CN108933497B - Cooling motor - Google Patents
Cooling motor Download PDFInfo
- Publication number
- CN108933497B CN108933497B CN201710375069.6A CN201710375069A CN108933497B CN 108933497 B CN108933497 B CN 108933497B CN 201710375069 A CN201710375069 A CN 201710375069A CN 108933497 B CN108933497 B CN 108933497B
- Authority
- CN
- China
- Prior art keywords
- oil
- end cover
- communicated
- shell
- cooling
- 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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Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses a cooling motor, which comprises a shell, a front end cover, a rear end cover, a stator, a rotor, a rotating shaft and a bearing, wherein the shell is arranged on the front end cover; one end of the shell is in sealing connection with the front end cover, the other end of the shell is in sealing connection with the rear end cover, an oil way pointing to the center from the edge is formed in the inner wall of the rear end cover, an oil passage is formed in the center of the rotating shaft along the axial direction of the rotating shaft, one end of the oil passage is a closed end, the other end of the oil passage is an open end, the side walls of the two ends of the rotating shaft respectively penetrate through oil outlet holes, the oil outlet holes are close to the bearing and are communicated with the oil passage, an oil filling port communicated with the sealing cavity is formed in the top wall of the shell, a cooling flow passage is formed between the groove and the stator, one end of the cooling flow passage is communicated with the oil filling port, and the other end of the cooling flow passage is communicated with the oil inlet of the oil passage; the oil outlet of the oil way is communicated with the opening end of the oil way. The cooling oil can carry out heat generated by the inner rotor, the rotating shaft and the bearing of the shell, and meanwhile, the cooling oil can well lubricate the bearing, so that the heat generation is reduced, and the service life of the cooling oil is prolonged.
Description
Technical Field
The invention relates to the technical field of motor cooling, in particular to a cooling motor.
Background
The motor generally comprises a rotor, a stator, a rotating shaft, a cooling fan and a shell, wherein a large amount of heat is generated in the rotating process of the rotor, the generated heat is mainly dissipated through the cooling fan and the shell, the heat dissipation effect on the outer surface of the motor is better by the heat dissipation mode, but the heat generated by high-heat-generation components in the motor, such as the rotor, the rotating shaft and the bearing, is difficult to dissipate; meanwhile, in order to increase the lubrication effect between the rotating shaft and the bearing, it is necessary to add lubricating oil to the bearing of the rotating shaft at an irregular period, and it is difficult to add the lubricating oil because the bearing is installed in the housing.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a cooling motor.
The invention relates to a technical scheme that:
A cooling motor comprises a shell, a front end cover, a rear end cover, a stator, a rotor, a rotating shaft and a bearing for supporting the rotating shaft; one end of the shell is in sealing connection with the front end cover, the other end of the shell is in sealing connection with the rear end cover, a sealing cavity is formed among the shell, the front end cover and the rear end cover, an oil way with the edge pointing to the center is formed in the inner wall of the rear end cover, an oil duct is arranged in the center of the rotating shaft along the axial direction of the rotating shaft, one end of the oil duct is a closed end, the other end of the oil duct is an open end, oil outlets penetrate through the side walls of the two ends of the rotating shaft respectively, the oil outlets are close to the bearing and are communicated with the oil duct, an oil filling port communicated with the sealing cavity is formed in the top wall of the shell, a groove is formed in the inner wall of the shell, a cooling runner is formed between the groove and the stator, one end of the cooling runner is communicated with the oil filling port, and the other end of the cooling runner is communicated with an oil inlet of the oil way of the rear end cover; the oil outlet of the oil way is communicated with the opening end of the oil way of the rotating shaft, the bottom of the inner wall of the shell is provided with an oil collecting groove, and the front end cover or the rear end cover is penetrated with an oil discharging hole communicated with the oil collecting groove.
The cooling runner comprises two sub-runners, the sub-runners are circuitous grooves extending from the top to the bottom of the inner wall of the shell, the number of the oil ways is two, one end of each sub-runner is communicated with the oil filling port, and the other end of each sub-runner is communicated with the oil inlet of the oil way.
The preferred scheme is that the inner wall of the front end cover or the rear end cover is extended with an oil retainer, the oil retainer is sleeved outside the bearing, and the width of the oil retainer is not smaller than the width of the bearing.
The preferred scheme is that the center of the inner wall of the rear end cover is provided with a connecting pipe, one end of the connecting pipe is sleeved in the oil duct, and the other end of the connecting pipe is communicated with the oil outlet of the oil duct.
In combination with the technical scheme, the invention has the beneficial effects that: the cooling oil flows into the cooling flow passage from the oil filling port, the cooling oil flows into the oil passage along the cooling flow passage, the cooling oil in the cooling flow passage plays a role in cooling the stator and the rotor, then the cooling oil flows into the oil passage in the center of the rotating shaft through the oil passage, the cooling oil in the oil passage is thrown out along the oil outlet during the rotating process of the rotating shaft, and part of the thrown cooling oil permeates between the rotating shaft and the bearing, so that the lubricating and cooling effects on the rotating shaft and the bearing can be achieved, the cooling oil after cooling or after lubricating flows into the oil collecting groove under the action of gravity, and the cooling oil in the oil collecting groove is discharged from the oil discharging hole; the cooling oil sequentially passes through the cooling flow passage, the oil duct and the oil collecting groove of the shell and is finally discharged from the oil discharge hole, so that the cooling oil can well carry out heat generated by the inner rotor, the rotating shaft and the bearing of the shell, and meanwhile, the cooling oil can well lubricate the bearing, thereby reducing heat generation and prolonging the service life of the bearing.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention, as well as the preferred embodiments thereof, together with the following detailed description of the invention, given by way of illustration only, together with the accompanying drawings.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a cross-sectional view of the housing of the present invention;
FIG. 4 is a cross-sectional view of the rear end cap of the present invention;
FIG. 5 is an exploded view of the present invention;
Fig. 6 is a perspective view of a rotary shaft in the present invention.
Detailed Description
As shown in fig. 1 and 2, a cooling motor includes a casing 100, a front cover 200, a rear cover 300, a stator 500, a rotor 600, a rotating shaft 500, and a bearing 700 for supporting the rotating shaft 500.
As shown in fig. 1 and 2, one end of a casing 100 is in sealing connection with a front end cover 200, the other end of the casing 100 is in sealing connection with a rear end cover 300, a sealing cavity is formed among the casing 100, the front end cover 200 and the rear end cover 300, an oil channel 301 with edges pointing to the center is formed in the inner wall of the rear end cover 300, an oil channel 401 is arranged in the center of a rotating shaft 500 along the axial direction of the rotating shaft, one end of the oil channel 401 is a closed end, the other end of the oil channel 401 is an open end, oil outlet 402 penetrates through the side walls of two ends of the rotating shaft 500 respectively, the oil outlet 402 is close to a bearing 700 and is communicated with the oil channel 401, an oil filling port 101 communicated with the sealing cavity is formed in the top wall of the casing 100, a groove is formed between the groove and a stator 500, one end of the cooling channel 102 is communicated with the oil filling port 101, and the other end of the cooling channel 102 is communicated with an oil inlet 302 of the oil channel 301 of the rear end cover 300; the oil outlet 303 of the oil path 301 is communicated with the opening end of the oil path 401 of the rotating shaft 500, the bottom of the inner wall of the casing 100 is provided with an oil collecting groove 103, and the front end cover 200 or the rear end cover 300 is penetrated with an oil drain hole 304 communicated with the oil collecting groove 103.
As shown in fig. 1 to 6, the cooling oil flows into the cooling flow passage 102 from the oil inlet 101, the cooling oil flows into the oil passage 301 along the cooling flow passage 102, the cooling oil in the cooling flow passage 102 cools the stator 500 and the rotor 600, and then flows into the oil passage 401 in the center of the rotating shaft 500 through the oil passage 301, the cooling oil in the oil passage 401 is thrown out along the oil outlet 402 during the rotation of the rotating shaft 500, and part of the thrown cooling oil permeates between the rotating shaft 500 and the bearing 700, so that lubrication and cooling can be performed on the rotating shaft 500 and the bearing 700, the cooling oil after cooling or lubrication flows into the oil sump 103 under the action of gravity, and the cooling oil in the oil sump 103 is discharged from the oil drain hole 304.
As shown in fig. 1 to 6, the cooling flow passage 102 includes two branch flow passages, the branch flow passages are circuitous grooves extending from the top to the bottom of the inner wall of the casing 100, the number of the oil passages 301 is two, one end of each branch flow passage is communicated with the oil filling port 101, the other end of each branch flow passage is communicated with the oil inlet 302 of the oil passage 301, and the circuitous grooves increase the travel of the branch flow passages, so that the cooling effect can be better achieved. In order to enable the cooling oil in the split runner to flow to the oil path 301 more smoothly, an oil collecting path 104 is provided on the inner wall of the casing 100, and the oil collecting path 104 is used for connecting the split runner and the oil path 301.
As shown in fig. 1 to 6, the inner wall of the front end cover 200 or the rear end cover 300 is extended with a slinger 305, the slinger 305 is sleeved outside the bearing 700, and the width of the slinger 305 is not smaller than the width of the bearing 700. During the rotation process of the rotating shaft 500, the cooling oil in the oil duct 401 is thrown out along the oil outlet 402, part of the thrown cooling oil permeates between the rotating shaft 500 and the bearing 700, and part of the cooling oil is blocked by the oil retainer 30, so that the cooling oil flows to the oil collecting groove 103.
As shown in fig. 1 to 6, a connecting pipe 306 is arranged in the center of the inner wall of the rear end cover 300, one end of the connecting pipe 306 is sleeved in the oil duct 401, and the other end is communicated with the oil outlet 303 of the oil path 301.
The foregoing is a specific embodiment of the invention, it will be appreciated by those skilled in the art that modifications and variations may be made without departing from the principles of the invention, and such modifications and variations are to be regarded as being within the scope of the invention.
Claims (3)
1. A cooling motor comprises a shell, a front end cover, a rear end cover, a stator, a rotor, a rotating shaft and a bearing for supporting the rotating shaft; one end of the shell is in sealing connection with the front end cover, the other end of the shell is in sealing connection with the rear end cover, a sealing cavity is formed among the shell, the front end cover and the rear end cover, and the novel rotary compressor is characterized in that an oil way from the edge to the center is formed in the inner wall of the rear end cover, an oil passage is formed in the center of the rotary shaft along the axial direction of the rotary shaft, one end of the oil passage is a closed end, the other end of the oil passage is an open end, oil outlet holes are respectively formed in the side walls of the two ends of the rotary shaft in a penetrating mode, the oil outlet holes are close to a bearing and are communicated with the oil passage, an oil filling port communicated with the sealing cavity is formed in the top wall of the shell, a groove is formed in the inner wall of the shell, a cooling flow passage is formed between the groove and a stator, one end of the cooling flow passage is communicated with the oil filling port, and the oil inlet of the oil passage of the rear end of the rotary shaft is communicated with the oil inlet of the rear end cover; the oil outlet of the oil way is communicated with the opening end of the oil way of the rotating shaft, the bottom of the inner wall of the shell is provided with an oil collecting groove, and the front end cover or the rear end cover is penetrated with an oil discharging hole communicated with the oil collecting groove; the center of the inner wall of the rear end cover is provided with a connecting pipe, one end of the connecting pipe is sleeved in the oil duct, and the other end of the connecting pipe is communicated with an oil outlet of the oil duct.
2. The cooling motor according to claim 1, wherein the cooling flow passage includes two branch flow passages, the branch flow passages are detour grooves extending from the top to the bottom of the inner wall of the casing, the number of the oil passages is two, one end of each branch flow passage is communicated with the oil filling port, and the other end is communicated with the oil inlet of the oil passage.
3. The cooling motor according to claim 1, wherein the inner wall of the front end cover or the rear end cover is extended with a slinger, the slinger is sleeved outside the bearing, and the width of the slinger is not smaller than the width of the bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710375069.6A CN108933497B (en) | 2017-05-24 | 2017-05-24 | Cooling motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710375069.6A CN108933497B (en) | 2017-05-24 | 2017-05-24 | Cooling motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108933497A CN108933497A (en) | 2018-12-04 |
| CN108933497B true CN108933497B (en) | 2024-07-12 |
Family
ID=64450662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710375069.6A Active CN108933497B (en) | 2017-05-24 | 2017-05-24 | Cooling motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108933497B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109802508B (en) * | 2019-03-21 | 2024-10-18 | 宁波安信数控技术有限公司 | Liquid cooling shell convenient for motor serialization and manufacturing method thereof |
| CN113824249B (en) * | 2021-09-03 | 2022-07-26 | 珠海格力电器股份有限公司 | Electric machine |
| CN114441795A (en) * | 2021-12-27 | 2022-05-06 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | Airplane generator rotor overspeed testing device and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204425118U (en) * | 2015-01-14 | 2015-06-24 | 上海大郡动力控制技术有限公司 | For the dynamo oil air-cooled structure of electric automobile |
| CN204858880U (en) * | 2015-07-22 | 2015-12-09 | 比亚迪股份有限公司 | Cooling system and cold motor of oil of cold motor of oil |
| CN206727796U (en) * | 2017-05-24 | 2017-12-08 | 明程电机技术（深圳）有限公司 | Cool down motor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203554162U (en) * | 2013-10-30 | 2014-04-16 | 大洋电机新动力科技有限公司 | Motor structure with internal oil cooling |
| US20150280522A1 (en) * | 2014-03-31 | 2015-10-01 | Caterpillar Inc. | Electric machine having rotor cooling assembly |
-
2017
- 2017-05-24 CN CN201710375069.6A patent/CN108933497B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204425118U (en) * | 2015-01-14 | 2015-06-24 | 上海大郡动力控制技术有限公司 | For the dynamo oil air-cooled structure of electric automobile |
| CN204858880U (en) * | 2015-07-22 | 2015-12-09 | 比亚迪股份有限公司 | Cooling system and cold motor of oil of cold motor of oil |
| CN206727796U (en) * | 2017-05-24 | 2017-12-08 | 明程电机技术（深圳）有限公司 | Cool down motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108933497A (en) | 2018-12-04 |
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