CN101002024A - 用于单叶片真空泵的叶片 - Google Patents

用于单叶片真空泵的叶片 Download PDF

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CN101002024A
CN101002024A CNA2005800271619A CN200580027161A CN101002024A CN 101002024 A CN101002024 A CN 101002024A CN A2005800271619 A CNA2005800271619 A CN A2005800271619A CN 200580027161 A CN200580027161 A CN 200580027161A CN 101002024 A CN101002024 A CN 101002024A
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blade
wall
diagonal
vacuum pump
rotor
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维利·施奈德
马丁·托马
弗里德黑尔姆·普菲策尔
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Joma Hydromechanic GmbH
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-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
    • F04C18/34—Rotary-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
    • F04C18/344—Rotary-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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-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
    • F04C18/34—Rotary-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
    • F04C18/344—Rotary-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
    • F04C18/3441—Rotary-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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08—Rotary pistons
    • F01C21/0809—Construction of vanes or vane holders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2220/00—Application
    • F04C2220/10—Vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00—Manufacture
    • F04C2230/20—Manufacture essentially without removing material
    • F04C2230/22—Manufacture essentially without removing material by sintering
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/20—Rotors

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

Abstract

本发明涉及一种用于单叶片真空泵的叶片(20)，该单叶片真空泵具有杯形的外壳(12)并且设有可偏心转动地安装在外壳(12)中的转子(18)，其中所述叶片(20)垂直于转动轴(21)可移动地安装在转子(18)中并且通过它的自由端(36)贴靠在外壳(12)的内圆周表面(34)上，其中，叶片(20)沿内圆周表面(34)的方向具有封闭的表面并且所述表面由外壁(32)构成，并且叶片(20)的芯具有被外壁(32)包围的框架结构(38)。

Description

用于单叶片真空泵的叶片
技术领域
本发明涉及一种用于单叶片真空泵的叶片，该单叶片真空泵具有杯形的外壳并且设有可偏心转动地安装在外壳中的转子，其中所述叶片垂直于转动轴可移动地安装在转子中并且通过它的自由端贴靠在外壳的内圆周表面上。
背景技术
已知具有这样结构的真空泵。它通常具有由金属制成的外壳，转子可转动地安装在该外壳中并且工作空间构成在该外壳中。例如汽车的马达驱动转子。转子由金属制成并且特别地由烧结硬质合金制成同样是已知的。由于转子较大的重量，该转子具有较大的惯性转矩，从而真空泵的耗用功率是令人讨厌地高。此外该叶片由实心材料制成，从而惯性转矩继续被提高。
发明内容
因此本发明的任务在于，提供一种真空泵，特别是具有较小的耗用功率的单叶片真空泵。
根据本发明该任务通过开头所述类型的单叶片真空泵的叶片以下面的方式解决，即叶片沿内圆周表面的方向具有封闭的表面并且所述表面由外壁构成，并且叶片的芯具有被外壁包围的框架结构。
通过叶片根据本发明的设计或者如下主要的优点，即在基本上不影响抗挠刚度的情况下，减小叶片的重量。框架结构具有如下优点，即以简单的方式加固叶片，所以该叶片能够毫无问题地吸收和支持在泵过程中产生的弯曲力。
在一个实施例中提出，所述框架结构一直延伸到叶片的自由端。因此非常显著地减小叶片的惯性转矩，所以需要很小的力用于加速和减速。
在一个扩展方案中提出，所述框架结构有对角线壁，该对角线壁终结于外壁。在这种情况下对角线壁相对于外壁构成一定角度，该角度从各种应用情况中对于最大的负载情况确定。有利地对角线壁相对于外壁形成45°的角。该叶片的设计提供如下的主要优点，即所有弯曲力的大部分最好被反作用。因此，叶片几乎不变形，该叶片以较小的间隙引导在该转子中，从而由于减小漏气而提高泵的效率。甚至可能借助于密封元件完全放弃分开的密封。
通过最大的两个对角线壁相遇在框架节点处，可以得到叶片较简单的结构。因此特别在注塑的叶片中避免在框架节点中的材料聚集。
有利的是，所述叶片除了对角线之外是中空的。该中空空间同样用于接收油状的润滑介质，所以该油同样能够持久地用于密封的目的。
在一个特别有利的实施例中提出，叶片的纵轴中设有隔板，该隔板垂直于外壁延伸。该隔板仅略微增加叶片总的重量，因为它具有相对小的尺寸。当时它提高了叶片的抗扰刚度。
为了实现在隔板的两侧之间的压力平衡，该隔板设有通孔。该通孔能够设计得相当小并且此外具有如下优点，即润滑介质从隔板的一侧能够到达隔板的另一侧。
此外有利的是，所述隔板、所述外壁和所述对角线壁构成横截面为大致三角形的盲孔。这样的结构是相当的刚性的，但同样是容易制造的。
从从属权利要求以及其中参考附图详细地描述了一个特别优选的实施例的下列描述中可以得出本发明的其他优点、特征和详情。所以在附图中示出的以及在说明书和从属权利要求中所述的特征根据本发明的 本质可以是单独的或者以任意方式组合。
附图说明
在附图中示出：
图1示出真空泵的分解图；
图2示出叶片的透视图；以及
图3示出叶片部分剖切的透视图。
具体实施方式
在图1中用附图标记10表示整个真空泵，其中示出没有外壳盖的外壳12。该外壳12具有通向内腔16中的吸入接口14。在该内腔16中设有整体用18表示的转子，叶片20垂直于旋转轴21可移动地安装在该转子中。转子18由两部分组成并且具有转子轴22和转子外壳24。转子轴22贯穿接合外壳12，特别是通过传动开口28贯穿接合内腔18的底部26并且长方形的段30在背面从外壳12中突出，通过该长方形段(借助于未示出的驱动器)使该转子轴转动。传动开口28设有合适的密封剂，以致于润滑剂不能从离开内腔16并且空气和/或污物不能进入到内腔16中。
在图2和3中详细描述的叶片20具有外壁32，该外壁朝向内腔16的内圆周表面34。在这种情况下叶片20通过它的自由端36贴靠在该内圆周表面34上。该外壁32是封闭的，也就是说在相对的侧面上没有构成主要的缺口并且包围框架结构38，该框架结构构成叶片20的芯。该框架结构38具有多个对角线壁40，每两个对角线壁相交于框架节点42。在这种情况下对角线壁40和外壁32构成45°的角度44。
从图2中可以明显地看出，对角线壁40设置成W形。外壁32和每两个对角线壁40包围一个大致三角形的开口46。该开口46能是贯穿的或者如在图3中所示被隔板48中断。该隔板48沿着叶片20的纵轴50的方向延伸并且本身具有通孔52，该通孔将两个开口46互相连接。开口46也可以是轻的圆锥形的，所以该叶片能够毫无问题地从压铸模中取出。
权利要求书(按照条约第19条的修改)
1.一种用于单叶片真空泵(10)的叶片(20)，该单叶片真空泵具有杯形的外壳(12)并且设有可偏心转动地安装在外壳(12)中的转子(18)，其中所述叶片(20)垂直于转动轴(21)可移动地安装在转子(18)中并且通过它的自由端(36)贴靠在外壳(12)的内圆周表面(34)上，其中所述叶片(20)至少在突出转子(18)的段中沿内圆周表面(34)的方向具有封闭的表面并且所述表面由外壁(32)构成，其特征在于，叶片(20)的芯具有被外壁(32)包围的框架结构(38)，所述框架结构(38)一直延伸到叶片(20)的自由端(36)。
2.如权利要求1所述的叶片，其特征在于，所述框架结构(38)具有对角线壁(40)，该对角线壁终结于外壁(32)。
3.如权利要求2所述的叶片，其特征在于，所述对角线壁(40)相对于外壁(32)构成35°至55°的角度(44)，特别构成45°的角度。
4.如前述权利要求中任一项所述的叶片，其特征在于，最大的两个对角线壁(40)相交于框架节点(42)。
5.如前述权利要求中任一项所述的叶片，其特征在于，所述对角线壁(40)设置成W形。
6.如前述权利要求中任一项所述的叶片，其特征在于，所述叶片(20)除了对角线壁(40)之外是中空的。
7.如权利要求1到5中任一项所述的叶片，其特征在于，在叶片(20)的纵轴(50)中设有隔板(48)，该隔板垂直于外壁(32)延伸。
8.如权利要求7所述的叶片，其特征在于，所述隔板(48)设有通孔(52)。
9.如权利要求7或8所述的叶片，其特征在于，所述隔板(48)、所述外壁(32)和所述对角线壁(40)构成横截面为大致三角形的盲孔。
10.一种具有如前述权利要求中任一项所述的叶片的单叶片真空泵。

Claims (11)

1.一种用于单叶片真空泵(10)的叶片(20)，该单叶片真空泵具有杯形的外壳(12)并且设有可偏心转动地安装在外壳(12)中的转子(18)，其中所述叶片(20)垂直于转动轴(21)可移动地安装在转子(18)中并且通过它的自由端(36)贴靠在外壳(12)的内圆周表面(34)上，其特征在于，叶片(20)至少在突出转子(18)的段中沿内圆周表面(34)的方向具有封闭的表面并且所述表面由外壁(32)构成，并且叶片(20)的芯具有被外壁(32)包围的框架结构(38)。
2.如权利要求1所述的叶片，其特征在于，所述框架结构(38)一直延伸到叶片(20)的自由端(36)。
3.如前述权利要求中任一项所述的叶片，其特征在于，所述框架结构(38)具有对角线壁(40)，该对角线壁终结于外壁(32)。
4.如权利要求3所述的叶片，其特征在于，所述对角线壁(40)相对于外壁(32)构成35°至55°的角度(44)，特别构成45°的角度。
5.如前述权利要求中任一项所述的叶片，其特征在于，最大的两个对角线壁(40)相交于框架节点(42)。
6.如前述权利要求中任一项所述的叶片，其特征在于，所述对角线壁(40)设置成W形。
7.如前述权利要求中任一项所述的叶片，其特征在于，所述叶片(20)除了对角线壁(40)之外是中空的。
8.如权利要求1到6中任一项所述的叶片，其特征在于，在叶片(20)的纵轴(50)中设有隔板(48)，该隔板垂直于外壁(32)延伸。
9.如权利要求8所述的叶片，其特征在于，所述隔板(48)设有通孔(52)。
10.如权利要求8或9所述的叶片，其特征在于，所述隔板(48)、所述外壁(32)和所述对角线壁(40)构成横截面为大致三角形的盲孔。
11.一种具有如前述权利要求中任一项所述的叶片的单叶片真空泵。
CNA2005800271619A 2004-07-09 2005-06-30 用于单叶片真空泵的叶片 Pending CN101002024A (zh)

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DE102004034925A DE102004034925B3 (de) 2004-07-09 2004-07-09 Einflügelvakuumpumpe

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KR101225346B1 (ko) 2013-01-23
KR20070034092A (ko) 2007-03-27
DE102004034925B3 (de) 2006-02-16
KR101131741B1 (ko) 2012-04-05
WO2006005380A1 (de) 2006-01-19
DE502005002006D1 (de) 2007-12-27
EP1766242B1 (de) 2008-02-13
CN101010514A (zh) 2007-08-01
EP1766240B1 (de) 2007-11-14
DE502005002846D1 (de) 2008-03-27
EP1766240A1 (de) 2007-03-28
CA2575775A1 (en) 2006-01-19
EP1766242A1 (de) 2007-03-28
CN100529405C (zh) 2009-08-19
CA2575890A1 (en) 2006-01-19
WO2006005445A1 (de) 2006-01-19

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