CN101087951B - 直线压缩机 - Google Patents

直线压缩机 Download PDF

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Publication number
CN101087951B
CN101087951B CN2005800442913A CN200580044291A CN101087951B CN 101087951 B CN101087951 B CN 101087951B CN 2005800442913 A CN2005800442913 A CN 2005800442913A CN 200580044291 A CN200580044291 A CN 200580044291A CN 101087951 B CN101087951 B CN 101087951B
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piston
pump chamber
linear compressor
oscillating body
transmission bar
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CN101087951A (zh
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J·布兰德
J·舒伯特
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Enbraco Compressor Industry and Refrigeration Solutions Co., Ltd.
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BSH Bosch und Siemens Hausgeraete GmbH
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F04B35/045Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric using solenoids

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Reciprocating Pumps (AREA)
  • Compressor (AREA)

Abstract

本发明涉及一种直线压缩机,它具有:一个泵腔(14),活塞(15)可在该泵腔中往复运动;一个与该泵腔(14)固定地连接的框架(1,2),振动体(8)通过至少一个弹簧(4,5)可往复运动地保持在该框架上;至少一个装配在该框架(1,2)上的电磁体,所述电磁体用于驱动该振动体(8)往复运动。一个传递杆(9)通过一个第一挠性件(12)与该活塞(15)并且通过一个第二挠性件(11)与该振动体(8)相连接。

Description

直线压缩机
技术领域
本发明涉及一种直线压缩机、尤其是适用于在制冷装置中压缩制冷剂的直线压缩机。
背景技术
由US 6 641 377 B2公开了一种直线压缩机,该直线压缩机具有:一个泵腔,活塞可在该泵腔中往复运动;一个与泵腔固定地连接的框架,振动体可通过至少一个弹簧在该框架上往复运动;一个装配在框架上的电磁体,该电磁体用于驱动振动体往复运动;以及一个传递杆,该传递杆使振动体与活塞相连接。
所述弹簧是膜片弹簧,该膜片弹簧的边缘固定在环状地包围泵腔的框架上并且杯状的振动体和活塞杆的一个端部螺纹连接在该膜片弹簧的中心点上。活塞杆的另一个端部是球状的并且嵌入到一个形成在活塞上的碗状部中,由此,活塞杆和活塞可彼此相对摆动运动。该可摆动运动性避免转矩从振动体通过活塞杆传递到活塞上,这种转矩可导致活塞在泵腔中歪斜并且难于运动。为了获得抵抗歪斜的足够的可靠性,活塞必须具有相当大的长度。与此相应,在泵腔中需要大的位置用于活塞,由此使泵腔容积与通流量的比例更可能不利。
但活塞杆也可将相对于活塞在泵腔中的运动方向横向地取向的力传递到活塞上,这种力将该活塞压在泵腔的侧壁上。活塞与侧壁之间的滑动接触会导致显著的摩擦磨损,由此在所述文献中提出在侧壁与活塞之间形成可避免这种接触的空气支承,其方式是压缩的气体从直线压缩机的高压侧分流出并且经侧壁中的开口被导回到泵腔中。只要气体通流量足够高,在此沿着侧壁形成的气体膜就避免泵腔壁与活塞之间的直接接触。
可由活塞杆施加在活塞上的横向力越大,所返回的气体就必须越多,以便避免活塞与壁接触。由此使得压缩机的效率降低。
发明内容
本发明的任务在于,提供一种直线压缩机,在该直线压缩机中,横向力从振动体到活塞的传递被降低到最小程度。
该任务这样来解决,即,本发明提出了一种直线压缩机,它具有:一个泵腔,活塞可在该泵腔中往复运动;一个与该泵腔固定地连接的框架,振动体通过至少一个弹簧可往复运动地保持在该框架上;至少一个装配在该框架上的电磁体,所述电磁体用于驱动该振动体往复运动;以及一个传递杆,该传递杆与该振动体相连接,并且通过一个第一挠性件与该活塞相连接,其特征在于:与活塞挠性连接的传递杆与振动体的连接通过一个第二挠性件形成。
传递杆因此可基本上仅将拉力和推力传递到活塞上,但不传递值得一提的侧向力。
第二挠性件可特别简单且廉价地各通过一个可弹性弯曲的棒构成。
优选所述棒各与传递杆构造成一体的并且比该传递杆细,以便获得可弯曲性的必需的程度。
第一挠性件优选使传递杆与一个刚性地锚接在活塞上并且在泵腔中被导向的活塞杆相连接。
附图说明
本发明的其它特征和优点从下面参照附图对实施例进行的说明中得出。附图表示:
图1根据本发明的直线压缩机的立体视图;
图2传递杆、泵腔和振动体的一部分在理想定向情况下的细节;以及
图3和图4活塞和振动体的非理想定向的实际中重要的两种情况各与图2类似的视图。
具体实施方式
图1中以立体视图表示的直线压缩机具有一个刚性的、在俯视图中呈大致U形的框架,该框架由三部分组成,即两个扁平的壁段1和一个弓形件2。在该弓形件2与所述两个壁段1的彼此面对的窄侧面之间夹入一个第一膜片弹簧3;一个与膜片弹簧3相同构型的第二膜片弹簧4固定在壁段1的背离弓形件的窄侧面上。用弹簧板冲制的膜片弹簧3、4各具有一个长形延伸的边缘条和四个弹簧臂5,所述边缘条与壁段1的窄侧面重叠,所述弹簧臂呈之字形从边缘条的端部起朝中间区段6延伸,所述弹簧臂在该中间区段上会合。中间区段6各具有三个孔:两个外部的孔和一个中间的孔,一个永磁性的振动体8借助于螺钉或铆钉7悬置在这些外部的孔上,对于膜片弹簧3一个例如通过螺纹连接固定在振动体8上的杆区段10延伸穿过该中间的孔。杆区段10通过一个可柔性弯曲的变细的区段11与一个在本情况中由弹簧钢构成的传递杆9相连接。一个变细的第二区段12使传递杆11与一个活塞杆13一体地连接,该活塞杆插入到一个由弓形件2承载的泵腔14中、通过泵腔的端壁中的一个孔导向并且在泵腔14中与一个可在该泵腔中运动的活塞15(参见图2)相连接。
具有E形磁轭和绕该E形磁轭的中间的腿缠绕的线圈的两个电磁体各以面对振动体的极靴设置在振动体8与壁段1之间并且用于驱动振动体8的振动运动。
因为与活塞15刚性地连接的活塞杆13在泵腔14的端侧的孔中被导向,所以,即使活塞15在往复运动的方向上的伸展量很小,该活塞也受到保护以免歪斜。活塞15因此占用泵腔14中的少量位置,由此在外部尺寸小的情况下获得大的有效容积。
泵腔14由一个空心室16环状地包围,该空心室通过泵腔14的侧壁中的多个开口17与该泵腔连通并且该空心室通过一个通道18被供应以从泵腔的压力连接端19分流出的压缩的气体。通过开口17进入到泵腔14中的压力气体在侧壁上形成一个垫,活塞15在该垫上基本上无摩擦地滑动。
如图2中所示,在理想情况下传递杆9在振动体8与活塞15之间直线延伸,并且振动体8和活塞15的运动方向精确地平行。在实际中由于制造误差而总是出现与这种理想位型的偏离,可能是:泵腔14不精确地与振动体8对准,或者由于在将膜片弹簧3、4固定在框架和振动体8上时的误差而使振动体8的运动方向不与活塞15的运动方向一致。
图3以类似于图2的视图示出了振动体8与活塞15之间侧向错位的情况。头部区段10的纵向轴线与活塞杆13的纵向轴线平行,但不共线。该偏离通过变细的区段11、12的轻微的弹性弯曲和传递杆9的微小的倾斜状态来吸收。活塞15在泵腔14中往复运动,而无使活塞15压到泵腔14的壁上的值得一提的歪斜转矩或侧向力作用在该活塞上。活塞15与泵腔壁之间的间隙因此可保持很小,由此仅需要少量的气体通流量来支承活塞15并且可获得压缩机的相应高的效率。
图4示出了振动体8和活塞15的运动方向不精确平行定向的情况。这可借助于柔性的变细的区段11、12来补偿,其中,如各通过虚线轮廓示出的那样,传递杆9在其运动的换向点之间不仅进行移动而且进行微小的转动。
变细的区段11、12原则上也可通过球节或万向节替代;但具有变细的区段的实施形式尤其适于微型化并且可成本低廉地制造。

Claims (6)

1.直线压缩机,它具有:一个泵腔(14),活塞(15)可在该泵腔中往复运动;一个与该泵腔(14)固定地连接的框架(1,2),振动体(8)通过至少一个弹簧(4,5)可往复运动地保持在该框架上;至少一个装配在该框架(1,2)上的电磁体,所述电磁体用于驱动该振动体(8)往复运动;以及一个传递杆(9),该传递杆与该振动体(8)相连接,并且通过一个第一挠性件(12)与该活塞(15)相连接,其特征在于:该传递杆(9)与该振动体(8)的连接通过一个第二挠性件(11)形成,所述第一和第二挠性件(11,12)为可弹性弯曲的棒。
2.根据权利要求1所述的直线压缩机,其特征在于:这些挠性件(11,12)各具有两个摆动自由度。
3.根据权利要求2所述的直线压缩机,其特征在于:所述棒与该传递杆(9)构造成一体并且比该传递杆(9)细。
4.根据权利要求3所述的直线压缩机,其特征在于:该传递杆(9)用弹簧材料构成。
5.根据权利要求1至4之一所述的直线压缩机,其特征在于:该活塞(15)在泵腔(14)中被压力气体支承。
6.根据权利要求1至4之一所述的直线压缩机,其特征在于:该传递杆(9)通过所述可弹性弯曲的棒与一个刚性地锚接在该活塞(15)上并且在该泵腔(14)中被导向的活塞杆(13)相连接。
CN2005800442913A 2004-12-23 2005-11-29 直线压缩机 Expired - Fee Related CN101087951B (zh)

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DE102004062300A DE102004062300A1 (de) 2004-12-23 2004-12-23 Linearverdichter
DE102004062300.7 2004-12-23
PCT/EP2005/056297 WO2006069873A1 (de) 2004-12-23 2005-11-29 Linearverdichter

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EP (1) EP1831555B1 (zh)
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DE (1) DE102004062300A1 (zh)
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WO (1) WO2006069873A1 (zh)

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EP1831555A1 (de) 2007-09-12
WO2006069873A1 (de) 2006-07-06
EP1831555B1 (de) 2017-01-11
RU2392495C2 (ru) 2010-06-20
CN101087951A (zh) 2007-12-12
US20080019852A1 (en) 2008-01-24
DE102004062300A1 (de) 2006-07-13
RU2007121770A (ru) 2009-01-27

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