CN110601443B - Motor air-air cooler - Google Patents
Motor air-air cooler Download PDFInfo
- Publication number
- CN110601443B CN110601443B CN201910967093.8A CN201910967093A CN110601443B CN 110601443 B CN110601443 B CN 110601443B CN 201910967093 A CN201910967093 A CN 201910967093A CN 110601443 B CN110601443 B CN 110601443B
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- CN
- China
- Prior art keywords
- cavity
- air
- motor
- cooler
- communicated
- Prior art date
- 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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- 238000001816 cooling Methods 0.000 claims abstract description 55
- 238000004080 punching Methods 0.000 claims abstract description 5
- 238000009423 ventilation Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 2
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract 1
- 230000007547 defect Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
Abstract
The invention discloses an air-to-air cooler of a motor, which comprises a cooler shell fixed on the motor and two cooling cores arranged in the cooler shell; the cooling core body is formed by connecting a plurality of heat exchange plates at intervals, and a plurality of first cavities and second cavities which are arranged at intervals and are open at two ends are formed among the plurality of heat exchange plates; the opening directions of the first cavity and the second cavity are mutually perpendicular; the heat exchange plates are arranged in parallel with stator punching sheets of the motor; an outer air converging cavity, an outer air splitting cavity, an inner air inlet cavity and an inner air outlet cavity are arranged in the cooler shell; the external air converging cavity is communicated with the external air shunting cavity through the first cavities of the two cooling cores; the inner air inlet cavity is communicated with the inner air outlet cavity through the second cavities of the two cooling cores. Compared with the existing tubular cooler for the motor, the tubular cooler for the motor has the advantages of higher heat exchange efficiency, smaller material consumption, lighter weight, lower cost and high efficiency and energy conservation because the cold and hot fluid is subjected to heat exchange only once.
Description
Technical Field
The invention relates to an air cooler of a motor.
Background
Motors and generators are widely applied to industries such as metallurgy, energy sources, electric power and the like, the use amount is huge, and motor cooling is another core technology besides an electromagnetic scheme.
At present, a plurality of motors and generators adopt tubular coolers, and although the cooling requirement can be met, the type cooler is high in weight and cost, temperature difference exists between coils at two sides of the motor, and the temperature difference is usually 5-10K, the temperature difference at two ends is inconsistent, the service lives of the coils and the bearings of the motor are reduced, or the insulation grade is required to be improved to meet the use requirement, so that the cost of the motor is increased.
In addition, the average temperature difference between the two paths of internal air and the external air is different, and the heat exchange area of the internal air and the external air is smaller, so that the overall heat exchange efficiency of the cooler is reduced.
Aiming at the defects of the tubular cooler, the patent number of U.S. 2017/0303436A1 proposes a solution, wherein 4 groups of plate type cores are adopted to replace the original tubular cooling cores, but in the patent, two groups of 4 groups of cores are connected in series, two groups of cores are connected in parallel, and four cores are arranged in parallel perpendicular to the rotating shaft of the motor. As the temperature gradient becomes progressively smaller, the second of the two cores in series is less efficient in heat exchange, resulting in a lower overall efficiency. For a motor with a fan for providing air quantity and air pressure, the motor is very sensitive to the wind resistance of a cooling core body, the air quantity provided by the motor with the fan is reduced when the wind resistance is large, and the heat exchange quantity is reduced, and the serial air path part in the patent of US2017/0303436A1 adopts two core bodies, so that compared with a single core body, the wind resistance of the cooler is doubled, the heat exchange quantity of the cooler is reduced, and the heat productivity in the motor cannot be taken away; in addition, the adoption of four heat exchange cores increases the manufacturing cost of the cooler; thirdly, for the standardized and serialized motors, because of the structural limitation, the external air path can not symmetrically intake air from the front end and the rear end of the cooler, so the defect that temperature difference exists between coils at the two ends of the tubular cooler is not overcome.
Disclosure of Invention
The invention aims to provide an air-air cooler for a motor, which solves the defects existing in the prior art.
The technical scheme for realizing the aim of the invention is as follows: an air cooler of a motor comprises a cooler shell fixed on the motor and two cooling cores arranged in the cooler shell; the cooling core is formed by connecting a plurality of heat exchange plates at intervals, and a plurality of first cavities and second cavities which are arranged at intervals and are open at two ends are formed among the plurality of heat exchange plates; the opening directions of the first cavity and the second cavity are mutually perpendicular; the heat exchange plates are arranged in parallel with stator punching sheets of the motor; an outer air converging cavity and an outer air splitting cavity which are communicated with the outer space of the motor, and an inner air inlet cavity and an inner air outlet cavity which are communicated with the inner space of the motor are arranged in the cooler shell; the external air converging cavity is communicated with the external air splitting cavity through the first cavities of the two cooling cores; the inner air inlet cavity is communicated with the inner air outlet cavity through the second cavities of the two cooling cores; and a converging cavity vent communicated with the external air converging cavity is arranged on one end face of the cooler shell.
The two cooling cores are symmetrically distributed on two sides of a vertical plane where the motor rotating shaft is located; the opening directions of the first cavities of the two cooling cores are respectively arranged in a mode of forming an included angle of +/-45 degrees with the horizontal plane, and the adjacent parts of the two cooling cores are in sealing connection. It is only a preferred choice that the angle is adjustable according to the cross-sectional dimensions of the cooler limitation, thereby ensuring a spatial arrangement of the two cooling cores.
The external air converging cavity comprises lower spaces on adjacent sides of the two cooling cores, and the spaces extend to one end face of the cooler shell and are communicated with the converging cavity ventilation opening.
The external air diversion cavity comprises two upper spaces on two sides of the back of the two cooling core bodies, and the two spaces extend to the end face of the other end of the cooler shell and are communicated with two diversion cavity ventilation openings arranged on the end face of the other end of the cooler shell.
The inner wind inlet cavity is two lower spaces on the opposite sides of the two cooling cores, and inner wind inlets are arranged on the bottom surfaces of the two spaces; the two inner wind inlets are respectively communicated with two motor air outlets of the motor.
The inner air outlet cavity comprises upper spaces at the adjacent sides of the two cooling cores, and the spaces extend downwards to the bottom surface of the cooler shell along the outer parts of the two ends of the two spaces of the inner air inlet cavity and are communicated with four inner air outlets arranged at four corners of the bottom surface of the cooler shell; and the four inner air outlets are respectively communicated with four motor air inlets of the motor.
By adopting the technical scheme, the invention has the following beneficial effects: (1) The heat exchange plates of the cooling core body are arranged in parallel with the stator punching plates of the motor, the external air converging cavity is communicated with the external air splitting cavity through the first cavities of the two cooling core bodies, and compared with the traditional tubular cooler for the motor, the cooling and heating fluid only performs one-time heat exchange, so that the heat exchange efficiency is higher, and the heat exchange device has the advantages of smaller consumable, lighter weight, lower cost and high efficiency and energy conservation when the heat exchange power is equal. Compared with the existing tubular cooler, the invention has high heat exchange efficiency and small wind resistance, and can reduce the temperature rise of the coil by 5K-10K, so that the consumption of the copper winding and the iron core of the motor can be reduced when the same insulation grade requirement of the motor is met, thereby reducing the manufacturing cost of the motor.
(2) According to the cooling core, the opening directions of the first cavity and the second cavity are mutually perpendicular to form a cross-flow cooling mode, and the internal hot air and the external cold air exchange heat in a cross-flow mode in the cooling core, so that the heat exchange efficiency is higher, and the air outlet temperature difference is more uniform.
(3) The external air diversion cavity comprises two upper spaces on the back two sides of the two cooling core bodies, the two spaces extend to the end face of the other end of the cooler shell and are communicated with two diversion cavity ventilation openings arranged on the end face of the other end of the cooler shell, the external air enters the cooler from one end along the direction of the motor rotating shaft and exits the cooler from the other end, the external air diversion cavity is consistent with the air-out direction of a tubular cooler used on the existing standardized motor, the external air diversion cavity can be completely universal with the interface size of the existing motor cooler, and the defect that the external air of the patent with the patent number of US2017/0303436A1 needs to enter air from the two ends of the cooler and exits air from the top of the cooler so as to be not universal with the interface of the standardized motor cooler is overcome.
(4) Compared with the patent number of US2017/0303436A1, the two paths of air are connected in parallel for cooling, and the cold air and the hot air only perform one-time heat exchange, so that the heat exchange efficiency is higher; the invention adopts two cores to be arranged in parallel, and compared with the 4 groups of cores of the patent No. US2017/0303436A1, the two groups of cores are connected in series, and compared with the two groups of cores, the two groups of cores have smaller internal and external wind resistance, larger wind quantity, larger heat exchange capability and lower cost.
(5) The inner air outlet cavity comprises the upper spaces at the adjacent sides of the two cooling cores, the spaces extend downwards to the bottom surface of the cooler shell along the outer parts of the two ends of the two spaces of the inner air inlet cavity and are communicated with four inner air outlets arranged at four corners of the bottom surface of the cooler shell.
Drawings
In order that the invention may be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, in which
Fig. 1 is a schematic view of the structure of the present invention mounted on a motor.
Fig. 2 is a cross-sectional view A-A of fig. 1.
Fig. 3 is a B-B cross-sectional view of fig. 2.
Fig. 4 is a right side view of fig. 1.
Fig. 5 is a perspective view of fig. 1.
Fig. 6 is a perspective view of fig. 1 with one side panel removed.
Fig. 7 is a perspective view of the cooler housing of the present invention.
Fig. 8 is a perspective view of a cooling core of the present invention.
Fig. 9 is an enlarged view at C of fig. 8.
The reference numerals in the drawings are:
the cooler housing 1, the outer wind converging cavity 11, the converging cavity ventilation opening 111, the outer wind splitting cavity 12, the splitting cavity ventilation opening 121, the inner wind air inlet cavity 13, the inner wind inlet 131, the inner wind air outlet cavity 14 and the inner wind outlet 141;
the cooling core body 2, the first cavity 21, the second cavity 22 and the heat exchange plate 23;
motor 3, stator punching 31, motor shaft 32, motor air outlet 33, motor air intake 34.
Detailed Description
Example 1
Referring to fig. 1 to 9, the motor air-cooling device of the present embodiment includes a cooler housing 1 fixed to a motor 3, and two cooling cores 2 provided in the cooler housing 1. The cooling core 2 is formed by connecting a plurality of heat exchange plates 23 at intervals, and a plurality of first cavities 21 and second cavities 22 which are arranged at intervals and are open at two ends are formed among the plurality of heat exchange plates 23. The opening directions of the first cavity 21 and the second cavity 22 are perpendicular to each other. The heat exchanger plates 23 are arranged parallel to the stator laminations 31 of the electric machine 3. An outer air converging cavity 11 and an outer air dividing cavity 12 which are communicated with the outer space of the motor 3, and an inner air inlet cavity 13 and an inner air outlet cavity 14 which are communicated with the inner space of the motor 3 are arranged in the cooler shell 1. The outer wind converging cavity 11 is communicated with the outer wind splitting cavity 12 through the first cavities 21 of the two cooling cores 2. The inner air inlet cavity 13 is communicated with the inner air outlet cavity 14 through the second cavities 22 of the two cooling cores 2. A converging cavity vent 111 communicated with the outer air converging cavity 11 is arranged on one end face of the cooler shell 1.
The two cooling cores 2 are symmetrically distributed on two sides of the vertical plane where the motor rotating shaft 32 is located. The opening directions of the first cavities 21 of the two cooling cores 2 are preferably, but not limited to, arranged in such a way that they form an angle of + -45 deg. with the horizontal plane, respectively (said angle may be adjusted according to the cross-sectional dimensions of the cooler limitation, thereby ensuring a spatial arrangement of the two cooling cores 2), and that adjacent parts of the two cooling cores 2 are sealingly connected. The outside air merging chamber 11 includes lower spaces on the adjacent sides of the two cooling cores 2, which extend to one end face of the cooler housing 1, and communicate with the merging chamber vent 111. The outside air flow splitting chamber 12 includes two upper spaces on opposite sides of the two cooling cores 2, which extend to the other end face of the cooler housing 1, and communicate with two flow splitting chamber vents 121 provided on the other end face of the cooler housing 1. The inner wind inlet cavity 13 is two lower spaces on the opposite sides of the two cooling cores 2, and the bottom surfaces of the two spaces are provided with inner wind inlets 131; the two inner wind inlets 131 are respectively communicated with the two motor air outlets 33 of the motor 3. The inner air outlet cavity 14 comprises upper spaces on adjacent sides of the two cooling cores 2, extends downwards to the bottom surface of the cooler housing 1 along the outer parts of two ends of the two spaces of the inner air inlet cavity 13, and is communicated with four inner air outlets 141 arranged on four corners of the bottom surface of the cooler housing 1; the four inner wind outlets 141 are respectively communicated with the four motor air inlets 34 of the motor 3.
When the motor air-to-air cooler of the present embodiment is installed, the confluence chamber vent 111 faces one end away from the output end of the motor 3.
The working principle of the motor air-air cooler of the embodiment is as follows: under the action of centrifugal force, the hot air in the motor 3 respectively passes through the two motor air outlets 33 in the direction perpendicular to the motor rotating shaft 32 and then enters the two inner air inlet cavities 13, respectively passes through the two cooler cores 2 to exchange heat with the external air, then enters the inner air outlet cavity 14 to be converged, and finally enters the motor 3 from the two ends of the motor 3 through the four motor air inlets 34.
The external wind enters the cooler from one end along the direction parallel to the motor rotating shaft, flows out of the cooler from the other end, and after entering the interior of the cooler through the converging cavity ventilation opening 111, is uniformly divided into two paths in the external wind converging cavity 11, and respectively enters the two cooler cores through the two external wind splitting cavities 12 to enter the atmosphere.
Example 2
The motor air-to-air cooler of the present embodiment is reversely mounted to the motor 3 with respect to the mounting manner of embodiment 1, that is, the confluence chamber vent 111 is directed toward one end close to the output end of the motor 3. In this embodiment, the external air enters the two cooler cores 2 through the two external air diversion cavities 12 to exchange heat respectively, and then enters the atmosphere through the external air converging cavity 11 and then through the converging cavity ventilation opening 111.
While the foregoing is directed to embodiments of the present invention, other and further details of the invention may be had by the present invention, it should be understood that the foregoing description is merely illustrative of the present invention and that no limitations are intended to the scope of the invention, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the invention.
Claims (3)
1. An air-to-air cooler for a motor, characterized in that: comprises a cooler shell (1) fixed on a motor (3) and two cooling cores (2) arranged in the cooler shell (1); the cooling core body (2) is formed by connecting a plurality of heat exchange plates (23) at intervals, and a plurality of first cavities (21) and second cavities (22) which are arranged at intervals and are open at two ends are formed among the plurality of heat exchange plates (23); the opening directions of the first cavity (21) and the second cavity (22) are mutually perpendicular; the heat exchange plates (23) are arranged in parallel with stator punching sheets (31) of the motor (3); an outer air converging cavity (11) and an outer air dividing cavity (12) which are communicated with the outer space of the motor (3), and an inner air inlet cavity (13) and an inner air outlet cavity (14) which are communicated with the inner space of the motor (3) are arranged in the cooler shell (1); the external air converging cavity (11) is communicated with the external air distributing cavity (12) through first cavities (21) of the two cooling cores (2); the inner air inlet cavity (13) is communicated with the inner air outlet cavity (14) through second cavities (22) of the two cooling cores (2); a converging cavity vent (111) communicated with the external air converging cavity (11) is arranged on one end face of the cooler shell (1);
the two cooling cores (2) are symmetrically distributed on two sides of a vertical plane where the motor rotating shaft (32) is located; the opening directions of the first cavities (21) of the two cooling cores (2) are respectively arranged in a mode of forming an included angle of +/-45 degrees with the horizontal plane, and adjacent parts of the two cooling cores (2) are connected in a sealing mode;
the external air converging cavity (11) comprises lower spaces at the adjacent sides of the two cooling cores (2), and the lower spaces extend to one end face of the cooler shell (1) and are communicated with the converging cavity ventilation opening (111);
the external air diversion cavity (12) comprises two upper spaces on two opposite sides of the two cooling cores (2), and the two spaces extend to the end face of the other end of the cooler housing (1) and are communicated with two diversion cavity ventilation openings (121) arranged on the end face of the other end of the cooler housing (1).
2. An air-to-air cooler for a motor as set forth in claim 1, wherein: the inner wind inlet cavity (13) is two lower spaces on the opposite sides of the two cooling cores (2), and inner wind inlets (131) are arranged on the bottom surfaces of the two spaces; the two inner wind inlets (131) are respectively communicated with two motor air outlets (33) of the motor (3).
3. An air-to-air cooler for a motor as set forth in claim 2 wherein: the inner air outlet cavity (14) comprises upper spaces at the adjacent sides of the two cooling cores (2), and the spaces extend downwards to the bottom surface of the cooler shell (1) along the outer parts of two ends of the two spaces of the inner air inlet cavity (13) and are communicated with four inner air outlets (141) arranged at four corners of the bottom surface of the cooler shell (1); the four inner air outlets (141) are respectively communicated with four motor air inlets (34) of the motor (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910967093.8A CN110601443B (en) | 2019-10-12 | 2019-10-12 | Motor air-air cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910967093.8A CN110601443B (en) | 2019-10-12 | 2019-10-12 | Motor air-air cooler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110601443A CN110601443A (en) | 2019-12-20 |
| CN110601443B true CN110601443B (en) | 2024-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910967093.8A Active CN110601443B (en) | 2019-10-12 | 2019-10-12 | Motor air-air cooler |
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| Country | Link |
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| CN (1) | CN110601443B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113489239B (en) * | 2021-07-10 | 2023-04-07 | 浙江尔格科技股份有限公司 | Semi-direct-drive wind driven generator rotor cooler and cooling method thereof |
| CN117595563B (en) * | 2024-01-18 | 2024-04-02 | 湖南创一智能科技有限公司 | Motor air-air cooler |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5844333A (en) * | 1996-11-12 | 1998-12-01 | Unifin International, Inc. | Device and method for cooling a motor |
| US6246134B1 (en) * | 1999-07-07 | 2001-06-12 | Siemens Westinghouse Power Corporation | Apparatus and method for applying totally enclosed air-to-air cooler to electrical power generator |
| CN103117626A (en) * | 2013-02-04 | 2013-05-22 | 无锡市豫达换热器有限公司 | Air-air cooler |
| CN204013084U (en) * | 2014-07-08 | 2014-12-10 | 东方电气集团东方电机有限公司 | A kind of ventilation cooling structure of absolutely empty cooling type wind driven generator |
| CN204633539U (en) * | 2015-05-28 | 2015-09-09 | 庆阳能源化工集团新能源有限公司 | A kind of absolutely empty cool electric machine wind path structure |
| CN208401675U (en) * | 2018-07-09 | 2019-01-18 | 浙江尔格科技股份有限公司 | A kind of hollow cooler for motor |
| CN210431147U (en) * | 2019-10-12 | 2020-04-28 | 常州曼萨诺机电科技有限公司 | Air-air cooler for motor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101440723B1 (en) * | 2013-03-14 | 2014-09-17 | 정인숙 | A heat exchanger, a heat recovery ventilator comprising the same and a method for defrosting and checking thereof |
| CN107112859A (en) * | 2014-09-25 | 2017-08-29 | 希泰克思公司 | Heat exchange unit |
-
2019
- 2019-10-12 CN CN201910967093.8A patent/CN110601443B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5844333A (en) * | 1996-11-12 | 1998-12-01 | Unifin International, Inc. | Device and method for cooling a motor |
| US6246134B1 (en) * | 1999-07-07 | 2001-06-12 | Siemens Westinghouse Power Corporation | Apparatus and method for applying totally enclosed air-to-air cooler to electrical power generator |
| CN103117626A (en) * | 2013-02-04 | 2013-05-22 | 无锡市豫达换热器有限公司 | Air-air cooler |
| CN204013084U (en) * | 2014-07-08 | 2014-12-10 | 东方电气集团东方电机有限公司 | A kind of ventilation cooling structure of absolutely empty cooling type wind driven generator |
| CN204633539U (en) * | 2015-05-28 | 2015-09-09 | 庆阳能源化工集团新能源有限公司 | A kind of absolutely empty cool electric machine wind path structure |
| CN208401675U (en) * | 2018-07-09 | 2019-01-18 | 浙江尔格科技股份有限公司 | A kind of hollow cooler for motor |
| CN210431147U (en) * | 2019-10-12 | 2020-04-28 | 常州曼萨诺机电科技有限公司 | Air-air cooler for motor |
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| CN110601443A (en) | 2019-12-20 |
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Effective date of registration: 20230727 Address after: 411100 NO.48 Dongfeng Road, Jiuhua Economic Development Zone, Xiangtan City, Hunan Province Applicant after: Hunan Chuangyi Intelligent Technology Co.,Ltd. Address before: A67, Floor 7, No. 51, Xiheyan, Zhonglou District, Changzhou City, Jiangsu Province, 213000 Applicant before: Changzhou MANSANO Electromechanical Technology Co.,Ltd. |
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