CN107994709B - Motor rotating shaft and evaporative cooling shaft type oil-cooled motor - Google Patents
Motor rotating shaft and evaporative cooling shaft type oil-cooled motor Download PDFInfo
- Publication number
- CN107994709B CN107994709B CN201810045527.4A CN201810045527A CN107994709B CN 107994709 B CN107994709 B CN 107994709B CN 201810045527 A CN201810045527 A CN 201810045527A CN 107994709 B CN107994709 B CN 107994709B
- Authority
- CN
- China
- Prior art keywords
- oil
- rotating shaft
- motor
- end cover
- bearing chamber
- 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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Links
- 238000001816 cooling Methods 0.000 title claims abstract description 49
- 238000001704 evaporation Methods 0.000 claims abstract description 15
- 230000008020 evaporation Effects 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 238000009833 condensation Methods 0.000 claims abstract description 11
- 230000005494 condensation Effects 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 10
- 238000009413 insulation Methods 0.000 claims description 6
- 239000002826 coolant Substances 0.000 claims description 5
- 239000011148 porous material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 72
- 238000010992 reflux Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 206010027339 Menstruation irregular Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- 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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- 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)
- Mounting Of Bearings Or Others (AREA)
Abstract
The invention discloses a motor rotating shaft and an evaporative cooling shaft type oil-cooled motor, wherein the motor rotating shaft comprises a rotating shaft body, a cavity is formed in the rotating shaft body, and the rotating shaft body is sequentially divided into an evaporation section and a condensation section from the middle part to the end part; the evaporative cooling shaft type oil-cooled motor comprises a shell, a front end cover, a rear end cover, a stator, a rotor and a rotating shaft; the front end cover is provided with a front bearing chamber, the rear end cover is provided with a rear bearing chamber, the front end cover is provided with a first oil way pointing to the front bearing chamber, the rear end cover is provided with a second oil way pointing to the rear bearing chamber, the top wall of the casing is provided with an oil filling port communicated with the sealing cavity, a cooling flow passage is formed between the inner wall of the casing 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 respectively communicated with the first oil way and the second oil way. The motor has the advantages that the cooling oil of the first oil way and the second oil way cools the two ends of the motor rotating shaft, lubricates the rotating shaft and reduces the friction force in the rotating process of the rotating shaft.
Description
Technical Field
The invention relates to the technical field of motor cooling, in particular to a motor rotating shaft and an evaporative cooling shaft type oil-cooled 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 600-shaft type oil-cooled motor with a motor rotating shaft.
The invention relates to a technical scheme that:
The utility model provides a motor rotating shaft, includes the pivot body, the inside cavity that is equipped with of pivot body, the pivot body is divided into evaporation zone and condensation segment from the middle part to tip in proper order.
A preferred solution is that a wick is provided in the cavity for allowing liquid in the cavity to flow back.
Preferably, the rotating shaft body further comprises a heat insulation section, and the heat insulation section is located between the evaporation section and the condensation section.
The invention adopts another technical scheme that:
the motor rotating shaft type oil-cooled motor comprises a shell, a front end cover, a rear end cover, a stator, a rotor and a motor 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, a front bearing chamber is arranged in the center of the front end cover, a rear bearing chamber is arranged in the center of the rear end cover, bearings for supporting a motor rotating shaft are respectively arranged in the front bearing chamber and the rear bearing chamber, a first oil way from the edge to the front bearing chamber is arranged on the front end cover, a second oil way from the edge to the rear bearing chamber is arranged on the rear end cover, an oil filling port communicated with the sealing cavity is arranged on 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 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 respectively communicated with the first oil way and the second oil way; 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 provided with an oil drain hole communicated with the oil collecting groove; the external part of the coolant flows from the first oil path to the front bearing chamber and cools one end of the motor shaft, and the external part of the coolant flows from the second oil path to the rear bearing chamber and cools the other end of the motor shaft. .
The cooling runner comprises two sub-runners, each sub-runner is a circuitous groove extending from the top to the bottom of the inner wall of the shell, one sub-runner is communicated with the first oil way, and the other sub-runner is communicated with the second oil way.
The preferred scheme is that the inner wall of the shell is provided with a first reflux groove and a second reflux groove which extend from the bottom of the inner wall of the shell to the top, one end of the first reflux groove is communicated with one of the branch channels, the other end of the first reflux groove is communicated with the first oil way, one end of the second reflux groove is communicated with the other branch channel, and the other end of the second reflux groove is communicated with the second 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.
In combination with the technical scheme, the invention has the beneficial effects that: when the motor runs, the heat of the rotor is transferred to the evaporation section of the motor rotating shaft, the heat of the evaporation section in the motor rotating shaft is transferred to the condensation section, cooling oil is injected into the cooling flow passage from the oil injection port, the cooling oil in the cooling flow passage respectively enters the first oil way and the second oil way, the cooling oil in the first oil way and the second oil way cools the condensation section and lubricates the motor rotating shaft and the bearing, and the friction force in the rotating process of the motor rotating shaft is reduced; meanwhile, the cooling liquid in the condensing section flows back into the evaporating section to continuously absorb the heat of the evaporating section, thereby prolonging the service life of the invention
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 schematic view of a motor shaft according to the present invention;
FIG. 2 is a perspective view of the present invention;
FIG. 3 is a cross-sectional view of the present invention;
FIG. 4 is an exploded view of the present invention;
Fig. 5 is a cross-sectional view of the rear end cap of the present invention.
Detailed Description
In the first embodiment, as shown in fig. 1, the arrow in fig. 1 indicates the flow direction of hot air, and a motor shaft 600 includes a shaft body, in which a cavity is formed, and the shaft body is sequentially divided into an evaporation section 602 and a condensation section 604 from the middle to the end.
Preferably, a wick 605 is disposed in the cavity to allow liquid in the cavity to flow back, and the wick 605 can allow liquid in the cavity to flow back quickly, increasing the heat transfer between the evaporator end 602 and the condenser end 604.
Preferably, the shaft body further comprises a heat insulation section 603, wherein the heat insulation section 603 is located between the evaporation section 602 and the condensation section 604.
The motor rotating shaft 600 utilizes evaporation refrigeration, so that the temperature difference at two ends of the motor rotating shaft 600 is large, and heat is quickly conducted. The inside of the motor shaft 600 is pumped to a negative pressure state, and is filled with a proper liquid, which has a low boiling point and is easily volatilized. The spindle body has a cavity therein with a wick 605, which is formed of a capillary porous material. When the middle section of the motor rotating shaft 600 is heated, the liquid in the capillary tube is quickly evaporated, the vapor flows to the condensing section 604 under a tiny pressure difference, heat is released, the vapor is condensed into liquid again, the liquid flows back to the evaporating section 602 along the porous material by the action of capillary force, and the heat is transferred from the middle section of the motor rotating shaft 600 to the two ends. This cycle is rapid and heat is conducted continuously.
As shown in fig. 1 to 5, a motor shaft 600 shaft type oil-cooled motor according to the second embodiment includes a casing 100, a front cover 200, a rear cover 300, a stator 400, a rotor 500 and a motor shaft 600; one end of the machine shell 100 is in sealing connection with the front end cover 200, the other end of the machine shell 100 is in sealing connection with the rear end cover 300, a sealing cavity is formed among the machine shell 100, the front end cover 200 and the rear end cover 300, a front bearing chamber 201 is arranged in the center of the front end cover 200, a rear bearing chamber 301 is arranged in the center of the rear end cover 300, bearings 601 supporting a motor rotating shaft 600 are respectively arranged in the front bearing chamber 201 and the rear bearing chamber 301, a first oil way which is pointed by the edge to the front bearing chamber 201 is arranged in the front end cover 200, a second oil way 302 which is pointed by the edge to the rear bearing chamber 301 is arranged in the rear end cover 300, an oil filling port 101 which is communicated with the sealing cavity is arranged on the top wall of the machine shell 100, a groove is formed between the groove and the stator 400, one end of the cooling flow passage 103 is communicated with the oil filling port 101, and the other end of the cooling flow passage 103 is respectively communicated with the first oil way and the second oil way 302; the first oil passage and the second oil passage 302 are identical in structure. The bottom of the inner wall of the shell 100 is provided with an oil collecting groove 104, and the front end cover 200 or the rear end cover 300 is provided with an oil drain hole communicated with the oil collecting groove 104; the external part of the coolant flows from the first oil passage to the front bearing chamber 201 and cools one end of the motor shaft, and the part flows from the second oil passage 302 to the rear bearing chamber 301 and cools the other end of the motor shaft.
As shown in fig. 1 to 5, when the motor is operated, heat of the rotor 500 is transferred to the evaporation section 602 of the motor shaft 600, heat of the evaporation section 602 is transferred to the condensation section 604, cooling oil is injected into the cooling flow passage 103 from the oil injection port 101, the cooling oil in the cooling flow passage 103 enters the first oil passage and the second oil passage 302, respectively, the cooling oil in the first oil passage and the second oil passage 302 enters the front bearing chamber 201 and the rear bearing chamber 301, and the cooling oil in the front bearing chamber 201 and the rear bearing chamber 301 cools the condensation section 604 of the motor shaft 600 and lubricates the motor shaft 600 and the bearing 601, thereby reducing friction force in the rotation process of the motor shaft 600.
Specifically, as shown in fig. 1 to 5, the cooling flow passage 103 includes two sub-flow passages, each of which is a detour groove extending from the top to the bottom of the inner wall of the casing 100, wherein one of the sub-flow passages is communicated with the first oil passage, and the other sub-flow passage is communicated with the second oil passage 302, and the detour groove extends the travel through which the cooling oil flows, so that the heat generated in the motor can be better carried out. The inner wall of the casing 100 is provided with a first backflow groove 105 and a second backflow groove extending from the bottom of the inner wall of the casing 100 to the top, one end of the first backflow groove 105 is communicated with one of the flow paths, the other end of the first backflow groove is communicated with the first oil path, one end of the second backflow groove is communicated with the other flow path, and the other end of the second backflow groove is communicated with the second oil path 302. The first and second reflow channels 105 and 105 are identical in structure. Cooling oil enters from the oil filling port 101, part of the cooling oil flows to one of the sub-channels, the cooling oil in the sub-channel flows to a first oil way through the first reflux groove 105, and the cooling oil in the first oil way cools and lubricates one end of the motor rotating shaft 600; part of the cooling oil flows to the other sub-flow channel, the cooling oil in the sub-flow channel flows to the second oil circuit 302 through the second reflux groove, and the cooling oil in the second oil circuit 302 cools and lubricates the other end of the motor rotating shaft 600; the cooling oil cools both ends of the motor shaft 600 and flows to the oil sump 104, and finally the cooling oil flows out from the oil drain hole.
Preferably, as shown in fig. 3, the oil retainer 303 extends from the inner wall of the front end cover 200 or the rear end cover 300, the oil retainer 303 is sleeved outside the bearing 601, and the width of the oil retainer 303 is not smaller than the width of the bearing 601.
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 (5)
1. An evaporative cooling shaft type oil-cooled motor comprises a shell, a front end cover, a rear end cover, a stator and a rotor; one end and the front end housing sealing connection of casing, the other end and rear end housing sealing connection, form sealed cavity between casing, front end housing and the rear end housing, its characterized in that still includes: a motor shaft;
The center of the front end cover is provided with a front bearing chamber, the center of the rear end cover is provided with a rear bearing chamber, and bearings for supporting a motor rotating shaft are respectively arranged in the front bearing chamber and the rear bearing chamber;
The motor rotating shaft comprises a rotating shaft body, a cavity is formed in the rotating shaft body, and the rotating shaft body is sequentially divided into an evaporation section and a condensation section from the middle part to the end part; a liquid suction core for enabling liquid in the cavity to flow back is arranged in the cavity, and the liquid suction core is made of capillary porous materials; the rotating shaft body further comprises a heat insulation section, and the heat insulation section is positioned between the evaporation section and the condensation section;
The front end cover is provided with a first oil way which is directed to the front bearing chamber from the edge; the rear end cover is provided with a second oil way which is directed to the rear bearing chamber from the edge, the top wall of the shell is provided with an oil filling port communicated with the sealing cavity, the inner wall of the shell is provided with a groove, 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 respectively communicated with the first oil way and the second oil way.
2. The evaporative cooling shaft type oil-cooled motor according to claim 1, wherein the bottom of the inner wall of the casing is provided with an oil sump, and the front end cover or the rear end cover is provided with an oil drain hole communicated with the oil sump; the external part of the coolant flows from the first oil path to the front bearing chamber and cools one end of the motor shaft, and the external part of the coolant flows from the second oil path to the rear bearing chamber and cools the other end of the motor shaft.
3. The evaporative cooling shaft type oil-cooled motor of claim 2, wherein the cooling flow path includes two sub-flow paths, each of the sub-flow paths is a detour groove extending from the top to the bottom of the inner wall of the casing, one of the sub-flow paths is communicated with the first oil path, and the other sub-flow path is communicated with the second oil path.
4. An evaporative cooling shaft type oil-cooled motor as set forth in claim 2 or 3 wherein the inner wall of the casing is provided with a first return groove and a second return groove extending from the bottom of the inner wall of the casing to the top, one end of the first return groove being in communication with one of the branch passages, the other end being in communication with the first oil passage, one end of the second return groove being in communication with the other branch passage, the other end being in communication with the second oil passage.
5. An evaporative cooling shaft type oil-cooled motor as set forth in claim 2 wherein the inner wall of the front end cover or the rear end cover is extended with a slinger which is fitted over the bearing and has a width not smaller than the width of the bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810045527.4A CN107994709B (en) | 2018-01-17 | 2018-01-17 | Motor rotating shaft and evaporative cooling shaft type oil-cooled motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810045527.4A CN107994709B (en) | 2018-01-17 | 2018-01-17 | Motor rotating shaft and evaporative cooling shaft type oil-cooled motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107994709A CN107994709A (en) | 2018-05-04 |
| CN107994709B true CN107994709B (en) | 2024-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810045527.4A Active CN107994709B (en) | 2018-01-17 | 2018-01-17 | Motor rotating shaft and evaporative cooling shaft type oil-cooled motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107994709B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111416464B (en) * | 2020-03-16 | 2021-03-16 | 清华大学 | Oil-water double circulation cooling motor casing |
| CN116418155A (en) * | 2021-12-31 | 2023-07-11 | 安徽威灵汽车部件有限公司 | Motor casing, motor and vehicle |
| CN115833453B (en) * | 2023-02-02 | 2023-04-11 | 福建巨洲电机有限公司 | Heat dissipation formula generator device |
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| CN107994709A (en) | 2018-05-04 |
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