CN102216622A - 真空泵 - Google Patents

真空泵 Download PDF

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CN102216622A
CN102216622A CN2009801461106A CN200980146110A CN102216622A CN 102216622 A CN102216622 A CN 102216622A CN 2009801461106 A CN2009801461106 A CN 2009801461106A CN 200980146110 A CN200980146110 A CN 200980146110A CN 102216622 A CN102216622 A CN 102216622A
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vacuum pump
housing bottom
housing
valve
section
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贝恩德·赫斯
维利·施耐德
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Joma Polytec Kunststofftechnik GmbH
Joma Hydromechanic GmbH
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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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
    • F04C29/126—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • F16K15/148—Check valves with flexible valve members the closure elements being fixed in their centre
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0209—Check valves or pivoted valves
    • 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
    • F04C18/3442—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 the surfaces of the inner and outer member, forming the inlet and outlet opening
    • 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

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

Abstract

本发明涉及一种真空泵，尤其是一种叶片泵，具有：壳体，在所述壳体中设置有抽吸室；以及汇入抽吸室的壳体穿通部，其中在壳体穿通部中设置有通向外部或者外部负压室的吸入止回阀，该吸入止回阀安置在罐状壳体中并且罐状壳体具有壳体底部和壳体外壳，其中壳体底部和壳体外壳一体式地构建。

Description

真空泵
本发明涉及一种真空泵，尤其是涉及一种叶片泵，其具有：泵壳体，在该泵壳体中设置有抽吸室；以及汇入抽吸室的泵壳体穿通部，其中在泵壳体穿通部中设置有通入外部或者外部负压室的吸入止回阀，该吸入止回阀安置在罐状的阀壳体中并且罐状的阀壳体具有壳体底部和壳体外壳。
在WO 2008/00925 A1中公开了一种具有这种结构的真空泵。借助该真空泵从负压室例如制动助力器中吸取空气，其中在真空泵内的抽吸室由叶片形成。为了防止回流，真空泵配备有吸入止回阀，该吸入止回阀设置在泵壳体穿通部中。该吸入止回阀套管状地构建并且具有罐状的阀壳体，该阀壳体带有壳体外壳和壳体底部，其壳体底部放置到真空泵的泵壳体中。例如，负压管推移到吸入止回阀的从真空泵的泵壳体中伸出的自由端上。在泵壳体穿通部中的吸入止回阀的密封例如借助密封元件例如O形环来进行。在上述已知的真空泵中，保持体放置到吸入止回阀的壳体外壳中，该保持体用于保持阀体。
视为不利的是，吸入止回阀、尤其是其阀壳体多件式地构建，并且阀体固定在独立的部件即保持体上。由此难以使安装快速且简单、尤其是难以使安装自动化。
因此，本发明的任务在于提供一种真空泵，尤其是一种吸入止回阀，该真空泵或者吸入止回阀具有简化的结构。
根据本发明，该任务借助开头所述类型的真空泵通过以下方式来解决：吸入止回阀的壳体底部和壳体外壳一体式地构建。
于是，本发明涉及一种真空泵或者一种吸入止回阀，其中壳体底部并不作为独立的部件、尤其是并不作为阀体的保持体构建，而是与壳体外壳一体式地相连。一方面，在安装时壳体底部不再必须位置正确地放置到壳体外壳中，另一方面，一体式地模制在壳体外壳上的壳体底部形成用于限定阀体的保持元件，使得该阀体可以占据限定的并且精确的位置。不同于现有技术，不再必须由阀体将保持体保持就位。自动化的简单安装因此毫无问题地是可能的，因为吸入止回阀的阀壳体只须装备有阀体，即只须阀体放置阀壳体中。
为了精确定位阀体，阀壳体的壳体底部具有用于阀体的保持区段的容纳部。阀体的保持区段固定在容纳部上，使得阀体可靠地靠置在壳体底部上，并且由此保证了阀体可以完全封闭处于壳体底部中的阀开口或者可以在吸入运行期间开启阀开口。
在一个优选的实施形式中，容纳部构建为穿通部。在此，容纳部可以完全穿通壳体底部，这具有的优点是，容纳部可以相对简单地例如以孔的形式来制造。此外，由此也可以使安装容易，因为保持区段只须放置或者插入到容纳部中。
一个比较简单且因此优选的变形方案设计为，容纳部具有空心柱体的、尤其是圆柱体的横截面。容纳部例如由孔或者冲制部来形成，在其中放置或者插入有栓塞状的或者突起状的保持区段，该保持区段同样具有柱体形的横截面。栓塞在容纳部中并不进行卡锁。
由于容纳部根据本发明无底切地(hinterschneidungsfrei)构建，所以可以实现自动化的简单安装，而不必在容纳部与阀体之间建立搭扣连接或者卡锁。
优选地，阀体由弹性的、尤其是橡胶弹性的材料构成，使得其可以完全紧贴壳体底部中的开口并且将其密封。也可能的是，阀体由弹簧钢制造，必要时具有作为密封元件的涂层。
在一个改进方案中设计的是，罐状的阀壳体的底部具有延续壳体外壳超过壳体底部的边缘，并且保持片挤入从壳体底部突出的边缘形成的中间空间中。同样被开口穿通的保持片形成保护元件，其将阀元件牢固保持在壳体底部上。保持片的安装仅仅通过如下方式来实现：将保持片挤入由边缘围绕的中间空间中并且由此防丢失地保持。保持片尺寸略微过大并且通过挤入而形变并且夹紧在中间空间中。
阀元件设置在壳体底部和保持片之间并且被保持片牢固地保持在壳体底部上。在此，保持片将保持区段压入壳体底部的容纳部中并且由此固定阀元件。
本发明的其他优点、特征和细节从从属权利要求以及以下的描述中得到，其中参照附图详细地描述了一个特别优选的实施例。在此，在附图中所示的以及在说明书中和在权利要求中所提及的特征分别本身单独地或者任意组合地反映本发明的实质。
在附图中：
图1示出了通过吸入止回阀的根据图3的纵剖面I-I，该吸入止回阀置于示意性示出的真空泵的壳体中；
图2示出了根据图1的阀的侧视图；
图3示出了根据图2的在箭头III的方向上的视图；以及
图4示出了根据图2的在箭头IV的方向上的视图。
图1示意性地示出了总体上用10表示的真空泵12的泵壳体的区段，其中用14表示抽吸室16的内环周面。泵壳体穿通部20的通道18通入该抽吸室16中，该通道通出至外部22。吸入止回阀24置入泵壳体穿通部20中，吸入管(未示出)可以推移到该吸入止回阀的自由端部26上。在纵截面中示出的吸入止回阀24具有阀壳体28，该阀壳体罐状地构建并且主要由壳体外壳30和壳体底部32形成。壳体外壳30超过壳体底部32延伸至边缘34中，该边缘在壳体底部32对置的侧上伸出壳体底部32。为了将吸入止回阀24流体密封地容纳在泵壳体穿通部20中，阀壳体28设置有环周槽36，密封环38尤其是O形环置入该环周槽中。
也可在图3中看到的壳体底部32设置有穿通部40，其允许空气朝着抽吸室16的方向通流。穿通部40在壳体底部32的朝着抽吸室16的侧上被弹性阀体42遮盖，使得在阀体42升起并且穿通部40开启时，空气只能朝着抽吸室16的方向流动。阀体42旋转对称地构建并且具有遮盖穿通部40的基本上锥体状的拱顶44，该拱顶设置在中央的保持区段46上，在所示的实施例中设置在栓塞47上。栓塞47穿透壳体底部32中的容纳部48，其中容纳部48构建为圆柱形的孔。容纳部48以及栓塞47无底切地构建，使得栓塞47可以毫无问题地插入容纳部48并且又可以从其中拉出。
保持元件、尤其是保持片50用于将阀体42、尤其是将栓塞47在容纳部48中位置固定，该保持片挤入被边缘34围绕的中间空间中。保持片50的尺寸于是相对于由边缘34包围的中间空间的环周略微过大。保持片50同样具有穿通部52，其在图4中可看到，空气可以通过穿通部朝着抽吸室16的方向被吸取。为了精确地将阀体42固定在壳体底部32上，将保持片50挤入得深到使得其中部区域迎着栓塞47靠置在阀体42上并且由此将栓塞47保持在容纳部48中。在略微锥形的壳体底部42和保持片50之间存在足够大的自由空间，当在吸入空气的情况下拱顶44从穿通部40升起时，拱顶44可以偏移至该自由空间中。
带有单件式的壳体外壳30和壳体底部32的阀壳体28的一体式构型允许快速且简单地安装阀体42，阀体与壳体底部32并不卡锁而是仅仅由保持片50保持在壳体底部32上。

Claims (12)

1.一种真空泵(12)，尤其是叶片泵，具有：泵壳体(10)，在所述泵壳体中设置有抽吸室(16)；以及汇入所述抽吸室(16)的壳体穿通部(20)，其中在泵壳体穿通部(20)中设置有通向外部(22)或者外部负压室的吸入止回阀(24)，所述吸入止回阀安置在罐状的阀壳体(28)中，并且所述罐状阀壳体(28)具有壳体底部(32)和壳体外壳(30)，其特征在于，所述壳体底部(32)和所述壳体外壳(30)一体式地构建。
2.根据权利要求1所述的真空泵，其特征在于，所述壳体底部(32)具有用于阀体(42)的保持区段的(46)的容纳部(48)。
3.根据权利要求2所述的真空泵，其特征在于，所述容纳部(48)构建为穿通部。
4.根据权利要求2或3所述的真空泵，其特征在于，所述容纳部(48)完全穿通壳体底部(32)。
5.根据权利要求2至4之一所述的真空泵，其特征在于，所述容纳部(48)具有空心柱体的、尤其是圆柱体的横截面。
6.根据权利要求2至5之一所述的真空泵，其特征在于，所述容纳部(48)无底切地构建。
7.根据权利要求2至6之一所述的真空泵，其特征在于，所述阀体(42)由弹性的、尤其是橡胶弹性的材料构成或者由不锈钢、尤其是弹簧钢构成。
8.根据权利要求2至7之一所述的真空泵，其特征在于，保持区段(46)栓塞状地、尤其是柱体形地构建。
9.根据上述权利要求之一所述的真空泵，其特征在于，罐状阀壳体(28)的壳体底部(32)具有延续壳体外壳(30)超过壳体底部(32)的边缘(34)，并且保持片(50)挤入从壳体底部(32)突出的边缘(34)形成的中间空间中。
10.根据权利要求9所述的真空泵，其特征在于，阀体(42)设置在壳体底部(32)和保持片(50)之间。
11.根据权利要求2至8和9之一所述的真空泵，其特征在于，保持片(50)将保持区段保持在壳体底部(32)中。
12.一种吸入止回阀(24)，其用于根据上述权利要求之一所述的真空泵(12)。
CN2009801461106A 2008-11-20 2009-07-30 真空泵 Pending CN102216622A (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008059228A DE102008059228A1 (de) 2008-11-20 2008-11-20 Vakuumpumpe
DE102008059228.5 2008-11-20
PCT/EP2009/059868 WO2010057690A2 (de) 2008-11-20 2009-07-30 Vakuumpumpe

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CN102216622A true CN102216622A (zh) 2011-10-12

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US (1) US20110217200A1 (zh)
EP (1) EP2347131B1 (zh)
CN (1) CN102216622A (zh)
DE (1) DE102008059228A1 (zh)
WO (1) WO2010057690A2 (zh)

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US20110217200A1 (en) 2011-09-08
EP2347131B1 (de) 2012-11-28
WO2010057690A3 (de) 2010-07-15
DE102008059228A1 (de) 2010-05-27
EP2347131A2 (de) 2011-07-27
WO2010057690A2 (de) 2010-05-27

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