CN202749928U - 一种转子轴内设置内冷却装置的电动机 - Google Patents

一种转子轴内设置内冷却装置的电动机 Download PDF

Info

Publication number
CN202749928U
CN202749928U CN 201220258029 CN201220258029U CN202749928U CN 202749928 U CN202749928 U CN 202749928U CN 201220258029 CN201220258029 CN 201220258029 CN 201220258029 U CN201220258029 U CN 201220258029U CN 202749928 U CN202749928 U CN 202749928U
Authority
CN
China
Prior art keywords
motor
rotor shaft
armature spindle
cooling device
inner 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.)
Expired - Fee Related
Application number
CN 201220258029
Other languages
English (en)
Inventor
郑亚华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN 201220258029 priority Critical patent/CN202749928U/zh
Application granted granted Critical
Publication of CN202749928U publication Critical patent/CN202749928U/zh
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Motor Or Generator Cooling System (AREA)

Abstract

一种转子轴内设置内冷却装置的电动机,它是在综合“涡电流”、“漏磁通”和“趋肤效应”等技术基础上,通过在转子轴轴内设置流通管道以及自扇叶片的内冷却技术,提高了电动机的冷却和效率。

Description

一种转子轴内设置内冷却装置的电动机
技术领域
本实用新型涉及一种转子轴内设置内冷却装置的电动机,通过在转子轴轴内设置流通管道以及自扇叶片解决电动机的内冷却方式。 
背景技术
公知,自从1820年,奥斯特发明了,随后安培总结了电流在磁场中的机械力之后,电动机的雏形就出现在实验室里。同样,自1831年法拉第提出了电磁感应定律后,各种各样的发电机雏形也先后出现。真到1885年,费拉里斯提出了二相交流异步机的模型,在以后的年代中得到了一定的应用。到1888年,多利沃-多勃罗沃尔斯基提出了三相制和三相异步机,这才奠定了交流电动机在工业上应用的基础。自1891年三相制开始使用起,工业上的动力很快地为电动机所代替。 
其中,电动机由于内部产生了损耗,引起了内部发热,影响了绝缘的寿命和耐电的性能,必须加以冷却。电动机愈大,其冷却的困难亦愈大。为了减少材料和体积,减轻电动机的重量和成本,冷却的困难也随之增加。 
目前,电动机的冷却方式,主要是自然冷却式、自扇冷却式和管道通风式,主要是从电动机外侧上解决其发热和温升。 
综上,电动机技术中,一圈圈绕圆柱体轴线流动的涡流,涡流(涡电流)也称为“傅科电流”能使导体发热,涡流的热效应对电动机的运行极为不利。首先,它会导致铁心释放大量的焦耳热使温度升高,从而危及线圈绝缘材料的寿命,严重时可使绝缘材料当即烧毁。其次,涡流发热要损耗额外的能量(叫做“涡流损耗”),使电动机的效率降低。 
另外,电动机的磁场是使电动机能感生电势和产生电磁力矩所不可缺少的因素,磁力线在空气中的分布,一大部分经过气隙进入电枢,有一小部分不经过电枢,而直接通到相邻的磁极或磁轭里,形成闭合廻路。进入电枢中的那部分磁通称为“主磁通”,它能够在旋转的电枢绕组中感应出电势,并和绕组电流相互作用产生力矩,因此是主要的部分。不进入电枢的那部分磁通称为“漏磁通”,它不在电枢中感生电势也不产生力矩,但它也是存在的,它的作用是增加了磁极和磁轭中的饱和程度,由于主磁通廻路的气隙较小,磁导较大,在数量上主磁通比漏磁通大得多,一般漏磁通的大小约为主磁通的20%左右,总之,漏磁通没有用而又是不可避免的。 
还有,趋肤效应亦称为“集肤效应”,交变电流通过导体时,由于感应作用引起导体截面上电流分布不均匀,愈近导体表面电流密度越大。这种现象称“趋肤效应”。趋肤效应使导体的有效电阻增加。频率越高,趋肤效应也越显著。当频率很高的电流通过导线时,可以认为电流只在导线表现上很薄的一层中流过,这等效于导线的截面减小,电阻增大。既然导线的中心部分几乎没有电流通过,就可以把这中心部分除去以节约材料。因此,在高频电路中可以采用空心导线代替实心导线。 
发明内容
为了克服现行电动机的外侧冷却技术之不足,本实用新型在综合“涡电流”、“漏磁通”和“趋肤效应”等技术的基础上,提出一种在电动机转子轴轴内设置流动管道以及自扇叶片的内冷却技术,提高了电动机的冷却和效率。 
本实用新型解决其技术问题所采用的技术方案如下: 
在电动机中的转子和转子配套连接的转子轴上,对与连接相关的转子内径和转子轴外径,设置同步适当倍数的扩大。通过“空心导线”模式设置转子轴轴内含有气、液体流体流动的流通管道,含流通管道的转子轴可以避免了部分导致释放大量焦耳热的铁心和漏磁通,含流通管道转子轴的一端连接配置的自扇叶片:该自扇叶片,经过对气、液体流体的动力作用,将转子和转子轴传递到流通管道内所产生的热流体从流通管道中排出。鉴上,本实用新型技术方案归纳为,它包含转子、转子轴,转子配套连接在转子轴上,其中转子轴内设置流通管道,以及流通管道的一端连接配置的自扇叶片。 
本发明的有益效果是,在电动机转子轴轴内设置流通管道以及自扇叶片的内冷却技术,提高了电动机的冷却和效率。
附图说明
下面结合附图和实例对本实用新型进一步说明。 
图1是本实用新型示范的剖视图。 
图中,1、转子,2、转子轴,3、自扇叶片,4、流通管道。 
具体实施方式
图1中,转子(1)、转子轴(2)相连,自扇叶片(3)和流通管道(4)一端端顶相连。 

Claims (1)

1.一种转子轴内设置内冷却装置的电动机,它包含有转子、转子轴,转子配套连接在转子轴上,其特征在于转子轴内设置流通管道,以及流通管道的一端连接配置的自扇叶片。 
CN 201220258029 2012-06-04 2012-06-04 一种转子轴内设置内冷却装置的电动机 Expired - Fee Related CN202749928U (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220258029 CN202749928U (zh) 2012-06-04 2012-06-04 一种转子轴内设置内冷却装置的电动机

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220258029 CN202749928U (zh) 2012-06-04 2012-06-04 一种转子轴内设置内冷却装置的电动机

Publications (1)

Publication Number Publication Date
CN202749928U true CN202749928U (zh) 2013-02-20

Family

ID=47709280

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220258029 Expired - Fee Related CN202749928U (zh) 2012-06-04 2012-06-04 一种转子轴内设置内冷却装置的电动机

Country Status (1)

Country Link
CN (1) CN202749928U (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102694432A (zh) * 2012-06-04 2012-09-26 郑亚华 一种转子轴内设置内冷却装置的电动机

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102694432A (zh) * 2012-06-04 2012-09-26 郑亚华 一种转子轴内设置内冷却装置的电动机

Similar Documents

Publication Publication Date Title
Du et al. Power loss and thermal analysis for high-power high-speed permanent magnet machines
Huang et al. Loss calculation and thermal analysis of rotors supported by active magnetic bearings for high-speed permanent-magnet electrical machines
Zhang et al. Electrothermal combined optimization on notch in air-cooled high-speed permanent-magnet generator
Li et al. Thermal optimization for a HSPMG used for distributed generation systems
Du et al. Effects of design parameters on the multiphysics performance of high-speed permanent magnet machines
CN105827027B (zh) 轴向气隙开关磁阻电机及其制备方法
Chen et al. Calculation analysis of thermal loss and temperature field of in-wheel motor in micro-electric vehicle
Huang et al. Design and analysis of a high-speed claw pole motor with soft magnetic composite core
Kim et al. Design and analysis of cooling structure on advanced air-core stator for megawatt-class HTS synchronous motor
Bobba et al. Multi-physics based analysis and design of stator coil in high power density PMSM for aircraft propulsion applications
CN101626185A (zh) 一种永磁同步电动机
Liang et al. Optimal design and multifield coupling analysis of propelling motor used in a novel integrated motor propeller
CN202749928U (zh) 一种转子轴内设置内冷却装置的电动机
Duan et al. Design and analysis of a 120kW high-speed permanent magnet motor with a novel evaporative cooling configuration for centrifugal compressor
Zhang et al. Investigation of ferrofluid cooling for high power density permanent magnet machines
Chen et al. Multi-field coupling finite-element analysis of the temperature rise in permanent magnet synchronous motor applied for high speed train
CN201499071U (zh) 一种永磁同步电动机
CN102694432A (zh) 一种转子轴内设置内冷却装置的电动机
CA2516737A1 (en) Continuous extrusion apparatus
CN112886774A (zh) 一种辅助机壳式外转子永磁同步电机冷却装置
Li et al. Thermal analysis of high speed permanent magnetic generator
Chen et al. Comparison between thermal-circuit model and finite element model for dry-type transformer
Zhang et al. Topology investigation on high speed PM generator with back wound windings
Lindner et al. Alternative ways of cooling an e-core flux-switching permanent magnet machine with large air-gap
Tong et al. Analysis and experimental verification of segmented rotor structure on rotor eddy current loss of high-speed surface-mounted permanent magnet machine

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130220

Termination date: 20180604