CN100371599C - 带有正切流导向尖端的螺旋压缩机排出口 - Google Patents

带有正切流导向尖端的螺旋压缩机排出口 Download PDF

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CN100371599C
CN100371599C CNB038203456A CN03820345A CN100371599C CN 100371599 C CN100371599 C CN 100371599C CN B038203456 A CNB038203456 A CN B038203456A CN 03820345 A CN03820345 A CN 03820345A CN 100371599 C CN100371599 C CN 100371599C
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flow
exhaust port
axial
radial
tangent
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CN1678831A (zh
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W·H·鲁索
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Carrier Corp
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Carrier Corp
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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
    • F04C29/00Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • 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
    • F04C18/08Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/082Details specially related to intermeshing engagement type pumps
    • F04C18/086Carter
    • 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
    • F04C18/08Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/16Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • 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
    • F04C2250/00Geometry
    • F04C2250/10Geometry of the inlet or outlet
    • F04C2250/102Geometry of the inlet or outlet of the outlet

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

Abstract

一种螺旋压缩机包括:一壳体,其有一排出口;至少两个转子,其可转动地安装在壳体内,用来在径向和轴向方向上产生相对的排出流;和一正切流导向尖端,其安装在排出口,至少部分限定了排出口的径向流部分,且其具有流导向表面,用来引导来自所述转子的正切流,从而提供径向流和轴向流中的至少一个,其中,所述导流表面包含径向导流面,它们会聚以形成离开所述转子的尖端点,还包含轴向导流面,它们会聚以形成朝向所述转子的尖端点。

Description

带有正切流导向尖端的螺旋压缩机排出口
技术领域
本发明涉及一种螺旋压缩机,尤其涉及一种具有增强排出效率的螺旋压缩机,其中动能可转换成压力。
背景技术
典型的螺旋压缩机当制冷剂通过旋转的螺杆时对制冷剂增压,也传递动能给制冷剂。然而,这种动能往往在排出过程中浪费掉了。
在螺旋压缩机技术中,传统的解决方法包括优化排出口区域来降低排出动能,和/或降低转子转速来降低动能。
显然需要提高压缩机的效率。
发明内容
因此本发明的主要目的是提供动能向压力的转换,由此降低压缩机所需要做的功,提高效率。
本发明的另一目的是提供流向矢量的重新定向,以避免相对的流的干扰和/或抵消。
本发明的其他目的和优点将在下文描述。
依照本发明,前述的目的和优点容易地得以实现。
依照本发明,提供一种螺旋压缩机,其包括带有排出口的壳体;至少两个转子,两个转子可转动地安装在所述壳体内,用来在径向和轴向方向产生相对的排出流;和一正切流导向尖端,其设置在所述排出口,至少部分限定了所述排出口的径向流部分,且其具有导流表面,用来引导来自所述转子的正切流,以此提供径向流和轴向流中的至少一个,其中,所述导流表面包含径向导流面,它们会聚以形成离开所述转子的尖端点,还包含轴向导流面,它们会聚以形成朝向所述转子的尖端点。
附图说明
图1是一种依照本发明具有增强排出口的螺旋压缩机的部分示意图;和
图2是图1实施例的侧视示意图。
具体实施方式
参考相应的附图,本发明优选实施例的详细描述如下,其中:
本发明涉及一种螺旋压缩机,尤其是涉及改进的排出口,用来把压缩机排出流的动能转换为压力,从而提高压缩机效率,降低压缩机为同等压力所需要做的功。
传统压缩机排出结构的其中一个流动机理是,螺旋压缩机的螺杆产生一对相对的正切向量,这些向量在端壁上最大,朝着径向排出口的进口端方向减小。这些正切分量趋向于相互抵消并收缩流动,因此引起明显的压力损失。本发明涉及一种导流尖端,其与压缩机排出口结合,并且对这些向量径向和/或轴向重新定向,从而降低这些负面影响,使压缩机高效率运行。
图1是压缩机10的部分示意图,压缩机10包括第一转子12和第二转子14,所述两个转子在壳体11内旋转,产生方向上不相互平行的排出流16、18,所述排出流16、18相对于转子和转子壳体在方向上有径向、正切和轴向分量。取决于转子的旋转速度或圆周速度,大部分动能会传递给制冷剂,这通常由于湍流造成损失,因此动能减到最小。然而依照本发明,提供一种排出口,其能降低损失,从而提高压缩机效率,以及改变这通常被看作缺陷的方面。
依照本发明,在压缩机壳体11上设有一排出口20,其有径向部分22和轴向部分24,一正切流导向尖端26优选地安装在排出口20中,以此来引导排出流16、18平稳流入出口、管道或扩散器,从而提高流动效率,把流体的一些动能转换成压力。
此外,依照本发明,排出口20的轴向部分24大体上与正切流导向尖端26对齐。当转子12、14相对于排出口20的径向部分22和轴向部分24旋转时,径向部分22和轴向部分24依次打开和关闭,使得流体首先穿过径向部分22,然后穿过轴向部分24。
依照本发明,优选地,正切流导向尖端26由两个拱形的或弯曲的表面28、30组成,所述表面28、30分别朝向来自转子12、14的排出流16、18,且曲面28、30对应于流16、18向外弯曲。这有利于流向的稳定和重新定向,或是有利于压缩制冷剂的进一步输送,这些流主要从离开转子12、14的正切方向进入扩散器或其它类似元件。图1进一步简要显示了为接收和扩散排出流16、18的径向流和轴向流的扩散器36。
此外,依照本发明,也如图1所示,正切流导向尖端26还具有附加的弧32、34,弧32、34延伸至轴向排出口的轴向排出区域,有利于从轴向口到轴向方向和/或径向方向的正切流的重新定向。弧32、34最好平行于容纳转子12、14的壳体的弧,最好包括朝向转子12、14的凹面,在该凹面引导轴向流。
参见图2,进一步显示了图1实施例的侧视示意图,其中,压缩机10包括转子12、14和导流尖端26,导流尖端26正如所希望的对流向进行引导。
依照本发明,容易理解,对螺旋压缩机排出口做了改进,这种改进有利于把压缩机传递的部分动能转换成压力,从而提高压缩机效率,使压缩机能够以较少量的功达到所希望的压力。
这会使压缩机较小,装置价格降低,工作效率提高,还具有其它所希望的优点。
可以理解,本发明不局限于在这里显示和描述的例子,这仅仅是实施本发明的最佳方式,允许运行细节和部件的形式、尺寸和排列的改变。本发明更确切地旨在所有包含在权利要求所限定的精神和范围内的改进。

Claims (4)

1.一种螺旋压缩机,包括:
一壳体,其设有一排出口;
至少两个转子,其可转动地安装在所述壳体内,用来在径向和轴向方向上产生相对的排出流;和
一正切流导向尖端,其设置在所述排出口,至少部分限定了所述排出口的径向流部分,且其具有导流表面,用来引导来自所述转子的正切流,从而提供径向流和轴向流中的至少一个,其中,所述导流表面包含径向导流面,它们会聚以形成离开所述转子的尖端点,还包含轴向导流面,它们会聚以形成朝向所述转子的尖端点。
2.如权利要求1所述的装置,其特征在于,还包括一扩散器,其与所述排出口连通,用来接收所述径向流和轴向流中的至少一个。
3.如权利要求1所述的装置,其特征在于,其中所述正切流导向尖端还包括附加的导流表面,用来引导所述排出口的轴向流部分的正切流,以此提供径向流和轴向流中的至少一个穿过所述轴向流部分。
4.如权利要求1所述的装置,其特征在于,其中所述导流表面由朝向所述至少两个转子的凹面组成。
CNB038203456A 2002-08-27 2003-07-31 带有正切流导向尖端的螺旋压缩机排出口 Expired - Fee Related CN100371599C (zh)

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Application Number Priority Date Filing Date Title
US10/231,404 US6786710B2 (en) 2002-08-27 2002-08-27 Discharge porting for screw compressor with tangential flow guide cusp
US10/231,404 2002-08-27

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EP (1) EP1534958B1 (zh)
JP (1) JP2005537422A (zh)
KR (1) KR100682424B1 (zh)
CN (1) CN100371599C (zh)
BR (1) BR0313848A (zh)
CA (1) CA2497055C (zh)
TW (1) TWI262247B (zh)
WO (1) WO2004020832A1 (zh)

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US7667332B2 (en) * 2004-11-05 2010-02-23 Kabushiki Kaisha Toshiba Method for generating pattern, method for manufacturing semiconductor device, semiconductor device, and computer program product
KR101361277B1 (ko) 2007-06-01 2014-02-11 한라비스테온공조 주식회사 공기 압축기 또는 공기 팽창기
US7845921B2 (en) * 2008-03-14 2010-12-07 Gm Global Technology Operations, Inc. Supercharger with outlet bars for rotor tip seal support
JP5180709B2 (ja) * 2008-07-10 2013-04-10 株式会社神戸製鋼所 スクリュ圧縮機
US10941770B2 (en) 2010-07-20 2021-03-09 Trane International Inc. Variable capacity screw compressor and method
CN102817844B (zh) * 2012-09-14 2015-09-09 上海齐耀螺杆机械有限公司 一种螺杆压缩机
CN105593523B (zh) * 2013-10-11 2019-11-08 特灵国际有限公司 螺杆压缩机的排放端口
CN106762626A (zh) * 2016-12-28 2017-05-31 扬州大学 一种倒八字型对称入流双吸螺杆水泵及其平顺水流和阻止回流的方法
CN106762625A (zh) * 2016-12-28 2017-05-31 扬州大学 一种人字型入流双吸双螺杆水泵及其平顺水流和阻止振动的方法

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US2620968A (en) * 1945-11-03 1952-12-09 Jarvis C Marble Machine of the screw-compressor type
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US2463080A (en) * 1945-02-17 1949-03-01 Schwitzer Cummins Company Interengaging impeller fluid pump
US2620968A (en) * 1945-11-03 1952-12-09 Jarvis C Marble Machine of the screw-compressor type
US3088658A (en) * 1959-06-04 1963-05-07 Svenska Rotor Maskiner Ab Angularly adjustable slides for screw rotor machines
US4588363A (en) * 1984-03-28 1986-05-13 Societe Anonyme D.B.A. Volumetric screw compressor
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CA2497055C (en) 2008-09-30
CN1678831A (zh) 2005-10-05
BR0313848A (pt) 2005-07-19
TWI262247B (en) 2006-09-21
US20040042921A1 (en) 2004-03-04
WO2004020832A1 (en) 2004-03-11
KR20050059085A (ko) 2005-06-17
JP2005537422A (ja) 2005-12-08
EP1534958B1 (en) 2011-09-14
KR100682424B1 (ko) 2007-02-15
CA2497055A1 (en) 2004-03-11
US6786710B2 (en) 2004-09-07
TW200413643A (en) 2004-08-01
EP1534958A1 (en) 2005-06-01

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