CN208623466U - 电机 - Google Patents

电机 Download PDF

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CN208623466U
CN208623466U CN201820859466.0U CN201820859466U CN208623466U CN 208623466 U CN208623466 U CN 208623466U CN 201820859466 U CN201820859466 U CN 201820859466U CN 208623466 U CN208623466 U CN 208623466U
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bearing
motor
axis
rotor assembly
supporter portion
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C.K.沙利文
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Dyson Technology Ltd
Dyson Ltd
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Classifications

    • 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
    • H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/026—Units comprising pumps and their driving means with a magnetic coupling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/043—Shafts
    • F04D29/044—Arrangements for joining or assembling shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/056—Bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/12—Shaft sealings using sealing-rings
    • F04D29/122—Shaft sealings using sealing-rings especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/266—Rotors specially for elastic fluids mounting compressor rotors on shafts
    • 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
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • 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
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • 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
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/003—Couplings; Details of shafts
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08—Structural association with bearings
    • H02K7/083—Structural association with bearings radially supporting the rotary shaft at both ends of the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/284—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for compressors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00—Components
    • F05D2240/50—Bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00—Components
    • F05D2240/60—Shafts
    • 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
    • F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/06—Elastic or yielding bearings or bearing supports, for exclusively rotary movement by means of parts of rubber or like materials
    • F16C27/066—Ball or roller bearings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/04—Balancing means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • H02K7/16—Structural association with mechanical loads, e.g. with hand-held machine tools or fans for operation above the critical speed of vibration of the rotating parts

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Motor Or Generator Frames (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

一种电机，包括:定子组件，转子组件和支撑体部。转子组件包括轴，第一轴承和第二轴承被安装在轴上、永磁体的两侧，支撑体部包括第一和第二轴承座，转子组件的轴承被安装到第一和第二轴承座，其中第一轴承通过粘合剂安装到第一轴承座，第二轴承通过O形环软安装到第二轴承座。

Description

电机
技术领域
本实用新型涉及一种电机。
背景技术
大体期望以数种方式改进电机，比如无刷电机。特别地，改进可在尺寸重量，制造成本，效率，可靠性和噪音等方面被期望。
电机(比如无刷电机)被使用为较高速度，例如以100krpm或更高的情形变得越来越普遍。当以这样的高速操作时，电机的部件遭受非常大的力。为了电机在电机的寿命期间保持性能和可靠性，它必须能够承受这些较大力。因此，需要发现改进，其允许电机可承受在高操作速度处的较大力。
实用新型内容
本实用新型提供了一种电机，包括:定子组件，转子组件和支撑体部.该转子组件包括轴，第一轴承和第二轴承被安装在轴上、永磁体的两侧，支撑体部包括第一和第二轴承座，转子组件的轴承被安装到第一和第二轴承座，其中第一轴承通过粘合剂安装到第一轴承座，第二轴承通过O形环软安装到第二轴承座。
结果，转子组件，以及转子组件和支撑体部之间的连接点可更有效地承受和吸收当电机在使用中时它们遭受的轴向力和径向力两者。软安装的轴承对于吸收径向力是有效的，且通过粘合剂固定的轴承对于承受任何轴向力是有效的。同样地，有利的协作作用从使用两种不同安装方法用于两个轴承而得到。
轴可驱动被安装到轴的一端的负载，且第二轴承可比第一轴承更接近负载。结果，最接近负载的轴承被软安装到支撑体部。径向力最可能由附接到轴的负载产生，且由此有利的是最接近于负载的轴承能够吸收在使用期间由负载旋转引起的任何径向力，以便它不具有对在其他轴承处的粘合剂粘合的强度的负面影响。任何轴向力沿转子组件传递，且由轴承(其从负载进一步地远离间隔开)承受。
电机可为压缩机，负载可为叶轮。叶轮可为混流叶轮。
环形槽可被提供在第二轴承和轴承座的外表面的至少一个中，且o形环被定位在所述环形槽中。结果，o形环将保持在期望的位置中且将不移动位置(其否则将降低由o形环提供的软安装的效果)。
环形槽可被提供在第二轴承和轴承座的外表面的至少一个中，该环形槽提供通道，粘合剂位于该通道内。这个通道允许清洁的粘合剂粘合，且降低粘合剂在装配期间从轴承和轴承座之间流出的可能性，其否则将降低粘合剂粘合的效果。如果粘合剂能够流出，还存在它可进入轴承自身的可能性，其将非常不利于轴承且将阻碍它完全地发挥作用。
支撑体部可包括细长的中心部分，且第一和第二轴承可轴向地定位在细长的中心部分处的相对端部处，以使永磁体被定位在支撑体部的细长的中心部分内。细长的中心部分可支撑定子组件。结果，磁体和定子组件的相对位置的非常严格的控制可被实现，其可导致更有效率的电机。
附图说明
为了使得本实用新型可被更容易地理解，本实用新型的实施例现在将要参考下面的附图通过实例而被描述，其中：
图1示出了压缩机的分解透视图；
图2示出了转子组件的分解透视图；
图3示出了装配的转子组件，以及
图4示出了压缩机的横截面视图。
具体实施方式
图1示出了压缩机形式的电机10的分解透视图。为了清晰起见，某些部件(比如控制电子器件和外部壳体)没有被示出。电机10包括转子组件12，支撑体部14和定子组件，该定子组件包括四个定子元件16，18，20和22。当电机10被装配时，转子组件12定位在支撑体部14内且被安装到支撑体部14，且定子元件位于支撑体部14内的相应槽内。例如，定子元件20位于支撑体部内的槽24内。支撑体部14可为一件式结构，例如被铸造为单个物体，且包括叶轮罩26，其覆盖叶轮，如图4中所示。电机10还包括扩散器28。
图2示出了转子组件12的分解透视图。转子组件12包括轴30，转子芯部永磁体32，第一平衡环34和第二平衡环36被安装到轴30上。当转子组件12被装配时，一对轴承38，40被安装在轴30上，芯部32和平衡环34，36的两侧上。叶轮42被安装在轴30的一端处，传感器磁体44被安装在另一端处。
图3示出了装配的转子组件12。相似于图2，转子组件12包括轴30，转子芯部永磁体32被安装到轴30上，定位在磁体32两侧的平衡环34，36。在磁体32的一端处，被固定到轴30的是第一轴承40，其在它的外周表面上被提供有环形槽或通道41。槽41提供了通道，粘合剂可位于该通道内。当转子组件12被装配入支撑体部14内的位置时，第一轴承40位于支撑体部中的轴承座内，且使用粘合剂固定在其中。通道41允许较强的结合被实现在第一轴承41和轴承座之间，且降低粘合剂在装配期间从轴承和轴承座之间流出的可能性，其否则将降低粘合剂粘合的效果。而且，如果粘合剂能够流出，将有粘合剂污染轴承自身的可能性，其将非常不利于轴承且将阻碍它完全地发挥作用。
在磁体32的相对端部处固定到轴30的是第二轴承38。O形环39被安置为围绕第二轴承38。尽管不能在图3中看见，第二轴承也被提供有环形槽或通道(未示出)在它的外周表面上。O形环39位于该通道内以便O形环保持在轴承38上的期望位置中且不会到处移动。当转子组件12被装配入支撑体部14内的位置时，第二轴承38位于支撑体部中的第二轴承座内，且通过O形环39的方式软安装到那。
图4示出了装配的电机10穿过包括转子组件12的旋转轴线的平面的横截面视图。定子元件16，20被示出为插入支撑体部14内的它们相应的槽内，例如定子元件20被插入槽24。还可看到转子组件12的轴承38，40被定位在支撑体部14内且分别被安装到轴承座50和52。尽管没有示出在图4中，轴承38通过o形环软安装在轴承座50内，且轴承40通过粘合剂硬安装到轴承座52。
第一轴承40被定位为相比于第二轴承38进一步远离叶轮42。第一轴承40通过粘合剂固定到轴承座52，且能够承受沿转子的轴向力(其在使用期间通过叶轮42产生)。第二轴承38被定位在轴承座50内最接近于叶轮42。由于第二轴承38通过o形环的方式仅软安装在轴承座50内，它能够吸收当叶轮在使用期间旋转时由叶轮42产生的任何径向力。如果粘合剂结合被用于固定轴承38到轴承座50，那么径向力可能能够随着时间过去削弱粘合剂结合，减少电机的寿命，且可能导致电机10的毁灭性故障。然而，软安装不能承受在使用期间由叶轮沿转子组件产生的任何轴向力，这就是为什么粘合剂粘合被用于固定另一个轴承40到轴承座52，且对于两个轴承的每个使用不同安装方法由此是有利的。
尽管特殊实施例已被描述，应理解各种修改可在不脱离由权利要求限定的本实用新型的范围的情况下被做出。例如，被设置在每个轴承的外表面中的环形通道可替代地被设置在支撑体部的轴承座的内表面上。此外，本文中所示和描述的实施例涉及具有叶轮的压缩机。然而，本实用新型将有利于被用于驱动不同于叶轮的负载的其他类型的电机，比如无刷电动机。

Claims (8)

1.一种电机，其特征在于，所述电机包括：
定子组件；
转子组件；以及
支撑体部；
转子组件包括轴，第一轴承和第二轴承在永磁体的两侧被安装到轴，且支撑体部包括第一和第二轴承座，转子组件的轴承被安装到所述第一和第二轴承座，
其中第一轴承通过粘合剂安装到第一轴承座，且第二轴承通过O形环软安装到第二轴承座。
2.根据权利要求1所述的电机，其特征在于，所述轴驱动被安装到轴的一端的负载，且第二轴承比第一轴承更接近所述负载。
3.根据权利要求2所述的电机，其特征在于，所述电机是压缩机且所述负载是叶轮。
4.根据权利要求3所述的电机，其特征在于，所述叶轮是混流叶轮。
5.根据权利要求1-4中任一项所述的电机，其特征在于，环形槽被设置在轴承座和第二轴承的外表面的至少一个中，且o形环被定位在所述环形槽中。
6.根据权利要求1-4中任一项所述的电机，其特征在于，环形槽被设置在轴承座和第一轴承的外表面的至少一个中，且环形槽提供通道，粘合剂可定位在该通道内。
7.根据权利要求1-4中任一项所述的电机，其特征在于，支撑体部包括细长的中心部分，且所述第一和第二轴承座被轴向定位在细长的中心部分的相对端部处，以使永磁体被定位在支撑体部的细长的中心部分内。
8.根据权利要求7所述的电机，其特征在于，所述细长的中心部分支撑定子组件。
CN201820859466.0U 2017-06-20 2018-06-04 电机 Active CN208623466U (zh)

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GB1709839.3A GB2563617B (en) 2017-06-20 2017-06-20 An electric machine
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US20180363669A1 (en) 2018-12-20
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