CN202872571U - Cooling system for high power density permanent magnetic motor - Google Patents
Cooling system for high power density permanent magnetic motor Download PDFInfo
- Publication number
- CN202872571U CN202872571U CN 201220568576 CN201220568576U CN202872571U CN 202872571 U CN202872571 U CN 202872571U CN 201220568576 CN201220568576 CN 201220568576 CN 201220568576 U CN201220568576 U CN 201220568576U CN 202872571 U CN202872571 U CN 202872571U
- Authority
- CN
- China
- Prior art keywords
- cooling
- permanent magnet
- wind
- permanent magnetic
- motor
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Motor Or Generator Cooling System (AREA)
Abstract
The utility model relates to a cooling system for a high power density permanent magnetic motor. The cooling system consists of water-air jackets and a permanent magnetic motor inner cooling air way, and is characterized in that the water-air jackets are disposed on an outer side of a permanent magnetic motor stator; the water jacket is in close contact connection with a permanent magnetic motor stator iron core; the air jacket is disposed on an outer side of the water jacket, and is communicated with the permanent magnetic motor inner cooling air way to form a circular cooling air way; the permanent magnetic motor inner cooling air way consists of a cooling fan, or a draught fan, and an axial air hole and radial ventilating ducts which are disposed on a permanent magnetic motor rotor; and a direction of liquid inside the water-air jackets is opposite to gas flow direction in the circular cooling air way. The cooling system is structurally reasonably designed, has good cooling effect and reliable operation performance, and is especially suitable for cooling an SMD (surface mounted device) type permanent magnetic motor.
Description
Technical field
The utility model relates to a kind of magneto cooling system, especially a kind of cooling system of surface-mount type structure high power density permanent magnet motor.
Background technology
The type of cooling of magneto sums up at present, mainly contains following several:
1) fan, blower fan cooling
Most of magnetoes employing axial-flow type or centrifugal fan, blower fan cool off, and adopt the type type of cooling, and the cooling effect of motor is limited, volume is larger, reliability is low, can't satisfy boats and ships, electric automobile etc. to the requirement of motor volume, is difficult to realize the high power density design of motor.
2) cooler cooling
When employing air-water cooling devices etc. cooled off magneto, because the cooler volume is larger, although cooling effect of motor is better, the power density of motor was difficult to promote, and motor exists overall structure heavy, the drawbacks such as complexity.
Summary of the invention
The utility model is that a kind of high power density permanent magnet motor cooling system will be provided, and is used for solving cooling, the problem of temperature rise of magneto, realizes the high power density design of magneto.
For achieving the above object, the technical solution of the utility model is:
A kind of high power density permanent magnet motor cooling system, formed by water-wind cover and magneto internal cooling wind path, be characterized in: water-wind is placed on the permanent magnet motor stator outside, wherein, water jacket is connected with permanent magnet motor stator close contact unshakable in one's determination, wind is placed on the water jacket outside, and with magneto internal cooling wind path UNICOM, form the circulating cooling wind path; Magneto internal cooling wind path is made of axial wind hole, the radial ducts offered on cooling fan or blower fan and the permanent magnet machine rotor, and water-wind cover internal liquid is opposite with the gas flow in the circulating cooling wind path.
The axial wind hole of offering on the permanent magnet machine rotor is angling hole, and when motor rotated, under the effect of centrifugal force, angling hole produced blast, and uniting with fan or blower fan provides blast, is used for satisfying motor cooling air quantity needs.
The wind cover arranges the baffler that guides refrigerating gas cooling motor winding overhang with the ventilation notch place of motor internal cooling air duct UNICOM.Permanent magnet machine rotor is segmentation structure, and each intersegmental formation air channel is used for cutting down the magneto loss, strengthens cooling effect.
Add brace rod in the water jacket to form axially " S " type runner or spiral flow channel, install the radiating fin parallel with wind cover brace rod in the air channel of wind cover additional, the height of radiating fin is lower than brace rod or at wind cover brace rod and bottom surface, air channel radiating groove is set.
The beneficial effects of the utility model:
The utility model is realized the integral body cooling of motor internal rotor, permanent magnet, winding overhang and stator core by water jacket, wind cover, fan or the small-sized fan in the permanent magnet motor stator outside, reduce electric machine temperature rise, the heat load ability of lifting motor, thereby realize the high power density design of motor, its advantage mainly contains:
1) with wind path cooling and water route cooling combination, effectively increase the film-cooled heat of motor, improve the cooling effect of motor, can significantly promote the heat load ability of magneto, dwindle the volume of motor, save material, effectively utilize motor material, improve power of motor density.
2) promote the cooling effect of magneto, particularly evident to large capacity, high rotating speed, high-frequency class magneto effect, avoid the phenomenons such as permanent magnet loss of excitation that motor causes because local temperature rise is too high, burn-down of electric motor, strengthen the operational reliability of motor.
Effect and the function of this magneto cooling system are as follows:
(1) the stator core external refrigeration water by this magneto-wind cover, the axial wind of motor internal rotor core hole, radial ducts, air gap forms the motor cooling path.Under the effect of fan or blower fan, rotor tilt hole and baffler, permanent magnet sheath, permanent magnet and the rotor of permanent magnet motor stator iron core, stator winding (containing winding overhang) and rotor are cooled off.Greatly increase the motor heat load-bearing capacity, dwindle motor volume, realize the high power density design of magneto.
(2) this magneto cooling system makes stator, rotor temperature rise even, stator winding and end thereof there is certain cooling effect, can effectively eliminate because of the electrical fault of generating heat or the too high problem of local temperature causes, the magnet loss phenomenon of effectively avoiding permanent magnet of permanent magnet motor to produce because local temperature is too high, the operational reliability of enhancing motor.
Description of drawings
Fig. 1 is structure cutaway view of the present utility model;
Fig. 2 is the left cutaway view of Fig. 1.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and embodiment.
Such as Fig. 1, shown in 2, high power density permanent magnet motor cooling system of the present utility model comprises water-wind cover, stator 1, rotor 2, fan 5 etc.
Water-wind is placed on permanent magnet motor stator 1 outside, and wherein, water jacket 3 is connected with permanent magnet motor stator 1 close contact unshakable in one's determination, and wind cover 4 places water jacket 3 outsides, and with magneto internal cooling wind path UNICOM, form the circulating cooling wind path; Magneto internal cooling wind path is made of axial wind hole 6, the radial ducts 7 offered on cooling fan 5 or blower fan and the permanent magnet machine rotor 2, and water-wind cover internal liquid is opposite with the gas flow in the circulating cooling wind path.
Add brace rod in the water jacket 3 to form axial " S " type runner or directly to process spiral flow channel, wind cover 4 shares one deck inwalls with water jacket 3, adds brace rod in the wind cover 4 with the formation air channel.For increasing wind cover film-cooled heat, in the air channel of wind cover 4, install the radiating fin parallel with wind cover brace rod additional, the height of radiating fin can be lower than brace rod, also can be at brace rod and bottom surface, air channel processing radiating groove.For increasing the water jacket film-cooled heat, in the water channel of water jacket, also can process radiating groove.The quantity of air channel, water channel, fin and radiating groove and area are all determined by electric motor temperature field and fluid field computation.Install and maintenance for convenient, the wind cover can be carried out integrated design with water jacket, integral installation is outside at magneto.
Permanent magnet machine rotor 2 adopts segmentation structure, each intersegmental formation air channel, and this structure can be cut down the magneto loss by a relatively large margin.In addition, in the rotor core of each segmentation, processing axioversion wind hole during the rotor High Rotation Speed, under centrifugal action, can form blast, and auxiliary blower or blower fan cool off magneto.Magneto is the surface-mount type structure, be added with the non-magnet material piece between each magnetic pole, there is alloy sleeve magnetic pole and non-magnet material piece outside, if motor speed is lower, can cancel alloy sleeve uses other modes instead permanent magnet and non-magnet material is fixed, satisfy under structural strength and the electromagnetic performance requirement rotor core and a small amount of ventilating opening of the middle processing of the non-magnet material piece between permanent magnet in the permanent magnet bottom.The quantity of ventilation hole and size are determined by electric motor temperature field and fluid field computation.
When motor moves, fan or blower fan running, with the acting in conjunction of rotor axial inclination ventilation hole, form blast, the motion of motor internal cooling-air, cooling-air passes through air gap, rotor core inclination ventilation hole, the rotor radial air channel, non-magnet material piece ventilation hole between permanent magnet bottom rotor core ventilation hole and permanent magnet forms the rotor cooling air duct.The hot-air that produces after air flows out through stator winding end, under the drainage of baffler, by the inlet air passage, enters the wind cover in the stator water jacket outside, forms the complete cooling air duct of motor with the cooling air duct in the stator outside.Be connected with cooling liquid in the water jacket, for strengthening cooling effect, the flow direction of cooling liquid is opposite with the flow direction of cooling-air, on the one hand in order to direct cooling stator core, on the other hand in order to hot-air in the cooling air channel.Hot-air by air-out passage, flows into motor internal again after cooling, motor is cooled off.
Claims (5)
1. high power density permanent magnet motor cooling system, formed by water-wind cover and motor internal cooling air duct, it is characterized in that: described water-wind is placed on the permanent magnet motor stator outside, wherein, water jacket is connected with permanent magnet motor stator close contact unshakable in one's determination, wind is placed on the water jacket outside, and with magneto internal cooling wind path UNICOM, form the circulating cooling wind path; Magneto internal cooling wind path is made of axial wind hole, the radial ducts offered on cooling fan or blower fan and the permanent magnet machine rotor, and water-wind cover internal liquid is opposite with the gas flow in the circulating cooling wind path.
2. high power density permanent magnet motor cooling system according to claim 1, it is characterized in that: the axial wind hole of offering on the described permanent magnet machine rotor is angling hole, when motor rotates, under the effect of centrifugal force, angling hole produces blast, uniting with fan or blower fan provides blast, is used for satisfying motor cooling air quantity needs.
3. high power density permanent magnet motor cooling system according to claim 1 is characterized in that: described wind cover and the ventilation notch place of magneto internal cooling wind path UNICOM arrange the baffler of guiding refrigerating gas cooling motor winding overhang.
4. high power density permanent magnet motor cooling system according to claim 1, it is characterized in that: described permanent magnet machine rotor is segmentation structure, each intersegmental formation air channel is used for cutting down the magneto loss, strengthens cooling effect.
5. high power density permanent magnet motor cooling system according to claim 1 is characterized in that: add brace rod in the described water jacket to form axially " S " type runner or spiral flow channel; Install the radiating fin parallel with wind cover brace rod in the air channel of described wind cover additional, the height of radiating fin is lower than brace rod or at wind cover brace rod and bottom surface, air channel radiating groove is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220568576 CN202872571U (en) | 2012-11-01 | 2012-11-01 | Cooling system for high power density permanent magnetic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220568576 CN202872571U (en) | 2012-11-01 | 2012-11-01 | Cooling system for high power density permanent magnetic motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202872571U true CN202872571U (en) | 2013-04-10 |
Family
ID=48039258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220568576 Expired - Lifetime CN202872571U (en) | 2012-11-01 | 2012-11-01 | Cooling system for high power density permanent magnetic motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202872571U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102891565A (en) * | 2012-11-01 | 2013-01-23 | 中国船舶重工集团公司第七0四研究所 | High-power density permanent magnet motor cooling system |
| CN103986251A (en) * | 2014-06-04 | 2014-08-13 | 江苏利得尔电机有限公司 | High-power density motor with water cooling structure |
| CN107040091A (en) * | 2017-05-11 | 2017-08-11 | 常州大学 | A kind of large-size machine cooling system |
| CN108233610A (en) * | 2018-02-13 | 2018-06-29 | 安徽明腾永磁机电设备有限公司 | Vertical direct-drive permanent-magnet synchronous motor |
| CN108711965A (en) * | 2018-08-28 | 2018-10-26 | 中车株洲电机有限公司 | A kind of magneto |
| CN109728668A (en) * | 2018-12-19 | 2019-05-07 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | A kind of ventilation cooling structure of rotor |
| CN111711325A (en) * | 2020-06-28 | 2020-09-25 | 哈动国家水力发电设备工程技术研究中心有限公司 | Tidal current energy permanent magnet generator with tooth top temperature measurement structure |
| US11837943B2 (en) | 2019-12-20 | 2023-12-05 | Volvo Car Corporation | Rotor air cooling system |
-
2012
- 2012-11-01 CN CN 201220568576 patent/CN202872571U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102891565A (en) * | 2012-11-01 | 2013-01-23 | 中国船舶重工集团公司第七0四研究所 | High-power density permanent magnet motor cooling system |
| CN103986251A (en) * | 2014-06-04 | 2014-08-13 | 江苏利得尔电机有限公司 | High-power density motor with water cooling structure |
| CN107040091A (en) * | 2017-05-11 | 2017-08-11 | 常州大学 | A kind of large-size machine cooling system |
| CN108233610A (en) * | 2018-02-13 | 2018-06-29 | 安徽明腾永磁机电设备有限公司 | Vertical direct-drive permanent-magnet synchronous motor |
| CN108711965A (en) * | 2018-08-28 | 2018-10-26 | 中车株洲电机有限公司 | A kind of magneto |
| CN109728668A (en) * | 2018-12-19 | 2019-05-07 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | A kind of ventilation cooling structure of rotor |
| US11837943B2 (en) | 2019-12-20 | 2023-12-05 | Volvo Car Corporation | Rotor air cooling system |
| CN111711325A (en) * | 2020-06-28 | 2020-09-25 | 哈动国家水力发电设备工程技术研究中心有限公司 | Tidal current energy permanent magnet generator with tooth top temperature measurement structure |
| CN111711325B (en) * | 2020-06-28 | 2023-04-25 | 哈动国家水力发电设备工程技术研究中心有限公司 | Tidal current energy permanent magnet generator with tooth top temperature measuring structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202872571U (en) | Cooling system for high power density permanent magnetic motor | |
| CN103746485B (en) | A kind of cooling structure of permagnetic synchronous motor | |
| CN100547881C (en) | A kind of motor stator water-cooling method and device | |
| CN109256902B (en) | Stator and rotor integrated circulating cooling high-speed permanent magnet motor and cooling method thereof | |
| CN107147260A (en) | A kind of axial permanent magnetic auxiliary radial direction magnetic resistance high-speed electric expreess locomotive with combination cooling structure | |
| CN203691125U (en) | Permanent magnetic motor and water pump using permanent magnetic motor | |
| CN103441612A (en) | Magnetic suspension permanent-magnet synchronous high-power high-speed draught fan | |
| CN110460198A (en) | High-speed permanent magnet motor | |
| CN102891565A (en) | High-power density permanent magnet motor cooling system | |
| CN202183689U (en) | Internal wind path structure for 2-pole motor | |
| CN109450151A (en) | The permanent-magnet servo motor of built-in heat dissipation wind channel | |
| CN208539671U (en) | A kind of self-cooling motor rotor | |
| US20090180902A1 (en) | Fan | |
| CN207559750U (en) | A kind of high-speed permanent magnet motor direct connection centrifugal blower heat sink | |
| CN116505678B (en) | Motor, propulsion system and aircraft | |
| CN113036968A (en) | Rotor internal oil circuit cooling structure | |
| CN203482014U (en) | Magnetic suspension permanent-magnet synchronous high-power high-speed draught fan | |
| CN202048052U (en) | Servo motor structure for hydraulic system device | |
| CN208489764U (en) | A kind of cooling structure of high-speed permanent magnetic generator | |
| CN209217888U (en) | Permanent-magnet servo motor radiator structure | |
| CN217469647U (en) | Motor cooling device with air path and water path alternately cooled | |
| CN104868656A (en) | Permanent-magnet motor | |
| CN207426827U (en) | Heat dissipation pipe's high overload high performance permanent magnetic synchronous motor is set in a kind of stator slot | |
| CN109038949A (en) | A kind of rotor cooling structure suitable for totally-enclosed interior permanent magnet machines | |
| CN206712589U (en) | A kind of air-cooled rotor motor of high efficiency and heat radiation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151117 Address after: 200031 Xuhui District, Hengshan Road, No. 10, Patentee after: SHANGHAI CSIC SHIP PROPULSION EQUIPMENT Co.,Ltd. Address before: 200031 Xuhui District, Hengshan Road, No. 10, Patentee before: NO.704 RESEARCH INSTITUTE OF CHINA SHIPBUILDING INDUSTRY Corp. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130410 |