CN101506489B - 电动增压器 - Google Patents
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- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
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- F02B39/005—Cooling of pump drives
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/12—Cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/14—Casings modified therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/02—Gas passages between engine outlet and pump drive, e.g. reservoirs
- F02B37/025—Multiple scrolls or multiple gas passages guiding the gas to the pump drive
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/04—Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump
- F02B37/10—Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump at least one pump being alternatively or simultaneously driven by exhaust and other drive, e.g. by pressurised fluid from a reservoir or an engine-driven pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/02—Drives of pumps; Varying pump drive gear ratio
- F02B39/08—Non-mechanical drives, e.g. fluid drives having variable gear ratio
- F02B39/10—Non-mechanical drives, e.g. fluid drives having variable gear ratio electric
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
- F02C6/04—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output
- F02C6/10—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output supplying working fluid to a user, e.g. a chemical process, which returns working fluid to a turbine of the plant
- F02C6/12—Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure
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- H—ELECTRICITY
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- H02K—DYNAMO-ELECTRIC MACHINES
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- H—ELECTRICITY
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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
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
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- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
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- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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- H02K9/00—Arrangements for cooling or ventilating
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- H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
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- 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
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- F05D2220/76—Application in combination with an electrical generator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
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- 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
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Abstract
电机定子(24)由定子铁心(24a)及定子绕组(24b)和将二者埋设在内部的导热系数高的模制部件(30)构成。模制部件(30)具有与包围电机转子(22)的内面和轴向外面紧贴的隔热层(32)。并且具备与模制部件(30)的外周面及轴承壳体(16)的内面紧贴,与轴承壳体之间构成液密式的水冷套(26b)的外部套筒(26)。
Description
技术领域
本发明涉及一种内置有电动机的电动增压器。
背景技术
将利用压缩机提高了密度的空气提供给发动机(engine)的情况称为增压(supercharging),在进行这样的增压时,将通过发动机的排气能量来提供压缩机的驱动功的装置称为排气涡轮增压器(exhaust-gas turbocharger)。
排气涡轮增压器一般由隔着轴承单元配置的压缩机(compressor)和涡轮构成,压缩机内置有压缩机叶轮,涡轮内置有涡轮叶轮。压缩机叶轮和涡轮叶轮通过被轴承单元支承的连接轴(轴)相互连结,由发动机的排气旋转驱动涡轮叶轮,经由连接轴将该旋转力传递给压缩机叶轮,利用压缩机叶轮压缩空气,而对发动机进行增压。
在上述的排气涡轮增压器中,已经提出了一种为了辅助低速旋转时的加速而内置有电动机的方案(例如专利文献1、2)。下面,将这种内置了电动机的排气涡轮增压器简单称为“电动增压器”。
此外,作为电动增压器的空冷系统,提出了专利文献3。
专利文献1的涡轮增压器(turbo charger)如图1所示,具备旋转驱动转子的电动机(定子51和转子52)。转子由涡轮叶轮53、压缩机叶轮54、连结二者的轴55及安装有电动机的转子52的间隔轴环56构成。轴55被单一的半浮式轴承57支承。该半浮式轴承57具有与涡轮53的轮毂53a抵接的推力面57a、和与间隔轴环56抵接的推力面57b。
根据该构成,借助分别与涡轮的轮毂53a和间隔轴环56卡合的半浮式轴承57的推力面57a、57b,由壳体50支承对转子作用的推力。
专利文献2的电机辅助增压器如图2所示,具有:由压缩机叶轮61的轴向延长部61a支承的转子62、和与该转子62向半径方向外方隔开间隔地被壳体63支承的定子64。
专利文献3的空冷系统如图3所示,具有下述电动机,所述电动机中与内燃机71连结的涡轮增压器72被收容在电机壳体73内,电机壳体73具有出入口73a、73b。涡轮增压器72还具有压缩机74和压缩机的出入口74a、74b。并且,第一冷却软管75借助中间冷却器76将压缩机出口74a与电机壳体入口73b连结,第二冷却软管77将电机壳体出口73a与压缩机入口74b连结,对电动机进行冷却,使加热后的空气再次循环到压缩机74中。
专利文献1:美国专利第6,449,950号说明书“ROTOR AND BEARINGSYSTEM FOR ELECTRICALLY ASSISTED TURBOCHARGER”
专利文献2:美国专利第6,032,466号说明书“MOTOR-ASSISTEDTURBOCHARGERS FOR INTERNAL COMBUSTION ENGINES”
专利文献3:美国专利第6,009,375号说明书“AIR COOL ING SYSTEMFOR ELECTRIC ASSISTED TURBOCHARGER”
在电动增压器中,由于内置的电动机的定子(电机定子)及转子(电机转子)因涡电流等而发热,所以,需要对它们高效率地进行冷却。
但是,在如专利文献1那样,从轴向两侧用两个电动机用壳体58a、58b把持定子51的情况下,定子51的冷却只是借助壳体58a、58b的自然散热,存在着冷却性能低的问题。
而且,在专利文献2的例子中,虽然在壳体63上设置了与定子64的外周面相接的水冷套66,但由于来自被同样加热的压缩机叶轮61或转子62的热量输入大,所以,无法高效率地对定子整体进行冷却。
并且,在专利文献3的例子中,由于将被中间冷却器76冷却了的压缩空气供给到电机壳体73内,所以,能够对电机壳体内进行高效冷却,但由于循环使用压缩空气的一部分用于冷却,所以,向发动机供给的压缩空气量减少,导致表观上压缩机的效率降低。
发明内容
本发明是为了解决这样的问题点而提出的方案。即,本发明的目的在于,提供一种不使用压缩空气的一部分用于冷却,能够对电动机的定子整体高效率地进行冷却的电动增压器。
根据本发明,提供一种电动增压器,具备:在一端具有涡轮叶轮的涡轮轴、被涡轮轴旋转驱动的压缩机叶轮、将涡轮轴支承为能旋转的轴承壳体、被固定在轴承壳体内的电机定子、和由该电机定子旋转驱动的电机转子,其特征在于,
前述电机定子由定子铁心及定子绕组和将二者埋设在内部的导热系数高的模制部件构成,
并且具备外部套筒,所述外部套筒与模制部件的外周面及轴承壳体的内面紧贴,与轴承壳体之间构成液密式的水冷套。
而且,根据本发明,提供一种电动增压器,具备:在一端具有涡轮叶轮的涡轮轴、被涡轮轴旋转驱动的压缩机叶轮、将涡轮轴支承为能旋转的轴承壳体、被固定在轴承壳体内的电机定子、和由该电机定子旋转驱动的电机转子,其特征在于,
前述电机定子由定子铁心及定子绕组和将二者埋设在内部的导热系数高的模制部件构成,
前述模制部件具有与包围电机转子的内面(朝向半径方向内侧的面)和轴向外面(朝向轴向的面)紧贴的隔热层。
并且,前述模制部件由下述部件构成,即:内部埋设了定子铁心的由热传导性树脂构成的中空圆筒部;和与该中空圆筒部的轴向两端相接,在内部埋设有定子绕组的由热传导性树脂构成的朝外法兰部。
另外,前述外部套筒具有:与中空圆筒部及朝外法兰部的外面相接的内面(朝向半径方向内侧的面)和与朝外法兰部的轴向内面相接的内面(朝向轴向的面)。
此外,根据本发明,前述模制部件可以不由树脂构成,设置于成为水冷套的外部套筒的冷却水空间(即冷却水流经的空间)可以按照不露出到外部套筒的外部的方式,形成在外部套筒的内部。该情况下,根据本发明,提供一种电动增压器,具备:在一端具有涡轮叶轮的涡轮轴、被涡轮轴旋转驱动的压缩机叶轮、将涡轮轴支承为能旋转的轴承壳体、被固定在轴承壳体内的电机定子、和由该电机定子旋转驱动的电机转子,其特征在于,
前述电机定子由定子铁心及定子绕组和将二者埋设在内部的导热系数高的模制部件构成,
并且具备外部套筒,所述外部套筒与模制部件的外周面及轴承壳体的内面紧贴,且构成液密式水冷套,
前述模制部件由内部埋设了定子铁心的中空圆筒部;和与该中空圆筒部的轴向两端相接,在内部埋设有定子绕组的朝外法兰部构成;
前述外部套筒具有:与中空圆筒部及朝外法兰部的外面相接的内面和与朝外法兰部的轴向内面相接的内面。
根据上述本发明的构成,由于前述电机定子的模制部件在内部埋设有定子铁心及定子绕组,外部套筒与模制部件的外周面及轴承壳体的内面紧贴,与轴承壳体之间构成液密式的水冷套,所以,能够不将压缩空气的一部分用于冷却,能够通过水冷套将模制部件的外周面直接冷却,从而借助导热系数高的模制部件对定子铁心及定子绕组高效率地进行冷却。
而且,由于模制部件具有与包围电机转子的内面(朝向半径方向内侧的面)和轴向外面(朝向轴向的面)紧贴的隔热层,所以,可降低来自压缩机叶轮或电机转子的热量输入。
另外,由于模制部件由下述部件构成,即:内部埋设了定子铁心的由热传导性树脂构成的中空圆筒部;和与该中空圆筒部的轴向两端相接,在内部埋设有定子绕组的由热传导性树脂构成的朝外法兰部;且前述外部套筒具有:与中空圆筒部及朝外法兰部的外面相接的内面(朝向半径方向内侧的面)和与朝外法兰部的轴向内面相接的内面(朝向轴向的面),所以,能够通过水冷套从模制部件的前述内面对电动机的定子整体高效率地进行冷却。
即,模制部件与外部套筒的接触面积增大了相当于模制部件的朝外法兰部的轴向内面、和与之相接的外部套筒的内面(朝向轴向的面)的接触面积的量。通过该接触面积的增加,能够大幅提高构成电机定子的模制部件与构成水冷套的外部套筒之间的传热。另外,即使模制部件不由树脂构成也能得到该效果。
因此,能够在不降低压缩机效率的情况下,提高电机定子的冷却性能。
另外,在如上所述增加了模制部件与外部套筒的接触面积的情况下,由于朝外法兰部具有比中空圆筒部位于半径方向外侧的部分,所以,在该部分也能配置定子绕组(例如参照图5),相应地可增加定子绕组的绕数。
附图说明
图1是专利文献1的涡轮增压器的构成图。
图2是专利文献2的电机辅助增压器的构成图。
图3是专利文献3的空冷系统的构成图。
图4是本发明的电动增压器的整体构成图。
图5是图4的局部放大图。
具体实施方式
下面,参照附图对本发明的优选实施例进行说明。其中,对各附图中公共的部分赋予相同的附图标记,并省略重复的说明。
图4是本发明的电动增压器的整体构成图。在该图中,本发明的电动增压器10具备:涡轮轴12、压缩机叶轮14及壳体。在该实例中,壳体由轴承壳体16、涡轮壳体18及压缩机壳体20构成。
涡轮轴12在一端(图中左端)具有涡轮叶轮11。在该实例中,涡轮叶轮11与涡轮轴12一体形成,但本发明不限定于此,也可以是独立安装涡轮叶轮11的构成。
压缩机叶轮14按照与涡轮轴12一体旋转的方式通过轴端螺母15与涡轮轴12的另一端(图中右端)连结。
轴承壳体16通过轴衬17a可旋转地支承涡轮轴12。而且,涡轮轴12被推力轴环17b及推力轴承17c、17d支承为在轴向不移动。并且,轴承壳体16具有用于润滑轴衬17a、推力轴环17b及推力轴承17c、17d的未图示的润滑油流路。
涡轮壳体18将涡轮叶轮11包围成可旋转,且与轴承壳体16连结。该涡轮壳体18具有:从外部向内部导入排气的涡旋室18a、和将排气从涡旋室18a引导至涡轮叶轮11的形成为环状的流路18b。
并且,在流路18b中,沿周方向以一定的间隔配置有多个喷嘴翼19。优选该喷嘴翼19是可变喷嘴翼,可以改变在其间形成的流路面积,但本发明不限定于此,也可以是固定喷嘴翼或没有喷嘴的方式。
压缩机壳体20将压缩机叶轮14包围成可旋转,且与轴承壳体16连结。该压缩机壳体20具有:向内部导入压缩空气的涡旋室20a、和将压缩空气从压缩机叶轮14引导至涡旋室20a的形成为环状的流路20b。
根据上述的构成,可利用发动机的排气旋转驱动涡轮叶轮11,借助涡轮轴12将该旋转力传递给压缩机叶轮14,通过压缩机叶轮14压缩空气,而对发动机进行增压。
在图4中,本发明的电动增压器10还具备电机转子22及电机定子24。
电机转子22是电动机的转子,电机定子24是电动机的定子。由电机转子22和电机定子24构成不带电刷的交流电动机。
优选该交流电动机可以对应涡轮轴12的高速旋转(例如至少10~20万rpm),且可实现加速时的旋转驱动和减速时的再生运转。另外,优选该交流电动机的驱动电压与搭载于车辆的电池的直流电压(例如12V)相同或比其高。
图5是图4的局部放大图。如图4、5所示,电机转子22通过相互嵌合被固定在涡轮轴12或压缩机叶轮14的侧面。
在图5中,电机定子24由定子铁心24a及定子绕组24b和将它们埋设到内部的导热系数高的模制部件30构成。另外,模制部件30具有与包围电机转子22的内面(即朝向半径方向内侧的面)和轴向外面(即朝向轴向的面)紧贴的隔热层32。换言之,隔热层32被设置成与模制部件30的该内面和该轴向外面紧贴。
模制部件30可以由导热系数高的材料,例如石墨、硅、塑料等构成。而隔热层32可以是不使电机定子24的磁场减弱的薄层状,且由导热系数低的材料,例如泡沫塑料、石英棉等构成。这里,导热系数高的材料是指导热系数为1W/(m·K)以上的材料。
另外,隔热层32的模制部件30的安装,可以采用粘接,也可以一体模制。
而且,在该实例中,模制部件30由下述部件构成:在内部埋设了定子铁心24a的由热传导性树脂构成的中空圆筒部30a;和与中空圆筒部30a的轴向两端相接,在内部埋设有定子绕组24b的由热传导性树脂构成的朝外法兰部30b。
并且,本发明的电动增压器10还具备外部套筒(outer sleeve)26和密封板28。
外部套筒26与模制部件30的外周面及轴承壳体16的内面紧贴,与轴承壳体16之间构成液密式的水冷套26b。
并且,本发明的电动增压器10具有对轴承壳体16和外部套筒26之间进行液密式密封并在轴向隔开间隔的密封部件25a、25b。密封部件25a在该实例中是对轴承壳体16的内周面进行密封的O形环,密封部件25b在该实例中是对凸缘部26a的轴向内面进行密封的O形环。另外,也可以将密封部件25a、25b双方设成对朝向半径方向的面(例如轴承壳体16的上述内周面)进行密封,或者对朝向轴向的面(例如凸缘部26a的上述轴向内面)进行密封的O形环,或者还可以使用其他的密封件。
根据该构成,在轴承壳体16与外部套筒26之间构成液密式的水冷套26b。从未图示的冷却水供给口和冷却水排出口向该水冷套26b供给、排出冷却水。
密封板28与外部套筒26的凸缘部26a一同沿轴向被紧固在轴承壳体16与压缩机壳体20之间。
该密封板28将压缩机壳体20与电机定子24之间隔开,且紧贴在外部套筒26的压缩机侧。
根据上述本发明的构成,由于电机定子24的模制部件30在内部埋设有定子铁心24a及定子绕组24b,外部套筒26与模制部件24的外周面及轴承壳体16的内面紧贴,与轴承壳体之间构成液密性的水冷套26b,所以,可以不将压缩空气的一部分用于冷却,通过水冷套26b将模制部件30的外周面直接冷却,借助导热系数高的模制部件30对定子铁心24a及定子绕组24b高效率地进行冷却。
而且,由于模制部件30具有与包围电机转子22的内面(即朝向半径方向内侧的面)和轴向外面(即朝向轴向的面)紧贴的隔热层32,所以,能够降低来自压缩机叶轮14或电机转子22的热量输入。
并且,由于模制部件30由在内部埋设了定子铁心24a并由热传导性树脂构成的中空圆筒部30a;和与中空圆筒部30a的轴向两端相接,在内部埋设有定子绕组24b并由热传导性树脂构成的朝外法兰部30b构成,外部套筒26具有与中空圆筒部30a及朝外法兰部30b的外面相接的内面(即朝向半径方向内侧的面)和与朝外法兰部30b的轴向内面相接的内面(即朝向轴向的面),所以,能够通过水冷套26b从模制部件30的该内面对电动机的定子整体高效率地进行冷却。
即,模制部件30与外部套筒26的接触面积增大了相当于模制部件30的朝外法兰部30b的轴向内面、和与之相接的外部套筒26的内面(朝向轴向的面)的接触面积的量。通过该接触面积的增加,能够大幅提高构成电机定子24的模制部件30与构成水冷套26b的外部套筒26之间的传热。另外,即使模制部件30不由树脂构成也能得到该效果。即,根据本发明,模制部件30可以不由树脂构成。此外,该情况下,设置于成为水冷套的外部套筒26的冷却水空间(即冷却水流经的空间)可以按照不露出到外部套筒26的外部的方式,形成在外部套筒26的内部。
因此,能够在不降低压缩机效率的情况下,提高电机定子24的冷却性能。
另外,在如上所述增加了模制部件30与外部套筒26的接触面积的情况下,由于朝外法兰部30b具有比中空圆筒部30a位于半径方向外侧的部分,所以,在该部分也能配置定子绕组24b(例如参照图5),相应地可增加定子绕组24b的绕数。
另外,本发明不限定于上述的实施方式,在不脱离本发明的主旨范围,当然可进行各种变更。
Claims (4)
1.一种电动增压器,具备:在一端具有涡轮叶轮的涡轮轴、被涡轮轴旋转驱动的压缩机叶轮、将涡轮轴支承为能旋转的轴承壳体、被固定在轴承壳体内的电机定子、和由该电机定子旋转驱动的电机转子,其特征在于,
前述电机定子由定子铁心及定子绕组和将二者埋设在内部的导热系数高的模制部件构成,
并且具备外部套筒,所述外部套筒与模制部件的外周面及轴承壳体的内面紧贴,与轴承壳体之间构成液密式的水冷套,
前述模制部件由下述部件构成,即:内部埋设了定子铁心的由热传导性树脂构成的中空圆筒部;和与该中空圆筒部的轴向两端相接,在内部埋设有定子绕组的由热传导性树脂构成的朝外法兰部。
2.一种电动增压器,具备:在一端具有涡轮叶轮的涡轮轴、被涡轮轴旋转驱动的压缩机叶轮、将涡轮轴支承为能旋转的轴承壳体、被固定在轴承壳体内的电机定子、和由该电机定子旋转驱动的电机转子,其特征在于,
前述电机定子由定子铁心及定子绕组和将二者埋设在内部的导热系数高的模制部件构成,
前述模制部件由下述部件构成,即:内部埋设了定子铁心的由热传导性树脂构成的中空圆筒部;和与该中空圆筒部的轴向两端相接,在内部埋设有定子绕组的由热传导性树脂构成的朝外法兰部,具有与包围电机转子的内面和轴向外面紧贴的隔热层。
3.根据权利要求1至2中任一项所述的电动增压器,其特征在于,
前述外部套筒具有:与中空圆筒部及朝外法兰部的外面相接的内面和与朝外法兰部的轴向内面相接的内面。
4.一种电动增压器,具备:在一端具有涡轮叶轮的涡轮轴、被涡轮轴旋转驱动的压缩机叶轮、将涡轮轴支承为能旋转的轴承壳体、被固定在轴承壳体内的电机定子、和由该电机定子旋转驱动的电机转子,其特征在于,
前述电机定子由定子铁心及定子绕组和将二者埋设在内部的导热系数高的模制部件构成,
并且具备外部套筒,所述外部套筒与模制部件的外周面及轴承壳体的内面紧贴,且构成液密式水冷套,
前述模制部件由内部埋设了定子铁心的中空圆筒部;和与该中空圆筒部的轴向两端相接,在内部埋设有定子绕组的朝外法兰部构成;
前述外部套筒具有:与中空圆筒部及朝外法兰部的外面相接的内面和与朝外法兰部的轴向内面相接的内面。
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-
2007
- 2007-07-04 EP EP07790430.8A patent/EP2067960B1/en not_active Ceased
- 2007-07-04 JP JP2008529828A patent/JP4941782B2/ja active Active
- 2007-07-04 US US12/377,987 patent/US8157544B2/en not_active Expired - Fee Related
- 2007-07-04 CN CN2007800305440A patent/CN101506489B/zh not_active Expired - Fee Related
- 2007-07-04 WO PCT/JP2007/063353 patent/WO2008020511A1/ja active Application Filing
- 2007-07-04 KR KR1020097002939A patent/KR101176928B1/ko active IP Right Grant
Also Published As
Publication number | Publication date |
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KR101176928B1 (ko) | 2012-08-30 |
EP2067960A4 (en) | 2013-01-16 |
EP2067960B1 (en) | 2015-09-23 |
EP2067960A1 (en) | 2009-06-10 |
JP4941782B2 (ja) | 2012-05-30 |
KR20090056975A (ko) | 2009-06-03 |
US20100247343A1 (en) | 2010-09-30 |
WO2008020511A1 (fr) | 2008-02-21 |
US8157544B2 (en) | 2012-04-17 |
JPWO2008020511A1 (ja) | 2010-01-07 |
CN101506489A (zh) | 2009-08-12 |
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