CN1302957A - 压缩机 - Google Patents

压缩机 Download PDF

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CN1302957A
CN1302957A CN01102958A CN01102958A CN1302957A CN 1302957 A CN1302957 A CN 1302957A CN 01102958 A CN01102958 A CN 01102958A CN 01102958 A CN01102958 A CN 01102958A CN 1302957 A CN1302957 A CN 1302957A
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compressor
refrigeration agent
inlet hole
housing
mainframe
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洪尚郁
柳湖善
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LG Electronics Inc
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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
    • F04C23/00Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/008Hermetic pumps
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07FCOIN-FREED OR LIKE APPARATUS
    • G07F11/00Coin-freed apparatus for dispensing, or the like, discrete articles
    • G07F11/02Coin-freed apparatus for dispensing, or the like, discrete articles from non-movable magazines
    • G07F11/34Coin-freed apparatus for dispensing, or the like, discrete articles from non-movable magazines in which the magazines are of zig-zag form
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G11/00Chutes
    • B65G11/20Auxiliary devices, e.g. for deflecting, controlling speed of, or agitating articles or solids
    • B65G11/203Auxiliary devices, e.g. for deflecting, controlling speed of, or agitating articles or solids for articles
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07FCOIN-FREED OR LIKE APPARATUS
    • G07F11/00Coin-freed apparatus for dispensing, or the like, discrete articles
    • G07F11/02Coin-freed apparatus for dispensing, or the like, discrete articles from non-movable magazines
    • G07F11/04Coin-freed apparatus for dispensing, or the like, discrete articles from non-movable magazines in which magazines the articles are stored one vertically above the other
    • G07F11/10Coin-freed apparatus for dispensing, or the like, discrete articles from non-movable magazines in which magazines the articles are stored one vertically above the other two or more magazines having a common delivery chute
    • 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
    • F04C18/02Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0215Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

一种涡旋压缩机包括:具有进口管和出口管的壳体;布置在有进口孔的壳体的上部、具有进口孔的压缩机部分;布置在该壳体的下部的驱动电机部分:和主机架,所述主机架具有毗连挡板布置的边缘,挡板用于将通过进口管流入壳体的制冷剂分成流过压缩机部分的流体流和流过电机部分的流体流,该边缘有延伸到压缩机部分进口孔的弯曲导引表面,以便与挡板一起形成制冷剂流动通道,因此,通过避免额外的压力损失和温度升高而改进压缩机的性能。

Description

压缩机
本发明涉及涡旋压缩机,具体说,本发明涉及涡旋压缩机的制冷剂进口。
通常,涡旋压缩机用于通过一对相对的涡盘压缩气体,由于它的效率高、噪音低、尺寸小和重量轻,因此主要用于室内空调和小轿车中以压缩制冷剂气体。
如图1所示,现有技术的压缩机包括:一压缩机部分10,用于在制冷循环中压缩经过进口管1a从蒸发器(未示出)中抽入壳体1内的制冷剂气体;以及一电机部分20,该电机部分用于将驱动力传送给压缩机部分10以压缩制冷剂。该壳体1包围压缩机部分10和电机部分20,以便在压缩过程中防止制冷剂的泄漏。还有主机架30,该主机架30支承压缩机部分10,以便使能量稳定地从电机部分20传送给压缩机部分10。压缩机部分10具有一安装在壳体1内部上侧的静止涡盘11和一个转动涡盘12,该转动涡盘12与该静止涡盘11啮合并能被电机部分20传送来的驱动力驱动而进行转动。该转动涡盘12可转动地安装在主机架30上,静止涡盘11固定在主机架30上并在该转动涡盘12上面。该静止涡盘11和转动涡盘12具有在垂直方向伸出的渐开线形状的涡卷(lap)11a和12a,以形成压缩机部分10的压缩室13。还有连通于壳体1的内部空间和压缩室13之间的进口40,压缩室3位于涡盘11和12内,用于压缩制冷剂。该电机部分20具有用于由外部能量源产生驱动能的转子21/静子22,即电机和转动轴50。该转动轴50装在转子21的内部,转动涡盘12在该转动轴的顶端,以便使转子21/静子22产生的驱动力通过轴50传送给转动涡盘12。同时,在压缩机部分10的上部中心处还有与压缩室13连通的排出室14,该排出室14又与用于将压缩的制冷剂排出到冷凝器(未示出)中的出口管1b连通。该进口管1a位于壳体1的一侧以接收从蒸发器(未示出)出来的制冷剂,在进口管1a的排出侧有一挡板,以便使制冷剂的流动偏转。在压缩机的工作过程中,制冷剂通过进口管1a进入壳体1内,并且在挡板60处分成向上的和向下的。当该制冷剂流过壳体1内部时,向下的制冷剂冷却电机部分20,向上的制冷剂流动并经过进口40最后进入压缩室13。另一方面,向上的制冷剂向上流到壳体1的上部,然后折转并通过进口40进入压缩室13,该进口40的开口方向基本与制冷剂向上流动的方向成直角。尽管由于电机部分20的加热而使温度升高和因分流而导致压力下降,但是现有技术的压缩机的系统在工作中通过利用制冷剂且不需要任何额外的冷却装置就能基本有效地防止电机部分20过热。除了刚才所说明的以外,实际上,该压缩机在工作过程中还有额外的压力损失和温度升高,下面将详细介绍。
参考图2,现有技术中,制冷剂流至压缩室的流动结构具有连续形成的、包括挡板60和毗连挡板60的主机架30边缘在内的流动通道和毗连主机架30处形成的进口孔40。因此,往上的制冷剂在制冷剂流过流动通道时会产生流动分离,以致流过进口孔40而流入壳体1上部。
参考图3能更清楚地说明该制冷剂的流动情况。由于前面在介绍制冷剂由挡板60和主机架30引导而以垂直方向流动时所述的流道结构的几何形状,所述通过进口管1a进入壳体1内的制冷剂流过进口孔40。因此,制冷剂并不是平稳地流向进口孔40,而是在制冷剂流向壳体1的上面部分后再通过进口孔40进入由涡盘11和12形成的压缩室13中。因此,经过进口40而向上的制冷剂流与在绕电机流过时被加热的制冷剂流相撞,产生湍流,这会导致额外的压力损失。而且,制冷剂在延长的流道中从主机架30吸热,会产生额外的温度升高。这样,因为该额外的压力损失和额外的温度升高阻碍了制冷剂平稳进入进口孔40,导致了制冷剂的过热,从而使总压缩效率降低。
因此,本发明涉及一种压缩机,该压缩机基本避免了由于现有技术的缺点和限制引发的一个或多个问题。
本发明的一个目的是提供一种压缩机,该压缩机能使制冷剂的压力损失和温度升高减至最小,同时使压缩机的各部件平稳冷却。
本发明的另外的特征和优点将由下面的说明书介绍,这些特征和优点的一部分在说明书中清楚的表示出来,或者可以在本发明的实践过程中了解。本发明的目的和其它优点是通过在说明书、权利要求以及附图中特别指出的结构来实现和获得的。
为了获得这些和其它优点,根据本发明目的,具体提供一种涡旋压缩机包括:一壳体,该壳体有用于吸入制冷剂的进口管和用于排出压缩的制冷剂的出口管;一布置在壳体的上部的压缩机部分,其具有用以吸入经进口管流入的制冷剂的进口孔,该压缩机部分用来压缩流过进口孔的制冷剂,该进口孔用于吸入流过进口管的制冷剂;一电机部分,该电机部分布置在该壳体的下部,用于传输驱动力以驱动该压缩机部分;以及一主机架,该主机架具有毗连于挡板布置的边缘,该挡板用于将通过进口管流入壳体的制冷剂分成流过压缩机部分的流体流和流过电机部分的流体流,其边缘具有一延伸到压缩机部分进口孔的弯曲导引表面,以便与挡板一起形成制冷剂流动通道,因此,通过避免额外的压力损失和温度升高而改进压缩机的性能。
优选是,该导引表面的曲率半径大致等于从主机架边缘到进口孔之间的距离。
应当知道,前面的总体说明和后面的详细说明都是示例和解释性的,都是为了更好地解释本发明的权利要求。
附图是为了更好地理解本发明,它包含在说明书中并构成说明书的一部分,本发明的图示实施例与说明书一起来解释本发明的原理。
附图中:
图1所示为现有技术涡旋压缩机的纵剖图;
图2所示为图1中“A”部分的放大图;
图3示意表示了制冷剂环绕现有技术涡旋压缩机的进口的流动情况;
图4所示为本发明实施例的涡旋压缩机的纵剖图;
图5所示为图4中“B”部分的放大图;以及
图6示意表示了制冷剂环绕本发明涡旋压缩机的进口的流动情况;
下面将详细介绍本发明的优选实施例,该实施例如附图所示。在本发明的说明中,相同的部件将给出相同的名称和参考标号,对它们的说明将省略。图4所示为本发明优选实施例的涡旋压缩机的纵剖图,图5所示为图4中“B”部分的放大图。
参考图5,本发明优选实施例的涡旋压缩机包括:用于压缩制冷剂气体的压缩机部分10、将驱动力传输给压缩机部分10的电机部分20、用于容纳该压缩机部分10和电机部分20的壳体1以及支承该压缩机部分10的主机架130。因为除了上述部件之外的系统与现有技术压缩机相同,因此省略对它们的详细说明。
其中,参考图5,本发明的压缩机的流道结构包括连续形成的、包括挡板160和毗连挡板60的主机架130边缘在内的流动通道和毗连主机架130的边缘形成的进口孔40a。在本发明的流道结构中,主机架130的边缘具有弯曲导引表面131。也就是,主机架130的边缘是与进口孔40a连续的弯曲表面,这样,在挡板160处向上偏转的制冷剂由导引表面131导引流动直到制冷剂直接进入进口孔40中。这时,优选是主机架130的弯曲表面的曲率半径‘r’,即主机架130的导引表面131的曲率半径‘r’设置成基本等于从主机架130到进口孔40a的距离‘h’,以便使制冷剂的流的分离最小。
本发明压缩机的工作将参考图4~6介绍。
经过进口管而从蒸发器(未示出)进入壳体1内的制冷剂通过与涡盘11、12连通的进口孔40a流入涡盘11、12之间的各压缩室13。这时,转动涡盘12随与转动涡盘12连接的转动轴50的转动而转动,而各涡盘11和12的保持密封接触的涡卷11a、12a在涡盘11和12内压缩制冷剂。压缩的制冷剂经过静止涡盘11内的出口孔11b排出排出室14,并通过出口管1b从该排出室14排出到冷凝器(未示出)中。然后,压缩的制冷剂供给冷凝器,同时前述的吸入、压缩排出过程顺序重复进行。
这时,如图6所示,通过进口管1a进入壳体1的制冷剂分成向上的制冷剂流和向下的制冷剂流,其中向上的制冷剂流沿导引表面131前进并直接进入进口孔40a。这是由于液体有沿壁面流动,尤其是附着弯曲表面流动的特性,即附壁效应(coanda effect)。本发明利用附壁效应改进本发明的制冷剂流道结构。
因此,在挡板160处分离成的向上的制冷剂流沿导引表面131流动并直接进入进口孔40a,即经过进口孔40的向上制冷剂流急剧减少,从而防止产生多余的流向壳体1上部的向上制冷剂流动。而且,平稳的向上制冷剂流使得向下的制冷剂流平稳返回进口孔40而不会产生冷却电机后的干扰状态。而且,平稳直接地进入进口孔40a的制冷剂流能防止从主机架130中吸收额外的热量。下面的表格是根据本发明而获得的制冷剂流的分析结果。
    现有技术     本发明
    ΔT(℃)     13.8     10.8
    ΔP损失(Pa)     288     69.8
其中,ΔT表示进入壳体1的制冷剂的温度差,ΔP损失表示制冷剂流过壳体1的压力损失。如表1所示,与现有技术的主机架30相比,本发明的主机架130能够减少总压力损失的大约75%,减少制冷剂温度差大约3℃。实际上,该压力损失和温度升高的减少提高了压缩机总容积效率的大约1%,从而提高了压缩性能。
因此,本发明的压缩机有如下优点。
在主机架的边缘形成弯曲导引表面能够使制冷剂平稳流入进口,从而减少从主机架吸收的热量。因此,即使在压缩机的部件被充分冷却时,防止制冷剂的额外压力损失和温度升高也能够使制冷剂的压力损失和温度升高减至最小,从而提高了压缩机的性能。
本领域的技术人员应当知道,在不脱离本发明的精神和范围的情况下,可以对本发明的压缩机进行各种变化和改变。因此,本发明应当覆盖了在附加权利要求和它们的等价物的范围之内的本发明的变化和改进。

Claims (2)

1.一种压缩机包括:
壳体,所述壳体具有用于吸入制冷剂的进口管和用于排出压缩的制冷剂的出口管;
压缩机部分,所述压缩机部分布置在壳体的上部,具有用于吸入经过进口管流入的制冷剂的进口孔,用于压缩流过该进口孔的制冷剂;
电机部分,所述电机部分布置在壳体的下部,用于传输驱动力以驱动所述压缩机部分;和
主机架,所述主机架有毗连挡板布置的边缘,所述挡板用于将经过进口管流入壳体的制冷剂分成流过压缩机部分的流体流和流过电机部分的流体流,所述边缘有延伸到压缩机部分的进口孔的弯曲导引表面,以便与挡板一起形成制冷剂流动通道。
2.根据权利要求1所述的压缩机,其特征在于,所述导引表面的曲率半径等于从主机架边缘到进口孔之间的距离。
CN01102958A 2000-01-04 2001-01-04 压缩机 Pending CN1302957A (zh)

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CN100383388C (zh) * 2003-07-30 2008-04-23 株式会社神户制钢所 压缩机

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KR20010068323A (ko) 2001-07-23
US20010006603A1 (en) 2001-07-05

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