CN100376801C - 用于汽车的真空泵 - Google Patents

用于汽车的真空泵 Download PDF

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CN100376801C
CN100376801C CNB200410074817XA CN200410074817A CN100376801C CN 100376801 C CN100376801 C CN 100376801C CN B200410074817X A CNB200410074817X A CN B200410074817XA CN 200410074817 A CN200410074817 A CN 200410074817A CN 100376801 C CN100376801 C CN 100376801C
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pump
cam
blade
cam portion
vane
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CN1719038A (zh
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李炫澈
朴顺植
安贤喆
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Valeo Mando Electrical Systems Korea Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00Rotary-piston machines or pumps
    • F04C2/30Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C18/3441Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/02Arrangements of pumps or compressors, or control devices therefor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01CROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08Rotary pistons
    • F01C21/0809Construction of vanes or vane holders
    • F01C21/0818Vane tracking; control therefor
    • F01C21/0827Vane tracking; control therefor by mechanical means
    • F01C21/0836Vane tracking; control therefor by mechanical means comprising guiding means, e.g. cams, rollers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C18/3441Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • F04C18/3442Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the inlet and outlet opening
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C25/00Adaptations of pumps for special use of pumps for elastic fluids
    • F04C25/02Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01CROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10Outer members for co-operation with rotary pistons; Casings
    • F01C21/104Stators; Members defining the outer boundaries of the working chamber
    • F01C21/108Stators; Members defining the outer boundaries of the working chamber with an axial surface, e.g. side plates
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2220/00Application
    • F04C2220/10Vacuum
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0042Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/0085Prime movers

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

本发明涉及一种用于汽车的真空泵。本发明的目的是提供一种用于汽车的真空泵,该真空泵能够以这样的方式减少摩擦产生的噪音,即在壳体板的中心形成偏心凸轮部分并改进该偏心凸轮部分的结构,且它们在上死点之后的部分处并不与叶片接触。

Description

用于汽车的真空泵
技术领域
本发明涉及一种用于汽车的真空泵,尤其是涉及一种用于汽车的真空泵,该真空泵能够以这样的方式防止由叶片产生的振动噪音,即通过改进壳体板(将泵转子插入该壳体板中)的凸轮部分的结构而防止在叶片和凸轮部分之间的任何干涉,当汽车发动机停止时,该凸轮部分由于惯性力和滑油粘性而进行较差滑动操作。
背景技术
通常,真空吸力用于多个目的。真空吸力通过驱动真空泵而产生,该真空泵直接与发动机的驱动轴连接,或者与交流发电机连接。图1是表示附加安装在汽车交流发电机10内的真空泵20的结构的视图。
如图1和2所示,泵转子21与交流发电机10的轴12啮合,该交流发电机10通过滑轮11承受来自发动机的驱动力。叶片22装配在泵转子21上。叶片22在泵室23内旋转,从而产生真空吸力。
当真空泵20的转速增加时,在泵转子21、叶片22和泵室23之间的摩擦增大。其中,摩擦引起接触部分的发热和磨损,从而降低了泵的使用寿命。
因此,在叶片22和泵转子21之间的滑动部分内提供有润滑剂,以便减小通过摩擦产生的热。
此外,润滑剂根据滑油泵(未示出)的运转而强制添加,该滑油泵为电子控制。不过,当汽车停止时,产生以下问题。
即,因为滑油泵根据功率来进行电子控制,因此当汽车熄火时该滑油泵停止。不过,在熄火后,真空泵通过施加给发动机曲轴的旋转惯性力而继续工作,然后当旋转惯性力削弱时停止。在润滑剂的供给停止的状态下,当真空泵在干模式下工作时,叶片和其它部件(壳体、板、泵转子等)之间的摩擦程度暂时增大。因此,当泵转子以低速旋转时,空气从排气部分倒流,从而在叶片上产生冲击和振动。
当在熄火或点火之后进行非常慢的旋转时,离心力降低,润滑油的粘性增加。这时,如图3中所示,需要凸轮部分25。在泵转子21旋转的初期阶段(这时离心力较弱,且润滑剂的粘性较高),通过泵转子21的旋转,凸轮部分25向上推动叶片22的下部。但是,尽管有凸轮部分25,该凸轮部分25还是不能很好地将叶片22的端部向上推动至泵壳体23的内表面上。因此,如图4所示,在叶片22的端部和泵壳体23的内表面之间有间隙。这样,该间隙使得空气能够从排气部分23b倒流。
当空气倒流时,在保持真空状态的壳体内部中产生按压叶片上侧的力。因此,叶片22通过上述力而与凸轮部分25碰撞或干涉,从而产生振动噪音。
发明内容
因此,本发明的一个目的是克服在普通技术中遇到的问题。
本发明的另一目的是提供一种用于汽车的真空泵,该真空泵即使在叶片压入叶片槽内时也能够这样防止噪音,即偏心凸轮部分形成于壳体板的中心,且该偏心凸轮部分凹入成不会在上死点(TDP)之后的部分处与叶片接触。
为了实现上述目的,本发明提供了一种用于汽车的真空泵,包括:轴,该轴承受旋转力;泵转子,该泵转子有轴孔,轴的端部插入该轴孔内;多个叶片,这些叶片装配在泵转子的叶片槽内;泵壳体,该泵壳体以使得叶片的端部与泵壳体的内表面接触的方式旋转;壳体板,该壳体板密封阻塞泵壳体的一个侧表面;凸轮部分,该凸轮部分有在凸轮开始点和凸轮上死点之间的柱形外周表面,并形成于壳体板的内表面中,这样,当泵转子在插入状态下旋转时叶片露出来;其特征在于:在凸轮的上死点和凸轮的端点之间提供有凹进部分,因此,当叶片旋转时,叶片的内端并不接触凸轮部分。
凹进部分包括:圆形凹进部分,其中,凸轮部分的半径逐渐减小;以及台阶形凹进部分,其中,凸轮部分的一部分被切除从而急剧减小。
附图说明
下面将参考附图更好地理解本发明,附图只是进行图示说明,因此并不是对本发明的限定,附图中:
图1是表示具有用于汽车的真空泵的交流发电机的横断面视图;
图2是表示图1的真空泵的分解透视图;
图3是表示普通真空泵的壳体板的结构的视图;
图4是用于描述普通真空泵的壳体板的凸轮部分运转的视图;
图5是表示本发明真空泵的壳体板的结构的视图;
图6是用于描述本发明壳体板的凸轮部分运转的视图;
图7是表示本发明另一实施例的壳体板的结构的视图。
具体实施方式
下面将参考附图介绍本发明的结构和运转。
图5是表示本发明真空泵的壳体板的结构的视图;而图6是用于描述本发明壳体板的凸轮部分运转的视图。
本发明的真空泵设计成旋转叶片类型,并包括:轴12,该轴12承受旋转力;泵转子21,该泵转子21有轴孔21a,轴12的端部插入该轴孔21a内;多个叶片22,这些叶片22装配在泵转子21的叶片槽21b上;泵壳体23,该泵壳体23具有内表面,该内表面与叶片22的端部接触;以及壳体板24,该壳体板24密封阻塞泵壳体的一个侧表面。
详细地,如图1所示,轴12有与交流发电机10的轴同心的轴线,该交流发电机10的轴承受来自发动机(未示出)的驱动力。
在本发明中,改进了壳体板24的凸轮部分25的结构,且在凸轮的凸轮端点和上死点之间的部分中提供有凹进部分26。
如图5所示,凹进部分26可以由圆形凹进部分26a形成,该圆形凹进部分26a这样形成,即凸轮部分的半径部分逐渐减小。如图7所示,凹进部分26可以由台阶形凹进部分26b形成,该台阶形凹进部分这样形成,即凸轮部分的一部分被切除从而急剧减小。
如图6所示,当泵转子21通过轴12而旋转时,插入泵转子21的叶片槽21b内的叶片22从叶片槽21b中露出,从而排出内部空气。
当插入泵转子21的叶片槽21b中的叶片22在它们通过离心力而插入壳体底部的状态下旋转时,空气从布置在泵壳体23一侧的吸入部分23a而吸入,并通过布置在泵壳体23的另一侧的排气部分23b而排出。
因此,在与吸入部分23a相连的密封空间中产生真空吸力,该真空吸力用于汽车的制动装置。
当在发动机起动时润滑剂的粘性较高时,壳体板24的凸轮部分25帮助使得叶片22并不露出来。
即,在凸轮部分25的凸轮起始点25a处,叶片22的下端被向上推,并凸出到外部,而在凸轮部分25的上死点25b之后,叶片插入叶片槽21b内。在本发明中,凸轮部分25由凹进部分26形成,因此叶片22的内端直到凸轮的端点25c才与凸轮部分25的表面接触。
因此,即使当发动机开始起动时润滑剂的粘性较高,从而使得叶片不能平滑滑动,且从排气口23b倒流的空气作用在叶片22上时,因为叶片22的内端并不与凸轮部分25接触,所以使防止振动噪音成为可能。
除了以下操作外,图5的圆形凹进部分26a和图7的台阶形凹进部分26b的工作情况相同。即,在圆形凹进部分26a中,叶片22出现和消失的返回操作更平滑地进行,而与圆形凹进部分26a相比,台阶形凹进部分26b制造工艺更容易。
如上所述,在本发明中,通过改进壳体板的凸轮部分的结构以便使叶片的内端不进行接触,从而即使当空气从排气部分倒流并影响叶片或产生振动时,也可以防止振动噪音。
在不脱离本发明的精神或基本特征的情况下,本发明可以以多种方式实施,还应当知道,除非另外有限定,上述实例并不局限于前述说明的任何具体内容,而是应当在附后的权利要求书所限定的精神和范围内作宽泛的解释,因此落在权利要求的交集和并集范围内的所有改变和变化形式或这种交集和并集的等同形式都将包括在该附后的权利要求书中。

Claims (3)

1.一种用于汽车的真空泵,包括:轴(12),该轴(12)承受旋转力;泵转子(21),该泵转子(21)有轴孔(21a),轴(12)的端部插入该轴孔(21a)内;多个叶片(22),这些叶片(22)装配在泵转子(21)的叶片槽(21b)内;泵壳体(23),该泵壳体(23)以使得叶片(22)的端部与泵壳体的内表面接触的方式旋转;壳体板(24),该壳体板(24)密封阻塞泵壳体(23)的一个侧表面;凸轮部分(25),该凸轮部分(25)有在凸轮开始点(25a)和凸轮上死点(TDP)(25b)之间的柱形外周表面,并形成于壳体板(24)的内表面中,这样,当泵转子(21)在插入状态下旋转时叶片(22)露出来;其特征在于:在凸轮的上死点(25b)和凸轮的端点(25c)之间提供有凹进部分(26),因此,当叶片(22)旋转时,叶片的内端并不接触凸轮部分(25)。
2.根据权利要求1所述的真空泵,其特征在于:所述凸轮部分(25)包括凹进部分(26),该凹进部分(26)有圆形凹进部分(26a),这样,凸轮部分的半径逐渐减小。
3.根据权利要求1所述的真空泵,其特征在于:所述凸轮部分(25)包括凹进部分(26),该凹进部分(26)有台阶形凹进部分(26b),这样,凸轮部分的一部分进行切除并急剧减小。
CNB200410074817XA 2004-07-06 2004-08-30 用于汽车的真空泵 Expired - Fee Related CN100376801C (zh)

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DE602004003041T2 (de) 2007-06-06
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KR20060003986A (ko) 2006-01-12
EP1614601B1 (en) 2006-11-02

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