CN106555819A - 一种直流无刷电机润滑油内循环装置 - Google Patents
一种直流无刷电机润滑油内循环装置 Download PDFInfo
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- bearing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
- F16C33/128—Porous bearings, e.g. bushes of sintered alloy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
- F16C33/103—Construction relative to lubrication with liquid, e.g. oil, as lubricant retained in or near the bearing
- F16C33/104—Construction relative to lubrication with liquid, e.g. oil, as lubricant retained in or near the bearing in a porous body, e.g. oil impregnated sintered sleeve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
- F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
- F16C33/1065—Grooves on a bearing surface for distributing or collecting the liquid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/02—Rigid support of bearing units; Housings, e.g. caps, covers in the case of sliding-contact bearings
-
- 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
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/167—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2380/00—Electrical apparatus
- F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Power Engineering (AREA)
- Metallurgy (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
本发明提供一种无刷直流电机润滑油内循环装置,包括含油轴承和限位套,其特征在于:所述含油轴承和限位套均为粉末烧结多孔材质;所述含油轴承与限位套依次固定在电机轴上;所述含油轴承包括上轴承圈,下轴承圈和轴孔;所述限位套为T型结构,所述限位套上端与含油轴承上轴承圈相对;所述限位套上表面上设有若干来复线凸条,所述来复线凸条自限位套表面边缘向中心聚拢。本发明具有不仅扩大了润滑油的存储空间,还能实现润滑油的循环,能够提高电机的使用寿命。
Description
技术领域
本发明属于润滑油内循环领域,尤其涉及一种直流无刷电机润滑油内循环装置。
背景技术
无刷直流电机的使用寿命很大程度上由润滑油的损耗决定的。无刷直流电机风扇广泛应用在如笔记本电脑,冰箱等机器的散热中。除了必须具备良好的低噪声的特性,还需要能够长时间稳定工作。专利号:200710077333.4公开了一种风扇,其中公开了包含一种润滑油内循环的风扇,主要改进在于在含油轴承上方添加挡油环,进而实现润滑油的自循环。但也存在些许问题,如:挡油环为粉末烧结环,只能吸收含油轴承顶端的润滑油,不能对边缘甩出的润滑油进行回收。
发明内容
为解决上述难题,本发明的目的在于提出一种润滑油内循环装置,延长直流电机的使用寿命。具体实施方案如下:
一种无刷直流电机润滑油内循环装置,包括含油轴承和限位套,其特征在于:所述含油轴承和限位套均为粉末烧结多孔材质;所述含油轴承与限位套依次固定在电机轴上;所述含油轴承包括上轴承圈,下轴承圈和轴孔;所述限位套为T型结构,所述限位套上端与含油轴承的上轴承圈相对;所述限位套上表面上设有若干来复线凸条,所述来复线凸条的高度不超过整个限位套高度的1/25,所述来复线凸条自限位套表面边缘向轴中心聚拢。
优选地,所述含油轴承的上轴承圈下端设有凹型中空区域,所述下轴承圈上端为凸型实体,所述凹型中空区域的直径小于凸型实体的直径,所述凹型中空区域的深度小于凸型实体的高度,用于下轴承圈与上轴承圈的过盈连接;所述下轴承圈上部凸型实体设有中空区域,所述中空区域的直径大于轴孔的直径。
优选地,所述上轴承圈与下轴承圈之间设有安装间隙;所述上轴承圈外侧曲面表面设有若干线型储油槽,用于增加润滑油接触面积,储存更多的润滑油;所述下轴承圈的凸型实体上端设有安装倒角,当通过过盈方式连接到上轴承圈的凹型中空区时,倒角与凹型中空区形成真空区,用于增加润滑油储存空间;所述上轴承圈材料为紫铜基;所述下轴承圈材料为黄铜基。
电机轴转动时,电机轴与含油轴承之间形成油膜,在离心力作用下沿着电机轴向上运动。限位套的设置一方面限制了润滑油的运动,另一方面由于来复线凸条的存在,使得润滑油能够在来复线的引导作用下聚集到轴心处。由于含油轴承在转动过程中近似为处于真空的,随着润滑油的缺少,压强会降低,此时限位套处汇聚的润滑油能够在压强的作用下,通过含油轴承表面的线型储油槽104,流入含油轴承1内部,形成润滑油的自循环,进而延长含油轴承的使用寿命。
附图说明
图1为本发明提出的一种直流无刷电机润滑油内循环装置安装剖面图。
图2为本发明提供的一种直流无刷电机润滑油内循环装置的含油轴承结构图。
图3为本发明提供的一种直流无刷电机润滑油内循环装置的限位套结构图。
图4为本发明的优选实施例。
附图标记说明:1‐含油轴承,2‐限位套,3‐电机轴,4‐来复线凸条,101‐上轴承圈,102‐下轴承圈,103‐中空区域,104‐线型储油槽,105‐倒角,5‐铁芯定子,6‐收容孔。
具体实施方式
如图1,一种无刷直流电机润滑油内循环装置,包括含油轴承1和限位套2,其特征在于:所述含油轴承1和限位套2均为粉末烧结多孔材质;所述含油轴承1与限位套2依次固定在电机轴3上;所述含油轴承包括上轴承圈101,下轴承圈102和轴孔;所述限位套2为T型结构,所述限位套2上端与含油轴承的上轴承圈101相对;所述限位套上表面上设有若干来复线凸条4,所述来复线凸条4的高度不超过整个限位套2高度的1/25,所述来复线凸条2自限位套5表面边缘向电机3轴中心聚拢。
优选地,所述含油轴承1的上轴承圈101下端设有凹型中空区域,所述下轴承圈102上端为凸型实体,所述凹型中空区域的直径小于凸型实体的直径,所述凹型中空区域的深度小于凸型实体的高度,用于下轴承圈102与上轴承圈101的过盈连接;所述下轴承圈102上部凸型实体设有中空区域,所述中空区域103的直径大于轴孔的直径。
优选地,所述上轴承圈101与下轴承圈102之间设有安装间隙;所述上轴承圈101外侧曲面表面设有若干线型储油槽104,用于增加润滑油接触面积,储存更多的润滑油;所述下轴承圈102的凸型实体上端设有安装倒角105,当通过过盈方式连接到上轴承圈的凹型中空区时,倒角105与凹型中空区形成真空区,用于增加润滑油储存空间;所述上轴承圈101材料为紫铜基;所述下轴承圈102材料为黄铜基。
如图4所示,为本发明的一个优选实施例。一种直流无刷电机润滑油内循环装置,运用在风扇中。所述装置安装在风扇安装座的收容孔6中,收容孔6底部为密封结构,不存在漏油的情况。收容孔6***设有定子铁芯5,定子铁芯5上部设有开口,截面为梯形,用于固定限位套2,且能控制润滑油的量。电机轴3转动时,电机轴3与含油轴承1之间形成油膜,形成密封中空,在离心力作用下沿着电机轴3向上运动。限位套2的设置一方面限制了润滑油的运动,另一方面由于来复线凸条4的存在,使得润滑油能够在来复线的引导作用下聚集到电机轴3中心处。由于含油轴承1在转动过程中近似为处于真空的,随着润滑油的缺少,压强会降低,此时限位套2处汇聚的润滑油能够在压强的作用下,通过含油轴承1表面的线型储油槽,流入含油轴承1内部,形成润滑油的自循环,进而延长电机的使用寿命。
上面结合附图对本发明优选实施方式作了详细说明,但是本发明不限于上述实施方式,在本领域普通技术人员所具备的知识范围内,还可以在不脱离本发明宗旨的前提下做出各种变化。
不脱离本发明的构思和范围可以做出许多其他改变和改型。应当理解,本发明不限于特定的实施方式,本发明的范围由所附权利要求限定。
Claims (3)
1.一种无刷直流电机润滑油内循环装置,包括含油轴承和限位套,其特征在于:所述含油轴承和限位套均为粉末烧结多孔材质;所述含油轴承与限位套依次固定在电机轴上;所述含油轴承包括上轴承圈,下轴承圈和轴孔;所述限位套为T型结构,所述限位套上端与含油轴承的上轴承圈相对;所述限位套上表面上设有若干来复线凸条,所述来复线凸条的高度不超过整个限位套高度的1/25,所述来复线凸条自限位套表面边缘向轴中心聚拢。
2.根据权利要求1所述的一种无刷直流电机润滑油内循环装置,其特征在于:所述含油轴承的上轴承圈下端设有凹型中空区域,所述下轴承圈上端为凸型实体,所述凹型中空区域的直径小于凸型实体的直径,所述凹型中空区域的深度小于凸型实体的高度;所述下轴承圈上部凸型实体设有中空区域,所述中空区域的直径大于轴孔的直径。
3.根据权利要求1所述的一种无刷直流电机润滑油内循环装置,其特征在于:所述上轴承圈与下轴承圈之间设有安装间隙;所述上轴承圈外侧曲面表面设有若干线型储油槽;所述下轴承圈的凸型实体上端设有安装倒角。
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