CN207039328U - Rotor liquid cooling structure - Google Patents
Rotor liquid cooling structure Download PDFInfo
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- CN207039328U CN207039328U CN201720721711.7U CN201720721711U CN207039328U CN 207039328 U CN207039328 U CN 207039328U CN 201720721711 U CN201720721711 U CN 201720721711U CN 207039328 U CN207039328 U CN 207039328U
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- cooling structure
- liquid cooling
- rotor
- rotor liquid
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Abstract
The utility model belongs to machine field, specifically provides a kind of rotor liquid cooling structure.The utility model aim to solve the problem that the cooling structure of rotor in the prior art easily make cooling water into motor internal motor is caused damage the problem of.For this purpose, rotor liquid cooling structure of the present utility model includes being provided with the rotating shaft of shaft hole, end cap and cooling water pipe for supporting rotating shaft, one end of cooling water pipe is connected with end cap, and the other end of cooling water pipe is extended in shaft hole.Further, the one end of rotating shaft away from end cap is provided with the air-vent of connection shaft hole.Rotor liquid cooling structure of the present utility model is circulated in can making water in cooling water pipe, and absorbs the heat of rotor indirectly by absorbing the heat of cooling water pipe.Therefore, the water in rotor liquid cooling structure of the present utility model can be circulated in cooling water pipe all the time, motor internal will not be caused to corrode and damaged into motor internal.
Description
Technical field
The utility model belongs to machine field, specifically provides a kind of rotor liquid cooling structure.
Background technology
The motor of high power density is usually associated with very high temperature rise in the process of running, in order to avoid motor is because of rotor mistake
Heat and be damaged, cooling body is usually provided with rotor to reduce the temperature rise of rotor.It is general at present to turn using in motor
Open-blind hole on axle, and cooling water is directly contacted with the blind hole inwall of rotating shaft so as to by way of rotating shaft absorption rotor heat.
But such a type of cooling needs rotating seal to seal rotor, to avoid cooling water from entering motor internal.But
Also there is the problem of very big in the reliability of rotatory sealing, it is easy to occur because leak causes motor impaired existing at this stage
As.
Correspondingly, this area needs a kind of new rotor cooling structure to solve the above problems.
Utility model content
It has been that the cooling structure for solving rotor in the prior art holds to solve above mentioned problem of the prior art
Easily make cooling water into motor internal motor is caused damage the problem of, the utility model provides a kind of rotor liquid cold junction
Structure, the motor include casing, end cap, stator, rotor and rotating shaft, first passage and second channel are provided with the end cap,
It is axially disposed in the rotating shaft to have shaft hole, it is characterised in that the rotor liquid cooling structure includes：Installation end, it is fixed on
The end of the motor；And colling end, it can be contained in the shaft hole, and the colling end is formed with cooling duct；
Wherein, the cooling duct is connected by the installation end with the first passage and the second channel.
In the optimal technical scheme of above-mentioned rotor liquid cooling structure, the colling end includes the first pipeline and is arranged
Second pipe on the outside of first pipeline, and the one end of first pipeline away from the installation end and the second pipe
Connection, the inner chamber of first pipeline and forms the cooling by the ring cavity between first pipeline and the second pipe
Passage.
In the optimal technical scheme of above-mentioned rotor liquid cooling structure, the installation end is provided with first through hole and second
Through hole, the first through hole can connect the inner chamber and the first passage, and second through hole can connect the ring cavity
With the second channel.
In the optimal technical scheme of above-mentioned rotor liquid cooling structure, the installation end and the colling end one into
Type.
In the optimal technical scheme of above-mentioned rotor liquid cooling structure, in the second pipe and institute in the shaft hole
State and be filled partially with heat-conducting medium between shaft hole.
In the optimal technical scheme of above-mentioned rotor liquid cooling structure, air-vent is provided with the rotating shaft, it is described to lead
Thermal medium is filled to the shaft hole via the air-vent.
In the optimal technical scheme of above-mentioned rotor liquid cooling structure, the heat-conducting medium is modified silicon oil.
In the optimal technical scheme of above-mentioned rotor liquid cooling structure, the air-vent is provided with vent valve.
In the optimal technical scheme of above-mentioned rotor liquid cooling structure, the vent valve is one-way ventilating valve.
In the optimal technical scheme of above-mentioned rotor liquid cooling structure, the rotor liquid cooling structure also includes shunting
Device, the installation end are fixedly connected by the current divider with the end of the motor.
It will be appreciated to those of skill in the art that in optimal technical scheme of the present utility model, it is cold by that will have
But the colling end of the rotor liquid cooling structure of passage is arranged in the shaft hole of rotating shaft so that in motor operation course caused by rotor
Heat can be conducted on colling end.By the end that the installation end of rotor liquid cooling structure is fixed on to motor so that cooling
Passage can connect with the first passage on electric motor end cap and second channel, and then coolant can inhale colling end from rotating shaft
The heat of receipts is taken away.Therefore, the coolant (such as water) in rotor liquid cooling structure of the present utility model can be cold in rotor liquid all the time
Circulated in structure, motor internal will not be caused to corrode and damaged into motor internal.
Further, modified silicon oil is injected into shaft hole by the air-vent in rotating shaft, and makes shaft hole inwall and cooling
Annular chamber between the outer wall of end is full of modified silicon oil, can effectively improve the rate of heat exchange between rotating shaft and colling end, so as to
The radiating rate of rotor is improved, adds the service life of motor.
Brief description of the drawings
Fig. 1 is the sectional view of the rotor liquid cooling structure of the utility model embodiment；
Fig. 2 is the effect diagram of the cooling water pipe of the rotor liquid cooling structure of the utility model embodiment.
Reference numerals list：
1st, end cap；11st, first passage；12nd, second channel；2nd, rotor；3rd, rotating shaft；31st, shaft hole；32nd, air-vent；33、
Screwed hole；4th, cooling water pipe；41st, the first pipeline；411st, inner chamber；42nd, second pipe；421st, annular chamber；43rd, installation end；431、
First through hole；432nd, the second through hole；433rd, mounting hole；434th, annular groove；5th, current divider；51st, first mouth of a river；52nd, second mouth of a river；
6th, the first sealing ring；7th, the second sealing ring；8th, the 3rd sealing ring.
Embodiment
Preferred embodiment of the present utility model described with reference to the accompanying drawings.It should be understood by those skilled in the art that
It is that these embodiments are used only for explaining technical principle of the present utility model, are not intended to limit protection of the present utility model
Scope.Although for example, preferred embodiment of the present utility model be with reference to accompanying drawing by taking the rotor liquid cooling structure of motor as an example come pair
What rotor liquid cooling structure of the present utility model illustrated, however, it will be apparent that rotor liquid cooling structure of the present utility model may be used also
To have applied to other on the product of rotor structure, such as hydraulic oil pump, those skilled in the art can make to it as needed
Go out adjustment, to adapt to specific application scenario, the technical scheme after adjustment will fall into this protection domain.
It should be noted that in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the direction of instruction such as " level ", " interior ", " outer " or the term of position relationship are closed based on direction shown in the drawings or position
System, this is intended merely to facilitate description, rather than instruction or hint described device or element must have specific orientation, Yi Te
Fixed azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.In addition, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that instruction or hint relative importance.
In addition it is also necessary to explanation, in description of the present utility model, unless otherwise clearly defined and limited, art
Language " installation ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or
It is integrally connected；Can be mechanical connection or electrical connection；Can be joined directly together, can also be by between intermediary
Connect connected, can be the connection of two element internals.To those skilled in the art, can understand as the case may be above-mentioned
Concrete meaning of the term in the utility model.
As shown in figure 1, motor of the present utility model mainly include casing (not shown), current divider 5, stator (not shown),
Rotor 2 and rotating shaft 3.Rotor liquid cooling structure of the present utility model mainly includes rotating shaft 3, cooling water pipe 4 and current divider 5.Its
In, the installation end 43 (lower end of cooling water pipe 4 in Fig. 1) of cooling water pipe 4 is fixedly connected, the cooling of cooling water pipe 4 with current divider 5
End (upper part of the cooling water pipe 4 in addition to installation end 43 in Fig. 1) is placed in rotating shaft 3.Wherein, current divider 5 is fixedly installed to machine
The inner side of shell end, such as it is installed on electric motor end cap 1.Specifically, the lower end of cooling water pipe 4 (referring to Fig. 2) and current divider in Fig. 1
5 are fixedly connected, and are preferably connected by screw bolts between cooling water pipe 4 and current divider 5, or those skilled in the art can also lead to
Cross other any and feasible connected modes cooling water pipe 4 is fixed on current divider 5, such as weld.In addition this area
Cooling water pipe 4 and current divider 5 can also be integrally molded so as an overall structure by technical staff.
Further, as shown in figure 1, the lower end of rotating shaft 3 is axially disposed a shaft hole 31, the upper end of rotating shaft 3 is set in Fig. 1
There is air-vent 32.Please referring also to Fig. 1 and Fig. 2, the major part of the upside of cooling water pipe 4 can extend in shaft hole 31, filling
In the state of preparing, there is certain gap between the outer wall of cooling water pipe 4 and the inwall of shaft hole 31.Further, by saturating
Stomata 32 is filled into the gap such as the heat-conducting medium of modified silicon oil, will be hot caused by rotor in motor operation course 2
Amount is quickly transmitted to cooling water pipe 4, effectively improves thermal conduction rate.Further, to prevent motor in use, turn
Modified silicon oil in axis hole 31 overflows from air-vent 32, and the upper end of air-vent 32 is provided with screwed hole 33 in Fig. 1, to install list
To vent valve (not shown).Also, the pressure and ambient atmosphere in shaft hole 31 can also be made by the one-way ventilating valve
Pressure remains identical, prevents the internal cause hypertonia of shaft hole 31 from extruding modified silicon oil.Wherein, one-way ventilating valve can be this
Art personnel it is conceivable that and any type of apparatus structure that can implement, such as axle center there is the bolt of pin hole.
It should be noted that ensureing between rotating shaft 3 and cooling water pipe 4 on the premise of thermal conduction rate, art technology
Personnel can also the size in the gap between the inwall of countershaft 3 and the outer wall of cooling water pipe 4 as needed suitably adjusted, it is clear that adjust
Technical scheme after whole will fall into the scope of protection of the utility model.It should also be noted that, ensureing sealing, heat transfer
Property, on the premise of soaking resistance and easy fillibility, those skilled in the art can also use other heat-conducting mediums to substitute modified silicon oil,
For example, hydraulic oil.
As depicted in figs. 1 and 2, mainly including installation end 43 and colling end, (cooling water pipe 4 is except installation in Fig. 1 for cooling water pipe 4
Upper part outside end 43).Wherein, installation end 43 is fixedly connected by bolt with current divider 5, and colling end is ensureing cooling water pipe
In the case of gap is present between 4 outer wall and the inwall of shaft hole 31, it can be fully received in shaft hole 31.Enter one
Step, colling end include the first pipeline 41 and second pipe 42, and the lower end of the first pipeline 41 and second pipe 42 with installation
End 43 is fixedly connected, it is preferable that the first pipeline 41, second pipe 42 and installation end 43 are integrally formed, or people in the art
First pipeline 41 and second pipe 42 can be also fixed on installation end 43 by member as desired by other connected modes, such as will
The mode that first pipeline 41, second pipe 42 are connected through a screw thread or welded is fixed on installation end 43.
As shown in figure 1, the first pipeline 41 is located in second pipe 42, and the upper end of the first pipeline 41 and second pipe 42
It is connected so that the annular chamber 421 between the pipeline 41 of inner chamber 411 and first and second pipe 42 of the first pipeline 41 forms cooling
Passage.In addition those skilled in the art can also be as needed, and annular chamber 421 is arranged to the ring cavity of other structures, such as edge
The ring cavity of the screw type of the axis direction of first water pipe 41.
As shown in figure 1, first passage 11 and second channel 12 are provided with end cap 1.First mouth of a river is provided with current divider 5
51 and second mouth of a river 52, and when current divider 5 is fixed on end cap 1, first mouth of a river 51 can connect with first passage 11, the
Two mouths of a river 52 can connect with second channel 12.In a kind of possible embodiment, it is provided with casing and is mainly used in cooling down
The spiral shape cooling duct of stator is simultaneously provided with two openings for coolant disengaging.By by spiral shape cooling duct and end cap
First passage 11 on 1 connects with second channel 12, you can to realize coolant while stator is cooled down, by making coolant
Into the mode for the cooling water pipe 4 being placed in rotating shaft, coolant is set further to cool down rotor by rotating shaft 3.Further, preferably
Ground, current divider 5 are bolted to connection with end cap 1, or those skilled in the art can also be any and feasible by other
Connected mode current divider 5 is fixed on end cap 1, such as weld.In addition those skilled in the art can also be by end cap 1
An overall structure is integrally molded so as with current divider 5.It should be appreciated that in preferred embodiment of the present utility model, point
Stream device 5 is applied not only to the installation end 43 of cooling water pipe 4 being fixed on end cap 1, is additionally operable to the He of first passage 11 on end cap 1
Second channel 12 connects with inner chamber 411 and annular chamber 421 respectively, coolant is flowed through inner chamber 411 and annular chamber 421.
As depicted in figs. 1 and 2, first through hole 431, the second through hole 432 and mounting hole 433 are provided with installation end 43.Its
In, first through hole 431 is connected with inner chamber 411, and the second through hole 432 is connected with annular chamber 421.It is also, logical in installation end 43
Cross through mounting hole 433 when being bolted on current divider 5, first through hole 431 is connected with first mouth of a river 51, the second through hole
432 are connected with second mouth of a river 52, and then first passage 11 is connected with inner chamber 411, and second channel 12 is connected with annular chamber 412
It is logical.So that coolant (such as water) can enter inner chamber 411 from first passage 11 through first mouth of a river 51 and first through hole 431, then
Annular chamber 421 is flowed through to flow out from second channel 12 through the second through hole 432 and second mouth of a river 52.Or those skilled in the art may be used also
So that coolant flows into cooling duct from second channel 12, flowed out from first passage 11.
Fig. 1 and Fig. 2 are further regarded to, rotor liquid cooling structure of the present utility model also includes being placed in ring on installation end 43
The first sealing ring 6 in shape groove 434.In the assembled state, current divider 5 and installation end 43 can compress the first sealing ring 6,
Prevent the modified silicon oil in shaft hole 31 from being leaked from the junction of current divider 5 and installation end 43.Further, current divider 5 and end cap 1
Between be provided with the second sealing ring 7, for preventing the coolant in first passage 11 and second channel 12 from entering motor internal pair
The electric elements of motor internal cause to damage.Further, the lower end of rotating shaft 3 has been disposed radially the 3rd sealing ring 8 and used in Fig. 1
In preventing the modified silicon oil in shaft hole 31 from entering motor internal, change sealing ring and be preferably rotatory sealing.
It will be appreciated to those of skill in the art that because the sealing of modified silicon oil is better than water, so passing through current divider 5
Rotating seal ring between rotating shaft 3 just effectively can play sealing function to modified silicon oil.Those skilled in the art can also
Understand, because modified silicon oil has good dielectric strength, even if modified silicon oil entered motor internal also will not be right
Motor causes to damage.It will be readily appreciated by those skilled in the art that end cap 1 and cooling water pipe 4 are attached by current divider 5,
The sealing property between the processing technology of end cap 1 and each part can effectively be optimized.
Those skilled in the art are also understood that, in optimal technical scheme of the present utility model, pass through shaft hole
Heat caused by rotor can be quickly transmitted to cooling water by the modified silicon oil between 13 inwall and the outer wall of cooling water pipe 4
Pipe 4, then the heat of cooling water pipe 4 is taken away by flowing through the coolant in cooling water pipe 4.So of the present utility model turn
Coolant in sub- liquid cooling structure can be circulated in cooling water pipe 4 all the time, will not enter motor internal to motor internal
Cause to corrode and damage.
It should be noted that the above coolant is preferably water, or those skilled in the art can be with root
According to needing to use other coolants, such as hydraulic oil.
So far, combined preferred embodiment shown in the drawings describes the technical solution of the utility model, still, this
Art personnel are it is easily understood that the scope of protection of the utility model is expressly not limited to these embodiments.
On the premise of principle of the present utility model, those skilled in the art can make equivalent change to correlation technique feature
Or replace, the technical scheme after these are changed or replaced it is fallen within the scope of protection of the utility model.
Claims (10)
1. a kind of rotor liquid cooling structure, the motor includes casing, end cap, stator, rotor and rotating shaft, is set on the end cap
It is equipped with first passage and second channel, it is axially disposed in the rotating shaft to have shaft hole, it is characterised in that the rotor liquid cold junction
Structure includes：
Installation end, it is fixed on the end of the motor；And
Colling end, it can be contained in the shaft hole, and the colling end is formed with cooling duct；
Wherein, the cooling duct is connected by the installation end with the first passage and the second channel.
2. rotor liquid cooling structure according to claim 1, it is characterised in that the colling end include the first pipeline with
And the second pipe on the outside of first pipeline is sheathed on, and the one end of first pipeline away from the installation end and described the
Two pipeline communications,
The inner chamber of first pipeline and the cooling is formed by the ring cavity between first pipeline and the second pipe
Passage.
3. rotor liquid cooling structure according to claim 2, it is characterised in that the installation end is provided with first through hole
With the second through hole, the first through hole can connect the inner chamber and the first passage, and second through hole can connect institute
State ring cavity and the second channel.
4. rotor liquid cooling structure according to claim 1, it is characterised in that the installation end and the colling end one
It is body formed.
5. the rotor liquid cooling structure according to Claims 2 or 3, it is characterised in that described the in the shaft hole
Heat-conducting medium is filled partially between two pipelines and the shaft hole.
6. rotor liquid cooling structure according to claim 5, it is characterised in that air-vent is provided with the rotating shaft,
The heat-conducting medium is filled to the shaft hole via the air-vent.
7. rotor liquid cooling structure according to claim 6, it is characterised in that the heat-conducting medium is modified silicon oil.
8. rotor liquid cooling structure according to claim 6, it is characterised in that the air-vent is provided with vent valve.
9. rotor liquid cooling structure according to claim 8, it is characterised in that the vent valve is one-way ventilating valve.
10. rotor liquid cooling structure according to any one of claim 1 to 4, it is characterised in that the rotor
Liquid cooling structure also includes current divider, and the installation end is fixedly connected by the current divider with the end of the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720721711.7U CN207039328U (en) | 2017-06-20 | 2017-06-20 | Rotor liquid cooling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720721711.7U CN207039328U (en) | 2017-06-20 | 2017-06-20 | Rotor liquid cooling structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207039328U true CN207039328U (en) | 2018-02-23 |
Family
ID=61468569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720721711.7U Active CN207039328U (en) | 2017-06-20 | 2017-06-20 | Rotor liquid cooling structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207039328U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107231049A (en) * | 2017-06-20 | 2017-10-03 | 上海蔚来汽车有限公司 | Rotor liquid cooling structure |
| CN110504774A (en) * | 2018-05-18 | 2019-11-26 | 保时捷股份公司 | Rotor with end disk |
| EP4199319A4 (en) * | 2021-01-05 | 2024-04-24 | Jing Jin Electric Tech Co Ltd | Rotor structure for reducing operating temperature in shaft |
-
2017
- 2017-06-20 CN CN201720721711.7U patent/CN207039328U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107231049A (en) * | 2017-06-20 | 2017-10-03 | 上海蔚来汽车有限公司 | Rotor liquid cooling structure |
| CN107231049B (en) * | 2017-06-20 | 2023-07-07 | 上海蔚来汽车有限公司 | Liquid cooling structure of motor rotor |
| CN110504774A (en) * | 2018-05-18 | 2019-11-26 | 保时捷股份公司 | Rotor with end disk |
| CN110504774B (en) * | 2018-05-18 | 2022-04-05 | 保时捷股份公司 | Rotor with end disc assembly |
| EP4199319A4 (en) * | 2021-01-05 | 2024-04-24 | Jing Jin Electric Tech Co Ltd | Rotor structure for reducing operating temperature in shaft |
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