comprises a casing and a shell, wherein the casing is provided with a plurality of grooves; the casing is provided with an axial groove, a forward flow channel and a reverse flow channel are arranged in the axial groove, the sections of the forward flow channel and the reverse flow channel are both L-shaped, and a double-L-shaped axial flow channel with a rectangular section is spliced; two ends of the forward flow channel are respectively connected with the forward water inlet port and the forward water outlet port, two ends of the reverse flow channel are respectively connected with the reverse water inlet port and the reverse water outlet port, and the forward water inlet port, the forward water outlet port, the reverse water inlet port and the reverse water outlet port are arranged on the shell; the shell is fixedly arranged outside the machine shell, so that the axial single groove becomes a closed axial channel. The invention effectively improves the heat exchange efficiency, greatly reduces the internal temperature of the motor, and effectively reduces the temperature difference of inlet and outlet water and the temperature gradient at two ends of the motor.
Description
Technical Field
The invention relates to the technical field of motor cooling, in particular to an axial single-groove double-L-shaped parallel-flow-channel reverse-flow permanent magnet synchronous motor cooling system.
Background
All motors generate loss in the running process, and the loss not only reduces the working efficiency of the motors, but also increases the internal temperature of the motors. The property of the material in the motor can be influenced by the overhigh temperature rise, the safe operation of the motor is directly influenced, and particularly for the permanent magnet motor, the permanent magnet can be irreversibly demagnetized due to the overhigh temperature rise. In the use process of the motor, water cooling is a cooling mode commonly adopted by the permanent magnet synchronous motor. The cooling system added to the permanent magnet synchronous motor mainly utilizes a cooling medium to take away heat generated in the running process of the permanent magnet synchronous motor, so that the effect of quickly cooling is achieved, and a series of problems of safe running and the like caused by overhigh temperature of the motor are avoided.
The current design of a motor water cooling system is mainly to carry out design analysis on the water channel distribution of the cooling system, and the flow direction of a cooling medium in the cooling system mainly flows along the axial Liu span of an original motor and along the circumferential direction of the motor. The axial water channel is formed by a plurality of axially parallel shifts, the cooling medium flows along the axial direction of the motor, the contact area with the motor is large, and the heat dissipation effect is good; the inlet and the outlet of the axial waterway can be arranged at one section of the motor, so that the structure is simpler; the circumferential water channel has the advantages that the contact area between the cooling medium and the motor is large, the heat dissipation is good, the water channel is smooth, and the water resistance of the cooling medium in the flowing process is small. However, no matter the axial waterway or the circumferential waterway, the accumulated flow of the axial water flow path or the accumulated flow of the axial water flow path is too long, so that the water temperature difference at the inlet and the outlet is large, namely the temperature gradient at the two ends is large.
Disclosure of Invention
In order to solve the technical problems, the invention provides an axial single-groove double-L-shaped parallel-flow-channel reverse-flow permanent magnet synchronous motor cooling system which can effectively improve the heat exchange efficiency, greatly reduce the internal temperature of a motor and effectively reduce the temperature difference of water at an inlet and an outlet and the temperature gradient at two ends of the motor.
The technical scheme adopted by the invention is as follows: an axial single-groove double-L-shaped parallel-flow-channel reverse-flow permanent magnet synchronous motor cooling system comprises a shell and a shell; the casing is provided with an axial groove, a forward flow channel and a reverse flow channel are arranged in the axial groove, the sections of the forward flow channel and the reverse flow channel are both L-shaped, and a double-L-shaped axial flow channel with a rectangular section is spliced; two ends of the forward flow channel are respectively connected with the forward water inlet port and the forward water outlet port, two ends of the reverse flow channel are respectively connected with the reverse water inlet port and the reverse water outlet port, and the forward water inlet port, the forward water outlet port, the reverse water inlet port and the reverse water outlet port are arranged on the shell; the shell is fixedly arranged outside the machine shell, so that the axial single groove becomes a closed axial channel.
The cooling system of the axial single-groove double-L-shaped parallel-flow-channel reverse-flow permanent magnet synchronous motor further comprises a Y-shaped communicating pipe, and two branch pipes of the Y-shaped communicating pipe are respectively connected with the positive water inlet port and the negative water inlet port; the inner diameter of the port part of the Y-shaped communicating pipe connected with the positive water inlet port and the negative water inlet port is larger than that of the trunk parts of the two branch pipes of the Y-shaped communicating pipe.
In the cooling system of the axial single-groove double-L-shaped parallel-flow-channel reverse-flow permanent magnet synchronous motor, the positive water inlet port, the positive water outlet port, the reverse water inlet port and the reverse water outlet port are arranged at the same end of the shell.
Compared with the prior art, the invention has the beneficial effects that:
compared with the prior art, the invention has the beneficial effects that: compared with the existing water cooling structure with a single axial channel and a single spiral channel, the water cooling structure has the advantages that the heat exchange efficiency is effectively improved, the internal temperature of the motor is greatly reduced, and the temperature difference of water at the inlet and the outlet and the temperature gradient at the two ends of the motor are effectively reduced; the invention realizes the uniformity of cold removal cut-off flow velocity and flow in the forward and reverse axial channels by connecting the Y-shaped communicating pipe with the forward water inlet port and the reverse water inlet port, and can reduce the impact of the ports.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of the flow of the cooling medium of the present invention in the flow passage.
FIG. 3 is a schematic cross-sectional view of an axial double L flow path of the present invention.
Fig. 4 is a schematic structural view of the Y-shaped communication pipe of the present invention.
In the figure: 1. shell, 2 casing, 3 forward flow channel, 4 reverse flow channel, AiPositive inlet port, AoPositive outlet port, BiReverse water inlet port, BoA reverse water inlet port.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in FIG. 3, the present invention includes a positive water inlet port A provided in the cabinet 2iPositive water outlet port AoAnd a reverse water inlet port BiAnd a reverse water outlet port BoA forward flow passage 3, a reverse flow passage 4, a shell 1 and a Y-shaped communicating pipe. An axial single groove is formed in the machine shell 2, a forward flow channel 3 and a reverse flow channel 4 are arranged in the axial single groove, the sections of the forward flow channel 3 and the reverse flow channel 4 are L-shaped, and the forward flow channel 3 and the reverse flow channel 4 are spliced into a double-L-shaped axial flow channel with a rectangular section.
Two ends of the forward flow channel 3 are respectively connected with the forward water inlet port Ai、Positive water outlet port AoAnd (4) connecting. Both ends of the reverse flow path 4Respectively connected with the reverse water inlet port Bi、Reverse water outlet port BoAnd (4) connecting. The positive water inlet port Ai、Positive water outlet port Ao、Reverse water inlet port BiAnd a reverse water outlet port BoIs arranged on the casing 1 and is positioned at the same end of the casing 1. The shell 1 is fixedly arranged outside the shell 2, so that the L-shaped forward flow passage 3 and the L-shaped reverse flow passage 4 on the outer contour surface of the shell 2 become a closed axial passage.
Two branch pipes Y of the Y-shaped communicating pipe1、Y2Respectively connected with the positive water inlet port AiAnd a reverse water inlet port BiIs connected with the positive water inlet port AiAnd a reverse water inlet port BiThe port part of the connection is more than two branch pipes Y1、Y2The inner diameter of the trunk portion of (2) is large. When the motor works, the cooling medium enters the water inlet port A from the positive directioniAnd a reverse water inlet port BiEntering, synchronously and reversely flowing in the forward flow passage 3 and the reverse flow passage 4 for cooling, and respectively cooling from the forward water outlet port A after heat exchangeoAnd a reverse water outlet port BoAnd (4) flowing out.
Claims (3)
1. The utility model provides an axial single groove two L types and flow path backward flow PMSM cooling system which characterized by: comprises a casing and a shell; the casing is provided with an axial groove, a forward flow channel and a reverse flow channel are arranged in the axial groove, the sections of the forward flow channel and the reverse flow channel are both L-shaped, and a double-L-shaped axial flow channel with a rectangular section is spliced; two ends of the forward flow channel are respectively connected with the forward water inlet port and the forward water outlet port, two ends of the reverse flow channel are respectively connected with the reverse water inlet port and the reverse water outlet port, and the forward water inlet port, the forward water outlet port, the reverse water inlet port and the reverse water outlet port are arranged on the shell; the shell is fixedly arranged outside the machine shell, so that the axial single groove becomes a closed axial channel.
2. The axial single-slot double-L-shaped parallel-flow-channel reverse-flow permanent magnet synchronous motor cooling system as claimed in claim 1, wherein: the two branch pipes of the Y-shaped communicating pipe are respectively connected with the positive water inlet port and the negative water inlet port; the inner diameter of the port part of the Y-shaped communicating pipe connected with the positive water inlet port and the negative water inlet port is larger than that of the trunk parts of the two branch pipes of the Y-shaped communicating pipe.
3. The cooling system of an axial single-slot double-L-shaped parallel-flow-channel reverse-flow permanent magnet synchronous motor according to claim 1 or 2, wherein the positive water inlet port, the positive water outlet port, the reverse water inlet port and the reverse water outlet port are arranged at the same end of the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810449596.1A CN108667217B (en) | 2018-05-11 | 2018-05-11 | Axial single-groove double-L-shaped parallel-flow-channel reverse-flow permanent magnet synchronous motor cooling system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810449596.1A CN108667217B (en) | 2018-05-11 | 2018-05-11 | Axial single-groove double-L-shaped parallel-flow-channel reverse-flow permanent magnet synchronous motor cooling system |
Publications (2)
| Publication Number | Publication Date |
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| CN108667217A CN108667217A (en) | 2018-10-16 |
| CN108667217B true CN108667217B (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810449596.1A Active CN108667217B (en) | 2018-05-11 | 2018-05-11 | Axial single-groove double-L-shaped parallel-flow-channel reverse-flow permanent magnet synchronous motor cooling system |
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| DE102022211401A1 (en) | 2022-10-27 | 2024-05-02 | Robert Bosch Gesellschaft mit beschränkter Haftung | Cooling housing and method for operating a cooling housing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6727611B2 (en) * | 2002-05-28 | 2004-04-27 | Emerson Electric Co. | Cooling jacket for electric machines |
| CN201750239U (en) * | 2010-06-09 | 2011-02-16 | 无锡东元电机有限公司 | Water-jacket type water-cooled motor |
| DE102011076529A1 (en) * | 2011-05-26 | 2012-11-29 | Zf Friedrichshafen Ag | Cooling arrangement for an electric machine |
| CN103368330B (en) * | 2012-03-30 | 2016-05-04 | 重庆长安汽车股份有限公司 | The cooling device of automobile and drive motors thereof |
| CN202679133U (en) * | 2012-08-05 | 2013-01-16 | 宁波华元机械科技有限公司 | Water cooling structure for motor shell |
| CN205986450U (en) * | 2016-08-26 | 2017-02-22 | 旭利无锡电气技术有限公司 | Water -cooling casing of motor for new energy automobile |
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