CN105356637A - Evaporative cooling structure of motor rotor - Google Patents
Evaporative cooling structure of motor rotor Download PDFInfo
- Publication number
- CN105356637A CN105356637A CN201510907727.2A CN201510907727A CN105356637A CN 105356637 A CN105356637 A CN 105356637A CN 201510907727 A CN201510907727 A CN 201510907727A CN 105356637 A CN105356637 A CN 105356637A
- Authority
- CN
- China
- Prior art keywords
- rotor
- cooling
- stator
- tube connector
- condenser
- 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.)
- Pending
Links
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
- 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
- H02K9/20—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil wherein the cooling medium vaporises within the machine casing
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses an evaporative cooling structure of a motor rotor. The evaporative cooling structure includes an enclosure, a rotor and a stator, the stator is arranged in an inner cavity of the enclosure, the rotor is rotatably arranged in the stator, upper and lower ends of the rotor stretch out of the enclosure, and the evaporative cooling structure also includes a condenser, a cooling liquid box, a pump, a heat exchanger, a current limiter, a spray pipe, a steam collector, a cooling water jacket and a connecting pipe, a through hole is arranged in an axis direction of the rotor, the spray pipe is sleeved on the top of the through hole and is connected with the current limiter through the connecting pipe, the steam collector is sleeved on a bottom outer wall of the rotor and is connected with the condenser through the connecting pipe, the condenser is connected with the cooling liquid box through the connecting pipe, the cooling liquid box and the current limiter are connected with the heat exchanger through the connecting pipe, the cooling water jacket is arranged on an enclosure side wall, a liquid inlet of the cooling water jacket is connected with the cooling liquid box through the pump, and a liquid outlet is connected with the current limiter through the connecting pipe.
Description
Technical field:
The present invention relates to a kind of evaporation cooling construction of rotor, it belongs to technical field of motors.
Background technology:
Compared with conventional motors, high-speed electric expreess locomotive has that volume is little, power advantages of higher, but also therefore causes that high-speed electric expreess locomotive heating is high, the problem of heat radiation difficulty, and heating and heat dissipation problem along with the rotating speed of high-speed electric expreess locomotive and the raising of power remarkable all the more.And, in high-speed electric expreess locomotive because rotor surface area is little, be again moving component, its heat dissipation problem is more serious than stator.For magneto, more easily cause the risk that rotor permanent magnet high temperature demagnetizes.
The cooling of current high-speed electric expreess locomotive adopts air-cooled and liquid cooling mode mostly, but their cooling effect all shows slightly inadequate compared to the caloric value of high-speed high-power motor.Vapor cooling system utilizes during liquid gasification inhales thermal property in a large number, can greatly improve unit are heat exchange amount and can direct cooled rotor surface, there is the advantage that air-cooled and liquid cooling is incomparable.
But traditional rotor vapor cooling system directly liquid is sprayed onto rotor surface, becomes no longer suitable gradually when rotor linear resonance surface velocity is more and more higher.With root diameter be
rotating speed is the high-speed permanent magnetic magnetic suspension motor of 20000rpm is example, can calculate its linear resonance surface velocity and reach 125.6m/s, surperficial centripetal acceleration 26292G.When relative velocity more than 100m/s, centrifugal acceleration more than 20,000 times of gravity, the time of contact of liquid and rotor surface is negligible, and rotor surface can not keep moistening.Can knowing that the heat major part of rotor is by going out with the heat convection and radiant heat transfer of steam thus, only having small part to be taken away by the evaporation of surface liquid.
It is generally acknowledged in engineering that heat exchanger surface only has 30 ~ 300W/m to the heat exchange coefficient of steam
2k, and the heat exchange coefficient > 3000W/m that moisture film seethes with excitement at heat exchanger surface
2k, both differ by more than an order of magnitude.Therefore the transpiration-cooled method of rotor surface is more and more not enough for the Modern High-Speed motor that rotating speed is more and more higher, must find better cooling means.Meanwhile, because in rotor surface evaporation mode, cooling fluid can be splashed away from rotor surface, all be cooled liquid and steam of all parts of motor internal infiltrates, so the insulation of part in motor, resist chemical, anti-corrosion require all very high, casing also must be accomplished airtight.But the high-speed electric expreess locomotive shaft seal place linear velocity in upper example is also close to 100m/s, be difficult to the reliability ensureing sealing.
Therefore, necessary the deficiency solving prior art is improved to prior art.
Summary of the invention:
The present invention is the evaporation cooling construction providing a kind of rotor in order to solve above-mentioned prior art Problems existing.
The technical solution adopted in the present invention has: a kind of evaporation cooling construction of rotor, comprise casing, rotor and stator, described stator is located in the inner chamber of casing, rotor turns is located in stator, and the two ends up and down of rotor stretch in outside casing respectively, also comprise condenser, tank for coolant, pump, heat exchanger, flow restricter, jet pipe, steam accumulator, cooling jacket and tube connector, the axis direction of described rotor is provided with through hole, jet pipe is sheathed on through hole top, and jet pipe is connected with flow restricter by tube connector, steam accumulator is sheathed on the bottom outer wall of rotor, and steam accumulator is connected with condenser by tube connector, condenser is connected with tank for coolant by tube connector, tank for coolant is connected with heat exchanger respectively by tube connector with flow restricter, described cooling jacket is arranged on chassis sidewall, and the inlet of cooling jacket is connected with tank for coolant by pump, liquid outlet is connected with flow restricter by tube connector.
Further, the sidewall of described casing is provided with the cooling bath for installing cooling jacket.
Further, described cooling bath ringwise or spirality or snakelike.
The present invention has following beneficial effect:
1) the present invention is provided with through hole on rotor, and the linear resonance surface velocity of cooling fluid in this through hole is low, can form outstanding boiling heat transfer condition, greatly improve cooling effect, and linear resonance surface velocity is low on hole wall, easily realizes sealing;
2) when in the present invention, stator is by liquid cooling mode, other parts of motor can contact cooling fluid, and then reduce electrical machine insulation and anticorrosive grade.
Accompanying drawing illustrates:
Fig. 1 is structure chart of the present invention.
Wherein:
1-casing; 2-rotor; 3-stator; 4-condenser; 5-tank for coolant; 6-pump; 7-heat exchanger; 8-flow restricter; 9-jet pipe; 10-steam accumulator; 11-cooling jacket; 21-through hole.
Embodiment:
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Please refer to shown in Fig. 1, the evaporation cooling construction of rotor of the present invention, comprise casing 1, rotor 2, stator 3, condenser 4, tank for coolant 5, pump 6, heat exchanger 7, flow restricter 8, jet pipe 9, steam accumulator 10, cooling jacket 11 and tube connector, wherein stator 3 is located in the inner chamber of casing 1, rotor 2 rotates and is arranged in stator 3, and the two ends up and down of rotor 2 stretch in outside casing 1 respectively, through hole 21 on the axis direction of rotor 2, jet pipe 9 is sheathed on the top of this through hole 21, and jet pipe 9 is connected with flow restricter 8 by tube connector.Steam accumulator 10 is sheathed on the bottom outer wall of rotor 2, and steam accumulator 10 is connected with condenser 4 by tube connector, and condenser 4 is connected with tank for coolant 5 by tube connector.Tank for coolant 5 is connected with heat exchanger 7 respectively by tube connector with flow restricter 8.Cooling jacket 11 is arranged on the sidewall of casing 1, and the inlet of cooling jacket 11 is connected by the outlet end of tube connector with pump 6, and the liquid feeding end of pump 6 is connected with tank for coolant 5 by tube connector, and the liquid outlet of cooling jacket 11 is connected with flow restricter 8 by tube connector.
The present invention is the cooling effect increasing cooling jacket 11 pairs of casings 1, and the sidewall of casing 1 is provided with the cooling bath for installing cooling jacket 11.This cooling bath can ringwise or spirality or snakelike.
With the root diameter in background technology be
rotating speed is the high-speed permanent magnetic magnetic suspension motor of 20000rpm is example, cooling fluid is injected in the through hole 21 (aperture φ 30) of rotor 2, the linear velocity of hole wall is 31.4m/s, centrifugal acceleration is 6573G.Because relative velocity is lower, the hole wall frictional heating of cooling fluid and through hole 21 is also lower; Simultaneously cooling fluid can form thin and uniform liquid film under the centrifugal acceleration effect of more than 6,000 times of gravity on hole wall, and steam collects from the center of trend through hole and discharged by bottom, thus forms outstanding tube wall surface boiling heat transfer condition.Because the efficiency of boiling heat transfer is higher than gas surface heat exchanging more than 10 times, although so built-in transpiration-cooled heat exchange area only has 1/4 of surface evaporation heat exchange, actual heat exchange amount can be high 3 ~ 5 times.Simultaneously due to the linear velocity of the through-hole wall of rotor 2 only have 1/4 of surface, girth also only has 1/4, so more easily realize good sealing, as long as use conventional contact sealing just can ensure sealing effectiveness.
The cooling of stator 3 realizes liquid cooling by the cooling jacket 11 on casing 1.The through hole 21 being all closed in rotor 2 due to cooling liquid and steam is inner, so other parts in motor can not touch cooling fluid, insulation and anticorrosive grade also can correspondingly reduce.
Except above-mentioned liquid cooling structure, the cooling of stator also can continue to use the vapor cooling system identical with rotor surface Steaming structure.Now in motor, part still needs higher insulation and anticorrosive grade, but stator cooling effect is better than liquid cooling.High-speed electric expreess locomotive is when the built-in evaporation cooling construction of use rotor, and the external structure of cooling system is identical with surface evaporation mode.Now it should be noted that the cooling liquid injected to internal rotor can not be too much, in case be full of rotor inner hole completely and deface boiling heat transfer condition, therefore need to increase flow restricter to regulate the flow of cooling fluid.
The above is only the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, can also make some improvement under the premise without departing from the principles of the invention, and these improvement also should be considered as protection scope of the present invention.
Claims (3)
1. the evaporation cooling construction of a rotor, comprise casing (1), rotor (2) and stator (3), described stator (3) is located in the inner chamber of casing (1), rotor (2) rotates to be located in stator (3), and the two ends up and down of rotor (2) stretch in casing (1) outward respectively, it is characterized in that: also comprise condenser (4), tank for coolant (5), pump (6), heat exchanger (7), flow restricter (8), jet pipe (9), steam accumulator (10), cooling jacket (11) and tube connector, the axis direction of described rotor (2) is provided with through hole (21), jet pipe (9) is sheathed on through hole (21) top, and jet pipe (9) is connected with flow restricter (8) by tube connector, steam accumulator (10) is sheathed on the bottom outer wall of rotor (2), and steam accumulator (10) is connected with condenser (4) by tube connector, condenser (4) is connected with tank for coolant (5) by tube connector, tank for coolant (5) is connected with heat exchanger (7) respectively by tube connector with flow restricter (8), described cooling jacket (11) is arranged on casing (1) sidewall, and the inlet of cooling jacket (11) is connected with tank for coolant (5) by pump (6), liquid outlet is connected with flow restricter (8) by tube connector.
2. the evaporation cooling construction of rotor as claimed in claim 1, is characterized in that: the sidewall of described casing (1) is provided with the cooling bath for installing cooling jacket (11).
3. the evaporation cooling construction of rotor as claimed in claim 2, is characterized in that: described cooling bath ringwise or spirality or snakelike.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510907727.2A CN105356637A (en) | 2015-12-09 | 2015-12-09 | Evaporative cooling structure of motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510907727.2A CN105356637A (en) | 2015-12-09 | 2015-12-09 | Evaporative cooling structure of motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105356637A true CN105356637A (en) | 2016-02-24 |
Family
ID=55332540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510907727.2A Pending CN105356637A (en) | 2015-12-09 | 2015-12-09 | Evaporative cooling structure of motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105356637A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106374660A (en) * | 2016-09-26 | 2017-02-01 | 南京磁谷科技有限公司 | Rotor return air cooling structure of magnetic suspension motor with isolated rotor |
| CN108975724A (en) * | 2018-08-23 | 2018-12-11 | 福莱特玻璃集团股份有限公司 | A kind of horizontal evaporation device for on-line coating glass production |
| CN109194033A (en) * | 2018-10-30 | 2019-01-11 | 常康华 | A kind of high efficiency and heat radiation motor |
| CN109309421A (en) * | 2017-07-27 | 2019-02-05 | 劳斯莱斯有限公司 | Motor device |
| FR3106943A1 (en) | 2020-02-05 | 2021-08-06 | Leviathan Dynamics | ROTOR COOLING DEVICE AND ROTATING MACHINE INCLUDING IT |
| CN113472112A (en) * | 2021-08-05 | 2021-10-01 | 威海西立电子有限公司 | Rotor cooling method and system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1322289A (en) * | 1998-10-09 | 2001-11-14 | 美国标准公司 | Oil-free liquid chiller |
| CN101640452A (en) * | 2009-08-24 | 2010-02-03 | 中国科学院电工研究所 | Liquid supplying and draining device of evaporating and cooling system of water wheel generator stator |
| CN102497049A (en) * | 2011-11-28 | 2012-06-13 | 中国科学院电工研究所 | Stator evaporative cooling device |
| CN202405952U (en) * | 2011-11-29 | 2012-08-29 | 上海海光电机有限公司 | Motor with cooling system |
| CN102820738A (en) * | 2012-08-17 | 2012-12-12 | 中国科学院电工研究所 | Spray type motor stator evaporative cooling system |
| CN103765735A (en) * | 2011-09-20 | 2014-04-30 | 日立建机株式会社 | Generator motor and electric vehicle using same |
| CN205195458U (en) * | 2015-12-09 | 2016-04-27 | 南京磁谷科技有限公司 | Electric motor rotor's evaporation cooling structure |
-
2015
- 2015-12-09 CN CN201510907727.2A patent/CN105356637A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1322289A (en) * | 1998-10-09 | 2001-11-14 | 美国标准公司 | Oil-free liquid chiller |
| CN101640452A (en) * | 2009-08-24 | 2010-02-03 | 中国科学院电工研究所 | Liquid supplying and draining device of evaporating and cooling system of water wheel generator stator |
| CN103765735A (en) * | 2011-09-20 | 2014-04-30 | 日立建机株式会社 | Generator motor and electric vehicle using same |
| CN102497049A (en) * | 2011-11-28 | 2012-06-13 | 中国科学院电工研究所 | Stator evaporative cooling device |
| CN202405952U (en) * | 2011-11-29 | 2012-08-29 | 上海海光电机有限公司 | Motor with cooling system |
| CN102820738A (en) * | 2012-08-17 | 2012-12-12 | 中国科学院电工研究所 | Spray type motor stator evaporative cooling system |
| CN205195458U (en) * | 2015-12-09 | 2016-04-27 | 南京磁谷科技有限公司 | Electric motor rotor's evaporation cooling structure |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106374660A (en) * | 2016-09-26 | 2017-02-01 | 南京磁谷科技有限公司 | Rotor return air cooling structure of magnetic suspension motor with isolated rotor |
| CN109309421A (en) * | 2017-07-27 | 2019-02-05 | 劳斯莱斯有限公司 | Motor device |
| CN108975724A (en) * | 2018-08-23 | 2018-12-11 | 福莱特玻璃集团股份有限公司 | A kind of horizontal evaporation device for on-line coating glass production |
| CN109194033A (en) * | 2018-10-30 | 2019-01-11 | 常康华 | A kind of high efficiency and heat radiation motor |
| FR3106943A1 (en) | 2020-02-05 | 2021-08-06 | Leviathan Dynamics | ROTOR COOLING DEVICE AND ROTATING MACHINE INCLUDING IT |
| WO2021156470A1 (en) * | 2020-02-05 | 2021-08-12 | Leviathan Dynamics | Rotor-cooling device and rotating machine comprising same |
| CN113472112A (en) * | 2021-08-05 | 2021-10-01 | 威海西立电子有限公司 | Rotor cooling method and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105356637A (en) | Evaporative cooling structure of motor rotor | |
| CN101183808B (en) | Stator structure of inner cooling type self-circulation vaporization cooling wind power generator | |
| WO2018153001A1 (en) | Motor cooling structure, power motor and electric drive system | |
| CN101751096B (en) | Evaporation-cooled device attached to surface of super computer | |
| CN202129679U (en) | High-speed electric main shaft cooling device for lowering temperature of cooling water through semiconductor refrigeration technology | |
| CN207677574U (en) | A kind of radiating motor | |
| CN110456893A (en) | A kind of cooling cabinet of enhanced immersion type | |
| CN202405953U (en) | Permanent magnet motor with automatic control cooling system | |
| CN107911999A (en) | A kind of modularization liquid-cooled suit business device cabinet | |
| CN218868028U (en) | Permanent magnet synchronous generator | |
| CN206250348U (en) | A kind of plug-in hybrid sanitation cart cooling system | |
| CN205195458U (en) | Electric motor rotor's evaporation cooling structure | |
| CN204944230U (en) | A kind of energy-saving cooling tower | |
| CN109412341A (en) | A kind of rotor vacuumizes cooling high-speed permanent magnet motor system | |
| CN205178774U (en) | High speed motor evaporation cooling structure | |
| Chen et al. | Study of heat pipe in motor cooling: A review | |
| CN108733181A (en) | Cooled plate mechanism for cabinet | |
| CN207819620U (en) | A kind of motor field frame and motor | |
| CN206323238U (en) | A kind of motor cools down auxiliary smoke discharging structure | |
| CN206488658U (en) | A kind of EC centrifugal fans low noise cooling tower | |
| CN206379842U (en) | A kind of high temperature resistant permanent-magnet brushless DC electric machine | |
| CN206180778U (en) | In -wheel motor intracavity spray cooling heat radiation structure | |
| CN204190597U (en) | A kind of cooling system for converter | |
| CN105356672A (en) | High-speed motor evaporative cooling structure | |
| CN205537183U (en) | Novel magnetic suspension bearing hydraulic turbine cooling tower |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160224 |