CN102959834B - 制冷压缩机磁性轴承 - Google Patents
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- 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
- F04D29/046—Bearings
- F04D29/048—Bearings magnetic; electromagnetic
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/0606—Canned motor pumps
- F04D13/0633—Details of the bearings
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- 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
- F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
-
- 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
- F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
- F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
- F04D25/062—Details of the bearings
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- 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
- F04D29/058—Bearings magnetic; electromagnetic
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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
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0459—Details of the magnetic circuit
- F16C32/0461—Details of the magnetic circuit of stationary parts of the magnetic circuit
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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
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0474—Active magnetic bearings for rotary movement
- F16C32/048—Active magnetic bearings for rotary movement with active support of two degrees of freedom, e.g. radial magnetic bearings
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- 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
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/124—Sealing of shafts
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- 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
- H02K7/09—Structural association with bearings with magnetic bearings
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- 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
- F04D29/046—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
- F16C2360/00—Engines or pumps
- F16C2360/44—Centrifugal pumps
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/325—Windings characterised by the shape, form or construction of the insulation for windings on salient poles, such as claw-shaped poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/52—Fastening salient pole windings or connections thereto
- H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
- H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
Abstract
磁性轴承组件,包括具有在相对侧面之间延伸的线圈孔的迭片结构。将连续整体绝缘层包覆模制到相对侧面上以及线圈孔内从而提供线圈孔衬里。绝缘层包括在所述线圈孔内的壁,所述壁邻接着线圈孔衬里并且将所述线圈孔二等分为第一开口和第二开口。线圈部分设置在所述第一开口和第二开口的每个开口中并且通过所述壁相互电绝缘。所述磁性轴承组件布置在制冷压缩机中,该制冷压缩机包括旋转地构造成通过轴旋转地驱动叶轮的电机。控制器与所述磁性轴承通信并且构造成给线圈供电并且提供旋转支撑所述轴的磁场。
Description
技术领域
本发明涉及制冷压缩机磁性轴承,并且更具体地说涉及供磁性轴承使用的绝缘装置。
背景技术
一种类型的制冷压缩机包括旋转地支撑着轴的磁性轴承。该轴支撑着由电机驱动的叶轮。磁性轴承组件支撑在压缩机外壳中。在一种类型的磁性轴承组件中,迭片结构包括线圈。安装在外壳中的环支撑着迭片结构。
这些线圈必须彼此绝缘并且与迭片结构绝缘。通常,将分立的绝缘板(例如NOMEX板)切割成所期望的形状,并且安放在迭片结构的两侧中的任一侧上。线圈穿过迭片结构中的线圈孔。还要将NOMEX绝缘板布置在线圈孔内并且布置在线圈之间,这是费时费力的。
发明内容
磁性轴承组件包括具有在相对侧面之间延伸的线圈孔的迭片结构。将连续整体的绝缘层包覆模制到相对侧面上以及线圈孔内,从而提供线圈孔衬里。绝缘层包括位于所述线圈孔内的壁,该壁邻接着线圈孔衬里并且将所述线圈孔二等分为第一开口和第二开口。线圈部分布置在所述第一开口和第二开口的每个开口中并且通过所述壁相互电绝缘。所述磁性轴承组件布置在制冷压缩机中,该制冷压缩机包括旋转地构造成通过轴旋转地驱动叶轮的电机。控制器与所述磁性轴承通信并且构造成给线圈供电并且提供旋转地支撑所述轴的磁场。
附图说明
结合附图阅读下面的详细说明将可以进一步理解本发明。
图1为具有带有磁性轴承的制冷压缩机的制冷系统的示意图。
图2为示例性磁性轴承组件的透视图。
图3为支撑在环内的绝缘的迭片结构的透视图。
图4为一部分绝缘的迭片结构的放大的局部分解图。
图5为沿着在图4中的5-5线剖开的绝缘的迭片结构的剖视图。
图6为在图2中所示的磁性轴承组件的剖视图。
图7为沿着在图6中的7-7线剖开的磁性轴承组件的放大剖视图。
图8为与图7类似的放大剖视图,示出了可选的布置。
具体实施方式
参照图1,制冷系统12包括用于使得致冷剂循环流动的制冷压缩机10。制冷压缩机10包括在内部布置有电机16的外壳14。电机16借助轴20旋转地驱动叶轮18以泵送致冷剂。
叶轮18包括与致冷剂回路26流体连通的入口22和出口24,该致冷剂回路使得致冷剂循环流动至负载(例如冷却器28)。致冷剂回路26还包括冷凝器、蒸发器和膨胀装置(未示出)。
轴20通过径向磁性轴承组件30而相对于外壳14被旋转地支撑。控制器32与磁性轴承组件30通信以给磁性轴承组件30供电从而产生出用来支撑轴20的磁场,并且在制冷压缩机10的操作期间控制其特性。
在图2和6中更详细地示出了一种类型的磁性轴承组件30。该磁性轴承组件30包括支撑在环36内的环形迭片结构34。环36安装在外壳14中。线圈38与磁性迭片34合作以在位于迭片和轴20之间的气隙中产生出磁场。在该实施例中,将四个在周向上间隔开的线圈38安装到迭片结构34上。在图1中最清楚地看出,导线40使得线圈38与控制器32电连接。
希望使得线圈38彼此绝缘并且与迭片结构34绝缘,以防止在磁性轴承组件30内出现短路。迭片结构34包括线圈孔48,这些线圈孔在迭片结构34的相对侧面42、44之间延伸以使得线圈38能够在相对侧面42、44之间通过。迭片结构34包覆模制有绝缘部52,而不是使用分立的NOMEX板来使得线圈38彼此绝缘以及与迭片结构34绝缘。在包覆模制过程期间粘附在迭片结构34上的绝缘部52可以由例如聚苯硫醚(polyphenolin sulfide)或PEEK构成。将绝缘部52选择为提供良好的模制和绝缘特性以及对致冷剂的耐受性。
迭片结构34包括在其内布置有轴20的内径部分50和接合着环36的外径部分51。在所示的实施例中,绝缘部52不必围绕着迭片结构34的整个外部延伸或者包围着该整个外部。而是,绝缘部52围绕着相对侧面42、44的、位于线圈38下方且邻近内径部分50的部分被模制。
在一个实施例中,内径部分50中的间隙59与线圈孔48相互连接,如图3和4所示那样。绝缘部52包括从外径部分51径向向内定位的外周缘54。在一个实施例中,外周缘54在冷却孔46之间周向地延伸,这些冷却孔与致冷剂回路26流体连通。绝缘部52从外周缘54向内周缘56径向向内延伸,自内径部分50稍微径向向外而终止。绝缘部52设在间隙59中并且围绕线圈孔48延伸,以形成在相对侧面42、44之间延伸的线圈孔衬里58,这在图5中最清楚地示出。壁60将线圈孔48二等分并且将线圈孔衬里58的相对侧面相互连接,以形成在图4、5和7中所示的第一开口64和第二开口66。
参照图7,在第一开口64和第二开口66的每个开口中设有来自各线圈38的邻接的线圈部分62。壁60使得这些线圈部分62相互绝缘。线圈孔衬里58以及在外周缘54和内周缘56之间延伸的一部分绝缘部52使得线圈38与迭片结构34绝缘。希望在线圈部分62的彼此面对的部分上设置带68,以在线圈部分62之间提供进一步的绝缘。
在图8中示出了另一个实施方案。相同的附图标记表示相同的元件。在线圈孔148的第一开口164和第二开口166的每个开口中设有来自各线圈138的邻接的线圈部分162。用来使得线圈部分162相互绝缘的壁160终止在位于间隙159中或位于间隙159附近的终止端部70中。设在终止端部70和线圈孔衬里158之间的开口将第一开口164和第二开口166相互连接并且便于将线圈138组装到迭片结构134中。线圈孔衬里158以及在外周缘154和内周缘156之间延伸的一部分绝缘部152使得线圈138与迭片结构134绝缘。希望在各线圈部分162的彼此面对的部分上设置带168,以在线圈部分162之间提供进一步的绝缘。
虽然已经对示例性的实施方案进行了说明,但是本领域技术人员将知道在权利要求书的范围内可以作出一些变型。为此,应该研究下面的权利要求来确定其真实范围和内容。
Claims (16)
1.一种制冷压缩机,包括:
电机,所述电机构造成借助轴旋转地驱动叶轮;
磁性轴承组件,所述磁性轴承组件包括在内部设有所述轴的内径部分,所述磁性轴承组件具有迭片结构、连续整体绝缘层以及线圈,所述迭片结构具有在相对侧面之间延伸的线圈孔,所述绝缘层设在所述线圈孔内和所述相对侧面上,所述线圈设在所述线圈孔内并且在所述线圈孔之间延伸;以及
控制器,所述控制器与所述磁性轴承组件通信,并且构造成给线圈供电并且提供旋转地支撑所述轴的磁场,
其中所述绝缘层在所述线圈孔内提供线圈孔衬里,并且提供位于所述线圈孔内的壁,所述壁邻接线圈孔衬里并且将线圈孔二等分为第一开口和第二开口,在所述第一开口和第二开口的每个开口中布置线圈部分,并且所述线圈部分通过所述壁相互电绝缘。
2.如权利要求1所述的制冷压缩机,包括外壳和环,所述电机和叶轮布置在所述外壳内,所述环将所述磁性轴承组件支撑在所述外壳中。
3.如权利要求2所述的制冷压缩机,其中所述迭片结构包括接合所述环的外径部分,并且所述绝缘层包括位于所述线圈下方并且布置在所述外径部分的径向内侧的外周缘。
4.如权利要求3所述的制冷压缩机,其中所述线圈孔包括径向向内面对并在所述内径部分处提供断开部的间隙,并且所述绝缘层用所述线圈孔衬里填充所述间隙。
5.如权利要求1所述的制冷压缩机,包括与所述叶轮流体连通的致冷剂回路,并且其中所述迭片结构包括在所述相对侧面之间延伸的冷却孔,所述冷却孔与所述致冷剂回路流体连通。
6.一种磁性轴承组件,包括:
迭片结构,所述迭片结构具有在相对侧面之间延伸的线圈孔;
连续整体绝缘层,所述绝缘层布置在所述相对侧面上并且布置在所述线圈孔内从而提供线圈孔衬里,并且所述绝缘层提供位于所述线圈孔内的壁,所述壁邻接线圈孔衬里并且将所述线圈孔二等分为第一开口和第二开口;以及
线圈部分,所述线圈部分设置在所述第一开口和第二开口的每个开口中并且通过所述壁相互电绝缘。
7.如权利要求6所述的磁性轴承组件,其中所述绝缘层包括位于所述线圈下方并且布置在所述迭片结构的外径部分的径向内侧的外周缘。
8.如权利要求6所述的磁性轴承组件,其中所述线圈孔包括径向向内面对并在所述迭片结构的内径部分处提供断开部的间隙,并且所述绝缘层用所述线圈孔衬里填充所述间隙。
9.如权利要求8所述的磁性轴承组件,其中所述壁从所述间隙径向向外延伸到所述线圈孔衬里的相对部分。
10.如权利要求7所述的磁性轴承组件,其中冷却孔围绕着所述迭片结构周向间隔开并且在所述相对侧面之间延伸,所述绝缘层包括径向延伸到所述冷却孔的外周缘。
11.如权利要求7所述的磁性轴承组件,包括接合所述外径部分的环。
12.如权利要求7所述的磁性轴承组件,其中所述线圈孔包括径向向内面对并在所述迭片结构的内径部分处提供断开部的间隙,并且所述壁终止在与所述间隙相邻的终止端部中,从而在所述绝缘层中提供用来将所述第一开口和第二开口相互连接的开口。
13.一种轴承组,包括:
磁性层,这些磁性层相互层叠从而形成具有相对侧面的环状体,并且包括围绕着所述环状体周向间隔开并且在所述相对侧面之间延伸的多个线圈孔;以及
连续整体绝缘层,所述绝缘层布置在所述相对侧面上并且布置在所述线圈孔内从而形成线圈孔衬里,并且提供在所述线圈孔内的壁,所述壁邻接所述线圈孔衬里并且将所述线圈孔二等分为第一开口和第二开口,
其中所述线圈孔包括径向向内面对并在迭片结构的内径部分处提供断开部的间隙,并且所述壁终止在与所述间隙相邻的终止端部中,从而在所述绝缘层中形成用来将所述第一开口和第二开口相互连接的开口。
14.如权利要求13所述的轴承组,其中所述线圈孔包括径向向内面对并在所述环状体的内径部分处提供断开部的间隙,并且所述绝缘层用所述线圈孔衬里填充所述间隙。
15.如权利要求14所述的轴承组,其中所述壁从所述间隙径向向外延伸至所述线圈孔衬里的相对部分。
16.如权利要求13所述的轴承组,包括冷却孔,所述冷却孔围绕着所述环状体周向间隔开并且在所述相对侧面之间延伸,所述绝缘层包括径向延伸到所述冷却孔的外周缘。
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PCT/US2010/043481 WO2012015398A1 (en) | 2010-07-28 | 2010-07-28 | Refrigerant compressor magnetic bearing |
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CN102959834B true CN102959834B (zh) | 2017-10-20 |
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US (1) | US9624939B2 (zh) |
EP (1) | EP2599190B1 (zh) |
CN (1) | CN102959834B (zh) |
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US10044240B2 (en) * | 2015-09-18 | 2018-08-07 | Mando Corporation | Three phase motor in which structure for preventing electrical short circuit is applied |
EP3601804B1 (en) * | 2017-03-24 | 2022-08-03 | Johnson Controls Tyco IP Holdings LLP | Magnetic bearing motor compressor |
EP3712434B1 (en) | 2019-03-20 | 2021-12-22 | Danfoss A/S | Check valve damping |
US11698076B2 (en) * | 2021-02-15 | 2023-07-11 | Danfoss A/S | Refrigerant compressor including insulation for magnetic bearing assembly |
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- 2010-07-28 WO PCT/US2010/043481 patent/WO2012015398A1/en active Application Filing
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CN101158376A (zh) * | 2007-11-15 | 2008-04-09 | 苏州大学 | 磁悬浮电机轴承结构 |
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WO2012015398A1 (en) | 2012-02-02 |
AU2010358053A1 (en) | 2013-01-10 |
US9624939B2 (en) | 2017-04-18 |
CN102959834A (zh) | 2013-03-06 |
AU2010358053B2 (en) | 2015-06-11 |
US20130039786A1 (en) | 2013-02-14 |
EP2599190A1 (en) | 2013-06-05 |
EP2599190B1 (en) | 2016-08-17 |
EP2599190A4 (en) | 2014-12-03 |
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