WO2004065795A1 - Pump - Google Patents

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Publication number
WO2004065795A1
WO2004065795A1 PCT/EP2004/000277 EP2004000277W WO2004065795A1 WO 2004065795 A1 WO2004065795 A1 WO 2004065795A1 EP 2004000277 W EP2004000277 W EP 2004000277W WO 2004065795 A1 WO2004065795 A1 WO 2004065795A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump
flange
nozzle
housing
pump housing
Prior art date
Application number
PCT/EP2004/000277
Other languages
German (de)
French (fr)
Inventor
Andreas Buss
Friedrich Schuler
Original Assignee
Luk Automobiltechnik Gmbh & Co. Kg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Luk Automobiltechnik Gmbh & Co. Kg filed Critical Luk Automobiltechnik Gmbh & Co. Kg
Priority to AT04702662T priority Critical patent/ATE503931T1/en
Priority to EP04702662A priority patent/EP1588054B1/en
Priority to DE502004012345T priority patent/DE502004012345D1/en
Publication of WO2004065795A1 publication Critical patent/WO2004065795A1/en

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Classifications

    • 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
    • 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
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • 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
    • 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
    • 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
    • F04C2240/00—Components
    • F04C2240/30—Casings or housings

Definitions

  • the invention relates to a pump, in particular a vacuum pump for motor vehicles, with a pump flange and a pump housing, wherein the pump housing can be a pot-shaped sheet metal housing, with an intake port, which is connected to a suction chamber formed in a pump chamber and has a non-return valve which Prevents passage of a pressure medium through the intake manifold in one direction of flow.
  • Such pumps are known. They usually have a die-cast housing, which requires a complex casting tool with a slide for the pump flange or pump housing due to the lateral position of the suction nozzle. With these pumps, the intake manifold is molded on the side.
  • the disadvantages of such vacuum pumps are that the pump housings are relatively expensive and the intake port position has to be adapted to the installation conditions, so that the pump housing cannot be standardized.
  • pumps with standardized pump housings e.g. deep-drawn sheet metal housings
  • the intake port is not accommodated in the pump housing, but laterally in the pump flange.
  • Such pumps have the disadvantages of a large axial overall height of the pump flange and thus of the pump, the nozzle position being inflexible in the axial direction.
  • a pump in particular a vacuum pump for motor vehicles, with a pump flange and with a pump housing, it being possible for the pump housing to be a pot-shaped sheet metal housing, with an intake port which is connected to a suction chamber formed in a pump chamber and has a check valve, which prevents the passage of a pressure medium through the intake port in a flow direction, the intake port having a port connection and a port flange and being arranged as a separate component by means of a flange connection on the pump housing and / or pump flange and the longitudinal axis of the port connection having different angle and / or height positions in May have reference to the longitudinal axis of the nozzle flange.
  • a pump according to the invention is characterized in that the check valve is arranged in the nozzle flange.
  • the check valve can be arranged in the nozzle connection.
  • a pump is preferred in which the intake port is connected to the pump chamber via a connecting channel.
  • the connecting channel is arranged in the parting plane between the pump flange and the pump housing.
  • a pump is preferred in which the connecting channel is formed by a depression which can be arranged in the pump flange and / or pump housing.
  • the pump housing of a pump has a cutout at one end of the connecting duct, which serves as a connection between the intake manifold and the connecting duct.
  • a pump is also preferred, in which the connecting piece of the suction connecting piece can be arranged straight or angled relative to the connecting piece flange.
  • a pump according to the invention is characterized in that a seal is passed between the pump housing and the pump flange around the connecting channel.
  • Another pump according to the invention is characterized in that the nozzle flange rests on the pump housing and is connected to the pump flange through the pump housing, for example by screws or rivets.
  • a pump is preferred in which the nozzle flange rests on the pump housing and is fixed on the pump housing by pressing or gluing or caulking.
  • a pump is also preferred in which the longitudinal axis of the nozzle flange runs parallel to the longitudinal axis of the rotor.
  • Figure 1 shows an exploded view of the essential parts of the pump.
  • FIG. 2 shows a cross section through part of the pump and the intake manifold in the area of the intake manifold attachment.
  • an intake manifold 1 which essentially has a nozzle connection 12 and a nozzle flange 14.
  • the nozzle flange 14 contains two fastening screws 16, with which the nozzle flange can be connected to the pump flange 3 through the pump housing 2.
  • the fastening screws 16 are guided through through openings 18 of the pump housing 2 in thread 20 in the pump flange 3.
  • the pump housing 2 can be made in this illustration from a deep-drawn sheet metal cover.
  • the pump flange 3 is preferably produced as a die-cast aluminum part.
  • Other essential components of the vacuum pump are the rotor 10, which can guide a monofoil 9 with attached sealing caps 24 in a slot 22.
  • the rotor 10 is guided eccentrically to the pump housing 2 through a bearing opening 26 in the pump flange 3, the pump housing 2 representing the raceway for the wing 9 or the sealing caps 24.
  • the function of such a mono-vane pump is known and will therefore not be explained further here.
  • the structure and arrangement of the intake manifold 1 on the vacuum pump is essential to the invention.
  • the intake port 1 contains a port connection 12 and a port flange 14. Air is evacuated via the port connection 12 from a brake booster located in the motor vehicle. Different installation conditions in different motor vehicles require that the position of the connection piece 12 in relation to the pump can be arranged differently from case to case. Therefore, a nozzle connection that is firmly integrated into the pump housing 2 would be, for. B. disadvantageous due to the complex sheet metal lid tool. Therefore, the flange design according to the invention is selected here.
  • the pressure medium sucked in by the vacuum pump is passed through an opening 8 in the pump housing 2 into a connecting channel 4 in the pump flange 3, the connecting channel 4 extending into the pump chamber 7 and thus connecting the suction chamber of the pump to the suction port 1.
  • the connecting channel 4 can preferably be represented here by a recess in the pump flange 3, since the connecting channel lies in the parting plane between the pump flange 3 and the pump housing 2.
  • the depression forming the connecting channel 4 does not require an undercut, so that it can be produced inexpensively. In a cast part it does not need a slide and can be pre-cast, in a deep-drawn part it can be stamped. That would be the case if e.g. B. alternatively, the connecting channel 4 would be introduced into the metal cover 2.
  • the nozzle connection 12 of the intake manifold 1 can be straight or angled. A high degree of flexibility is ensured by varying the height, the angle or the position of the nozzle connection 12 relative to the nozzle flange 14.
  • a seal 5 between the pump housing 2 and the pump flange 3 is guided around the intake duct 4.
  • the suction nozzle 1 rests on the pump housing 2 and is connected through the pump housing 2 to the pump flange 3, for example by screws or rivets. This allows the number of remaining fasteners, e.g. B. the screws 28, between the pump flange 3 and the pump housing 2 can be reduced.
  • Alternative joining options for the intake manifold 1 would be pressing or gluing or caulking on the housing cover 2 or through the housing cover 2 as far as into the pump flange 3.
  • the intake manifold 1 according to the invention and part of the pump housing 2 is shown in section.
  • the intake port 1 has the port connection 12, the longitudinal axis 30 of which is angled by 90 ° relative to the port flange 14 and the longitudinal axis 32.
  • the nozzle flange 14 is sealed by an O-ring seal 36 with respect to the pump housing 2, which is guided in a guide ring 34 which is clipped or pressed into the nozzle flange.
  • the pump housing 2 in turn lies sealingly on the pump flange 3, a seal 5 between the pump housing 2 and the pump flange 3 producing the necessary seal.
  • a connection channel 4 is shown, which connects the intake port 1 with the pump interior 7 and the suction space formed therein.
  • the intake manifold 1 also contains a check valve 6 which has a valve membrane 40 which is guided on a central pin 42.
  • the valve membrane 40 rests on a sealing seat 44 and through openings, not shown here, located therein if the pressure in the connecting channel 4 and in the pump chamber 7 is greater than the negative pressure in the brake booster, which is effective in the connection port 12. This will cause the membrane, e.g. B.
  • the brake booster can not lose its vacuum.
  • a negative pressure is generated in the pump chamber 7, which lifts the check valve membrane 40 from the seat 44 via the connecting channel 4 and thereby also generates a vacuum via the connecting piece 12 in the brake booster.
  • the arranged in the nozzle flange 14 of the suction port 1 line space 48 is closed by a cover 46, which here z. B. can be pressed gas-tight.
  • the nozzle connection 12 also has a circumferential elevation 38, which ensures the sealing of the nozzle connection 12 against a pushed-on suction hose.
  • the inventive design of the intake manifold 1 and the vacuum pump equipped with it shows the advantage of a compact vacuum pump with a space-saving arrangement of intake manifold and intake duct.
  • the intake manifold construction represents a flexible concept due to different intake manifold designs, which are standardized for a vacuum pump Pump housing can be used. This arrangement of the intake manifold enables a low axial height of the pump and cost-effective manufacture.

Abstract

Disclosed is a pump, especially a vacuum pump for motor vehicles, comprising a pump flange (3) and a pump housing (2) which can be embodied as a pot-shaped sheet metal housing. The inventive pump further comprises a suction port (1) which is connected to a suction chamber that is configured in the pump space (7). The suction port (1) is provided with a check valve (6) that prevents passage of a pressurizing means through the suction port (1) in one direction of flow.

Description

Pumpe pump
Die Erfindung betrifft eine Pumpe, insbesondere eine Vakuumpumpe für Kraftfahrzeuge, mit einem Pumpenflansch und einem Pumpengehäuse, wobei das Pumpengehäuse ein topfformiges Blechgehäuse sein kann, mit einem Ansaugstutzen, der mit einem in einem Pumpenraum ausgebildeten Saugraum in Verbindung steht und ein Rückschlagventil aufweist, das den Durchtritt eines Druckmittels durch den Ansaugstutzen in einer Strömungsrichtung verhindert.The invention relates to a pump, in particular a vacuum pump for motor vehicles, with a pump flange and a pump housing, wherein the pump housing can be a pot-shaped sheet metal housing, with an intake port, which is connected to a suction chamber formed in a pump chamber and has a non-return valve which Prevents passage of a pressure medium through the intake manifold in one direction of flow.
Derartige Pumpen sind bekannt. Sie besitzen meist ein Druckgussgehäuse, bei welchem durch die seitliche Lage des Ansaugstutzens ein aufwendiges Gusswerkzeug mit Schieber für Pumpenflansch bzw. Pumpengehäuse erforderlich ist. Bei diesen Pumpen ist die Aufnahme des Ansaugstutzens seitlich angegossen. Die Nachteile derartiger Vakuumpumpen bestehen darin, dass die Pumpengehäuse relativ teuer sind und die Ansaugstutzenlage den Einbaubedingungen angepasst werden muss, sodass dadurch keine Standardisierung des Pumpengehäuses möglich ist.Such pumps are known. They usually have a die-cast housing, which requires a complex casting tool with a slide for the pump flange or pump housing due to the lateral position of the suction nozzle. With these pumps, the intake manifold is molded on the side. The disadvantages of such vacuum pumps are that the pump housings are relatively expensive and the intake port position has to be adapted to the installation conditions, so that the pump housing cannot be standardized.
Weiterhin sind Pumpen mit standardisierten Pumpengehäusen (z. B. tiefgezogenen Blechgehäusen) bekannt, weshalb die Aufnahme des Ansaugstutzens nicht im Pumpengehäuse, sondern seitlich im Pumpenflansch angeordnet ist. Derartige Pumpen weisen als Nachteile eine große axiale Bauhöhe des Pumpenflansches und somit der Pumpe auf, wobei die Stutzenlage in axialer Richtung unflexibel ist.Furthermore, pumps with standardized pump housings (e.g. deep-drawn sheet metal housings) are known, which is why the intake port is not accommodated in the pump housing, but laterally in the pump flange. Such pumps have the disadvantages of a large axial overall height of the pump flange and thus of the pump, the nozzle position being inflexible in the axial direction.
Es ist Aufgabe der Erfindung, eine Pumpe zu schaffen, welche diese Nachteile nicht aufweist. Die Aufgabe wird gelöst durch eine Pumpe, insbesondere Vakuumpumpe für Kraftfahrzeuge, mit einem Pumpenflansch und mit einem Pumpengehäuse, wobei das Pumpengehäuse ein topfformiges Blechgehäuse sein kann, mit einem Ansaugstutzen, der mit einem in einem Pumpenraum ausgebildeten Saugraum in Verbindung steht und ein Rückschagventil aufweist, das den Durchtritt eines Druckmittels durch den Ansaugstutzen in einer Strömungsrichtung verhindert, wobei der Ansaugstutzen einen Stutzenanschluss und einen Stutzenflansch aufweist und als separates Bauteil mittels einer Flanschverbindung am Pumpengehäuse und / oder Pumpenflansch angeordnet ist und die Längsachse des Stutzenanschlusses unterschiedliche Winkel - und / oder Höhenlagen in Bezug auf die Längsachse des Stutzenflansches aufweisen kann.It is an object of the invention to provide a pump which does not have these disadvantages. The object is achieved by a pump, in particular a vacuum pump for motor vehicles, with a pump flange and with a pump housing, it being possible for the pump housing to be a pot-shaped sheet metal housing, with an intake port which is connected to a suction chamber formed in a pump chamber and has a check valve, which prevents the passage of a pressure medium through the intake port in a flow direction, the intake port having a port connection and a port flange and being arranged as a separate component by means of a flange connection on the pump housing and / or pump flange and the longitudinal axis of the port connection having different angle and / or height positions in May have reference to the longitudinal axis of the nozzle flange.
Eine erfindungsgemäße Pumpe zeichnet sich dadurch aus, dass das Rückschlagventil im Stutzenflansch angeordnet ist. Bei einer weiteren erfindungsgemäßen Pumpe kann das Rückschlagventil im Stutzenanschluss angeordnet sein.A pump according to the invention is characterized in that the check valve is arranged in the nozzle flange. In a further pump according to the invention, the check valve can be arranged in the nozzle connection.
Bevorzugt wird eine Pumpe, bei welcher der Ansaugstutzen über einen Verbindungskanal mit dem Pumpenraum in Verbindung steht. Erfindungsgemäß ist der Verbindungskanal in der Trennebene zwischen Pumpenflansch und Pumpengehäuse angeordnet. Weiterhin wird eine Pumpe bevorzugt, bei welcher der Verbindungskanal durch eine Vertiefung gebildet wird, die im Pumpenflansch und / oder Pumpengehäuse angeordnet sein kann. Erfindungsgemäß weist das Pumpengehäuse einer Pumpe an einem Ende des Verbindungskanals eine Aussparung auf, die als Verbindung zwischen Ansaugstutzen und Verbindungskanal dient.A pump is preferred in which the intake port is connected to the pump chamber via a connecting channel. According to the invention, the connecting channel is arranged in the parting plane between the pump flange and the pump housing. Furthermore, a pump is preferred in which the connecting channel is formed by a depression which can be arranged in the pump flange and / or pump housing. According to the invention, the pump housing of a pump has a cutout at one end of the connecting duct, which serves as a connection between the intake manifold and the connecting duct.
Bevorzugt wird auch eine Pumpe, bei welcher der Stutzenanschluss des Ansaugstutzens gerade oder abgewinkelt gegenüber dem Stutzenflansch angeordnet sein kann. Eine erfindungsgemäße Pumpe zeichnet sich dadurch aus, dass eine Dichtung zwischen Pumpengehäuse und Pumpenflansch um den Verbindungskanal herumgeführt ist. Eine weitere erfindungsgemäße Pumpe zeichnet sich dadurch aus, dass der Stutzenflansch auf dem Pumpengehäuse aufliegt und durch das Pumpengehäuse hindurch mit dem Pumpenflansch verbunden ist, beispielsweise durch Schrauben oder Nieten. Weiterhin wird eine Pumpe bevorzugt, bei welcher der Stutzenflansch auf dem Pumpengehäuse aufliegt und durch Pressen oder Kleben oder Verstemmen auf dem Pumpengehäuse fixiert ist.A pump is also preferred, in which the connecting piece of the suction connecting piece can be arranged straight or angled relative to the connecting piece flange. A pump according to the invention is characterized in that a seal is passed between the pump housing and the pump flange around the connecting channel. Another pump according to the invention is characterized in that the nozzle flange rests on the pump housing and is connected to the pump flange through the pump housing, for example by screws or rivets. Furthermore, a pump is preferred in which the nozzle flange rests on the pump housing and is fixed on the pump housing by pressing or gluing or caulking.
Auch wird eine Pumpe bevorzugt, bei welcher die Längsachse des Stutzenflansches parallel zur Längsachse des Rotors verläuft.A pump is also preferred in which the longitudinal axis of the nozzle flange runs parallel to the longitudinal axis of the rotor.
Die Erfindung wird nun anhand der Figuren beschrieben:The invention will now be described with reference to the figures:
Figur 1 zeigt in einer Explosionszeichung die wesentlichen Einzelteile der Pumpe.Figure 1 shows an exploded view of the essential parts of the pump.
In Figur 2 ist ein Querschnitt durch einen Teil der Pumpe und den Ansaugstutzen im Bereich der Ansaugstutzenbefestigung dargestellt.FIG. 2 shows a cross section through part of the pump and the intake manifold in the area of the intake manifold attachment.
In Figur 1 ist ein Ansaugstutzen 1 dargestellt, welcher im wesentlichen einen Stutzenanschluss 12 und einen Stutzenflansch 14 aufweist. Der Stutzenflansch 14 enthält zwei Befestigungschrauben 16, mit welchen der Stutzenflansch durch das Pumpengehäuse 2 hindurch mit dem Pumpenflansch 3 verbunden werden kann. Die Befestigungsschrauben 16 werden dabei durch Durchgangsöffnungen 18 des Pumpengehäuses 2 in Gewinde 20 im Pumpenflansch 3 geführt. Das Pumpengehäuse 2 kann in dieser Darstellung aus einem tiefgezogenen Blechdeckel hergestellt sein. Der Pumpenflansch 3 wird vorzugsweise als druckgegossenes Aluminiumteil hergestellt. Weitere wesentliche Bauteile der Vakuumpumpe sind der Rotor 10, welcher in einem Schlitz 22 einen Monoflügel 9 mit aufgesetzten Dichtkappen 24 führen kann. Durch eine Lageröffnung 26 im Pumpenflansch 3 wird der Rotor 10 exzentrisch zum Pumpengehäuse 2 geführt, wobei das Pumpengehäuse 2 die Laufbahn für den Flügel 9 bzw. die Dichtkappen 24 darstellt. Die Funktion einer derartigen Monoflügelzellenpumpe ist bekannt und soll deswegen hier nicht weiter erläutert werden. Für die Erfindung wesentlich ist der Aufbau und die Anordnung des Ansaugstutzens 1 an der Vakuumpumpe.In Figure 1, an intake manifold 1 is shown, which essentially has a nozzle connection 12 and a nozzle flange 14. The nozzle flange 14 contains two fastening screws 16, with which the nozzle flange can be connected to the pump flange 3 through the pump housing 2. The fastening screws 16 are guided through through openings 18 of the pump housing 2 in thread 20 in the pump flange 3. The pump housing 2 can be made in this illustration from a deep-drawn sheet metal cover. The pump flange 3 is preferably produced as a die-cast aluminum part. Other essential components of the vacuum pump are the rotor 10, which can guide a monofoil 9 with attached sealing caps 24 in a slot 22. The rotor 10 is guided eccentrically to the pump housing 2 through a bearing opening 26 in the pump flange 3, the pump housing 2 representing the raceway for the wing 9 or the sealing caps 24. The function of such a mono-vane pump is known and will therefore not be explained further here. The structure and arrangement of the intake manifold 1 on the vacuum pump is essential to the invention.
Der Ansaugstutzen 1 enthält, wie vorab schon erwähnt, einen Stutzenanschluss 12 und einen Stutzenflansch 14. Über den Stutzenanschluss 12 wird aus einem im Kraftfahrzeug befindlichen Bremskraftverstärker Luft evakuiert. Dabei erfordern unterschiedliche Einbaubedingungen in unterschiedlichen Kraftfahrzeugen, dass die Position des Stutzenanschlusses 12 in Relation zur Pumpe von Fall zu Fall unterschiedlich angeordnet sein kann. Daher wäre ein fest in das Pumpengehäuse 2 integrierter Stutzenanschluss z. B. aufgrund des komplexen Blechdeckelwerkzeuges von Nachteil. Daher wird hier die erfindungsgemäße Flanschausführung gewählt. Das von der Vakuumpumpe angesaugte Druckmittel wird durch eine Öffnung 8 im Pumpengehäuse 2 in einen Verbindungskanal 4 im Pumpenflansch 3 geleitet, wobei der Verbindungskanal 4 sich bis in den Pumpenraum 7 hinein erstreckt und somit den Ansaugraum der Pumpe mit dem Ansaugstutzen 1 verbindet. Der Verbindungskanal 4 kann hier vorzugsweise durch eine Vertiefung im Pumpenflansch 3 dargestellt werden, da der Verbindungskanal in der Trennebene zwischen dem Pumpenflansch 3 und dem Pumpengehäuse 2 liegt. Die den Verbindungskanal 4 bildende Vertiefung benötigt keinen Hinterschnitt, so dass sie kostengünstig hergestellt werden kann. In einem Gussteil braucht sie keinen Schieber und kann vorgegossen werden, in einem Tiefziehteil kann sie geprägt werden. Das wäre der Fall, wenn z. B. alternativ der Verbindungskanal 4 in den Blechdeckel 2 eingebracht würde. Der Stutzenanschluss 12 des Ansaugstutzens 1 kann gerade oder abgewinkelt sein. Durch Variation der Höhe, des Winkels oder der Lage des Stutzenanschlusses 12 gegenüber dem Stutzenflansch 14 ist eine hohe Flexibilität gewährleistet.As previously mentioned, the intake port 1 contains a port connection 12 and a port flange 14. Air is evacuated via the port connection 12 from a brake booster located in the motor vehicle. Different installation conditions in different motor vehicles require that the position of the connection piece 12 in relation to the pump can be arranged differently from case to case. Therefore, a nozzle connection that is firmly integrated into the pump housing 2 would be, for. B. disadvantageous due to the complex sheet metal lid tool. Therefore, the flange design according to the invention is selected here. The pressure medium sucked in by the vacuum pump is passed through an opening 8 in the pump housing 2 into a connecting channel 4 in the pump flange 3, the connecting channel 4 extending into the pump chamber 7 and thus connecting the suction chamber of the pump to the suction port 1. The connecting channel 4 can preferably be represented here by a recess in the pump flange 3, since the connecting channel lies in the parting plane between the pump flange 3 and the pump housing 2. The depression forming the connecting channel 4 does not require an undercut, so that it can be produced inexpensively. In a cast part it does not need a slide and can be pre-cast, in a deep-drawn part it can be stamped. That would be the case if e.g. B. alternatively, the connecting channel 4 would be introduced into the metal cover 2. The nozzle connection 12 of the intake manifold 1 can be straight or angled. A high degree of flexibility is ensured by varying the height, the angle or the position of the nozzle connection 12 relative to the nozzle flange 14.
In den Ansaugstutzen 1 kann ein Ansaugventil 6 integriert sein, welches später noch in Figur 2 genauer beschrieben wird. Eine Dichtung 5 zwischen dem Pumpengehäuse 2 und dem Pumpenflansch 3 wird um den Ansaugkanal 4 herumgeführt. Nach seiner Befestigung liegt der Ansaugstutzen 1 auf dem Pumpengehäuse 2 auf und wird durch das Pumpengehäuse 2 hindurch mit dem Pumpenflansch 3 verbunden, beispielsweise durch Schrauben oder Nieten. Dadurch kann die Zahl der übrigen Befestigungselemente, z. B. der Schrauben 28, zwischen Pumpenflansch 3 und Pumpengehäuse 2 reduziert werden. Alternative Fügemöglichkeiten des Ansaugstutzens 1 wären Pressen oder Kleben oder Verstemmen auf dem Gehäusedeckel 2 oder durch den Gehäusedeckel 2 hindurch bis in den Pumpenflansch 3.An intake valve 6, which will be described in more detail later in FIG. 2, can be integrated in the intake port 1. A seal 5 between the pump housing 2 and the pump flange 3 is guided around the intake duct 4. After it is attached, the suction nozzle 1 rests on the pump housing 2 and is connected through the pump housing 2 to the pump flange 3, for example by screws or rivets. This allows the number of remaining fasteners, e.g. B. the screws 28, between the pump flange 3 and the pump housing 2 can be reduced. Alternative joining options for the intake manifold 1 would be pressing or gluing or caulking on the housing cover 2 or through the housing cover 2 as far as into the pump flange 3.
In Figur 2 ist der erfindungsgemäße Ansaugstutzen 1 und ein Teil des Pumpengehäuses 2 im Schnitt dargestellt. Der Ansaugstutzen 1 weist zum einen den Stutzenanschluss 12 auf, dessen Längsachse 30 gegenüber dem Stutzenflansch 14 und dessen Längsachse 32 um 90° angewinkelt ist. Es sind aber je nach Einbaubedingungen im Kraftfahrzeug auch alle anderen Winkelpositionen der beiden Längsachsen 30 und 32 zueinander vorstellbar. Der Stutzenflansch 14 wird mittels einer O-Ringdichtung 36 gegenüber dem Pumpengehäuse 2 abgedichtet, welche in einem Führungsring 34, der in den Stutzenflansch eingeclipst oder verpreßt wird, geführt wird. Das Pumpengehäuse 2 wiederum liegt dichtend auf dem Pumpenflansch 3 auf, wobei eine Dichtung 5 zwischen Pumpengehäuse 2 und dem Pumpenflansch 3 die notwendige Abdichtung herstellt. Im Pumpenflansch 3 ist ein Verbindungskanal 4 dargestellt, welcher den Ansaugstutzen 1 mit dem Pumpeninnenraum 7 und dem sich darin bildenden Saugraum verbindet. Der Ansaugstutzen 1 enthält weiterhin ein Rückschlagventil 6, welches eine Ventilmembran 40 aufweist, welche auf einem zentralen Bolzen 42 geführt wird. Die Ventilmembran 40 liegt auf einem Dichtsitz 44 und darin befindlichen, hier nicht dargestellten Durchgangsöffnungen auf, wenn der Druck im Verbindungskanal 4 und im Pumpenraum 7 größer ist als der Unterdruck im Bremskraftverstärker, der im Stutzenanschluss 12 wirksam ist. Dadurch wird die Membran, z. B. beim Pumpenstillstand, gegen den Dichtsitz 44 gepresst, und der Bremskraftverstärker kann sein Vakuum nicht verlieren. Im Betrieb der Pumpe wird im Pumpenraum 7 ein Unterdruck erzeugt, welcher über den Verbindungskanal 4 die Rückschlagventilmembran 40 vom Sitz 44 abhebt und dadurch Vakuum über den Stutzenanschluss 12 auch im Bremskraftverstärker erzeugt. Der im Stutzenflansch 14 des Saugstutzens 1 angeordnete Leitungsraum 48 wird durch einen Deckel 46 abgeschlossen, der hier z. B. gasdicht eingepresst werden kann. Der Stutzenanschluss 12 weist ferner eine umlaufende Erhöhung 38 auf, welche das Abdichten des Stutzenanschlusses 12 gegenüber einem aufgeschobenen Saugschlauch gewährleistet.In Figure 2, the intake manifold 1 according to the invention and part of the pump housing 2 is shown in section. On the one hand, the intake port 1 has the port connection 12, the longitudinal axis 30 of which is angled by 90 ° relative to the port flange 14 and the longitudinal axis 32. However, depending on the installation conditions in the motor vehicle, all other angular positions of the two longitudinal axes 30 and 32 relative to one another are also conceivable. The nozzle flange 14 is sealed by an O-ring seal 36 with respect to the pump housing 2, which is guided in a guide ring 34 which is clipped or pressed into the nozzle flange. The pump housing 2 in turn lies sealingly on the pump flange 3, a seal 5 between the pump housing 2 and the pump flange 3 producing the necessary seal. In the pump flange 3, a connection channel 4 is shown, which connects the intake port 1 with the pump interior 7 and the suction space formed therein. The intake manifold 1 also contains a check valve 6 which has a valve membrane 40 which is guided on a central pin 42. The valve membrane 40 rests on a sealing seat 44 and through openings, not shown here, located therein if the pressure in the connecting channel 4 and in the pump chamber 7 is greater than the negative pressure in the brake booster, which is effective in the connection port 12. This will cause the membrane, e.g. B. at pump standstill, pressed against the sealing seat 44, and the brake booster can not lose its vacuum. When the pump is operating, a negative pressure is generated in the pump chamber 7, which lifts the check valve membrane 40 from the seat 44 via the connecting channel 4 and thereby also generates a vacuum via the connecting piece 12 in the brake booster. The arranged in the nozzle flange 14 of the suction port 1 line space 48 is closed by a cover 46, which here z. B. can be pressed gas-tight. The nozzle connection 12 also has a circumferential elevation 38, which ensures the sealing of the nozzle connection 12 against a pushed-on suction hose.
Die erfindungsgemäße Ausführung des Ansaugstutzens 1 und der damit ausgerüsteten Vakuumpumpe zeigt den Vorteil einer kompaktbauenden Unterdruckpumpe mit platzsparender Anordnung von Ansaugstutzen und Ansaugkanal. Die Ansaugstutzenkonstruktion stellt ein flexibles Konzept dar durch unterschiedliche Ansaugstutzengestaltungen, welche bei einer Vakuumpumpe mit einem standardisierten Pumpengehäuse einsetzbar sind. Durch diese Anordnung des Ansaugstutzens wird eine geringe axiale Bauhöhe der Pumpe und eine kostengünstige Herstellung ermöglicht. The inventive design of the intake manifold 1 and the vacuum pump equipped with it shows the advantage of a compact vacuum pump with a space-saving arrangement of intake manifold and intake duct. The intake manifold construction represents a flexible concept due to different intake manifold designs, which are standardized for a vacuum pump Pump housing can be used. This arrangement of the intake manifold enables a low axial height of the pump and cost-effective manufacture.

Claims

Patentansprüche claims
1. Pumpe, insbesondere Vakuumpumpe für Kraftfahrzeuge, mit einem Pumpenflansch (3) und einem Pumpengehäuse (2), wobei das Pumpengehäuse (2) ein topfformiges Blechgehäuse sein kann, mit einem Ansaugstutzen (1), der mit einem in einem Pumpenraum (7) ausgebildeten Saugraum in Verbindung steht und ein Rückschlagventil (6) aufweist, das den Durchtritt eines Druckmittels durch den Ansaugstutzen (1) in einer Strömungsrichtung verhindert, dadurch gekennzeichnet, dass der Ansaugstutzen (1) einen Stutzenanschluss (12) und einen Stutzenflansch (14) aufweist und als separates Bauteil mittels einer Flanschverbindung am Pumpengehäuse (2) und / oder Pumpenflansch (3) angeordnet ist und die Längsachse des Stutzenanschlusses (12) unterschiedliche Winkel - und / oder Höhenlagen in Bezug auf die Längsachse des Stutzenflansches (14) aufweisen kann.1. Pump, in particular vacuum pump for motor vehicles, with a pump flange (3) and a pump housing (2), wherein the pump housing (2) can be a pot-shaped sheet metal housing, with an intake port (1) which is connected to a pump chamber (7) trained suction chamber is connected and has a check valve (6) which prevents the passage of a pressure medium through the intake port (1) in a flow direction, characterized in that the intake port (1) has a port connection (12) and a port flange (14) and is arranged as a separate component by means of a flange connection on the pump housing (2) and / or pump flange (3) and the longitudinal axis of the nozzle connection (12) can have different angular and / or vertical positions with respect to the longitudinal axis of the nozzle flange (14).
2. Pumpe nach Anspruch 1 , dadurch gekennzeichnet, dass das Rückschlagventil (6) im Stutzenflansch (14) angeordnet ist.2. Pump according to claim 1, characterized in that the check valve (6) is arranged in the nozzle flange (14).
3. Pumpe nach Anspruch 1 , dadurch gekennzeichnet, dass das Rückschlagventil (6) im Stutzenanschluss (12) angeordnet ist.3. Pump according to claim 1, characterized in that the check valve (6) is arranged in the connection piece (12).
4. Pumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Ansaugstutzen (1) über einen Verbindungskanal (4) mit dem Pumpenraum (7) in Verbindung steht. 4. Pump according to one of the preceding claims, characterized in that the suction nozzle (1) via a connecting channel (4) with the pump chamber (7) is in communication.
5. Pumpe nach Anspruch 4, dadurch gekennzeichnet, dass der Verbindungskanal (4) in der Trennebene zwischen Pumpenflansch (3) und Pumpengehäuse (2) angeordnet ist.5. Pump according to claim 4, characterized in that the connecting channel (4) is arranged in the parting plane between the pump flange (3) and the pump housing (2).
6. Pumpe nach Anspruch 5, dadurch gekennzeichnet, dass der Verbindungskanal (4) durch eine Vertiefung gebildet wird, die im Pumpenflansch (3) und / oder Pumpengehäuse (2) angeordnet sein kann.6. Pump according to claim 5, characterized in that the connecting channel (4) is formed by a recess which can be arranged in the pump flange (3) and / or pump housing (2).
7. Pumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Pumpengehäuse (2) an einem Ende des Verbindungskanals (4) eine Aussparung (8) aufweist, die als Verbindung zwischen Ansaugstutzen (1) und Verbindungskanal (4) dient.7. Pump according to one of the preceding claims, characterized in that the pump housing (2) at one end of the connecting channel (4) has a recess (8) which serves as a connection between the intake manifold (1) and connecting channel (4).
8. Pumpe, insbesondere nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Stutzenanschluss (12) des Ansaugstutzens (1) gerade oder abgewinkelt gegenüber dem Stutzenflansch (14) angeordnet sein kann.8. Pump, in particular according to one of the preceding claims, characterized in that the nozzle connection (12) of the suction nozzle (1) can be arranged straight or angled relative to the nozzle flange (14).
9. Pumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass eine Dichtung (5) zwischen Pumpengehäuse (2) und Pumpenflansch (3) um den Verbindungskanal (4) herumgeführt ist.9. Pump according to one of the preceding claims, characterized in that a seal (5) between the pump housing (2) and the pump flange (3) is guided around the connecting channel (4).
10. Pumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Stutzenflansch (14) auf dem Pumpengehäuse (2) aufliegt und durch das Pumpengehäuse (2) hindurch mit dem Pumpenflansch (3) verbunden ist, beispielsweise durch Schrauben (16) oder Nieten. 10. Pump according to one of the preceding claims, characterized in that the connecting piece flange (14) rests on the pump housing (2) and is connected through the pump housing (2) to the pump flange (3), for example by screws (16) or rivets ,
11. Pumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Stutzenflansch (14) auf dem Pumpengehäuse (2) aufliegt und durch Pressen oder Kleben oder Verstemmen mit dem Pumpengehäuse (2) fixiert ist.11. Pump according to one of the preceding claims, characterized in that the nozzle flange (14) rests on the pump housing (2) and is fixed to the pump housing (2) by pressing or gluing or caulking.
12. Pumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Längsachse des Stutzenflansches (14) parallel zur Längsachse des Rotors (10) verläuft. 12. Pump according to one of the preceding claims, characterized in that the longitudinal axis of the nozzle flange (14) runs parallel to the longitudinal axis of the rotor (10).
PCT/EP2004/000277 2003-01-17 2004-01-16 Pump WO2004065795A1 (en)

Priority Applications (3)

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AT04702662T ATE503931T1 (en) 2003-01-17 2004-01-16 PUMP
EP04702662A EP1588054B1 (en) 2003-01-17 2004-01-16 Pump
DE502004012345T DE502004012345D1 (en) 2003-01-17 2004-01-16 PUMP

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DE10301622.8 2003-01-17
DE10301622 2003-01-17

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006048055A1 (en) * 2004-10-29 2006-05-11 Joma-Hydromechanic Gmbh Vane for a rotary pump
WO2007054055A1 (en) * 2005-11-09 2007-05-18 Ixetic Hückeswagen Gmbh Pump, particularly a van-cell vacuum pump
WO2008003279A2 (en) * 2006-07-01 2008-01-10 Ixetic Hückeswagen Gmbh Vacuum pump, injection mold for said pump housing, method for the production of the pump housing, and method for the production of a pump housing comprising two seals produced in one operation
WO2010085935A2 (en) 2009-02-02 2010-08-05 Ixetic Hückeswagen Gmbh Vacuum pump housing cover
WO2011134448A3 (en) * 2010-04-26 2013-03-07 Ixetic Hückeswagen Gmbh Vacuum pump
US8740589B2 (en) 2008-11-20 2014-06-03 Joma-Polytec Gmbh Vacuum pump

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DE3105665A1 (en) * 1980-02-20 1982-03-18 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid "Vane vacuum pump with pre-evacuation of the suction chamber, especially for power-assisted braking in motor vehicles"
US4360326A (en) * 1979-02-08 1982-11-23 Volkswagenwerk Ag Oil lubricated vacuum pump including an oil separator disposed adjacent of its suction opening
DE10147325A1 (en) * 2000-10-18 2002-05-16 Luk Automobiltech Gmbh & Co Kg Outlet, from pump, is constructed as tubular plug in element, which fits into tubular receptacle in pump body and locates a non-return valve; plug in element is held in place by retainer.

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4360326A (en) * 1979-02-08 1982-11-23 Volkswagenwerk Ag Oil lubricated vacuum pump including an oil separator disposed adjacent of its suction opening
DE3105665A1 (en) * 1980-02-20 1982-03-18 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid "Vane vacuum pump with pre-evacuation of the suction chamber, especially for power-assisted braking in motor vehicles"
DE10147325A1 (en) * 2000-10-18 2002-05-16 Luk Automobiltech Gmbh & Co Kg Outlet, from pump, is constructed as tubular plug in element, which fits into tubular receptacle in pump body and locates a non-return valve; plug in element is held in place by retainer.

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006048055A1 (en) * 2004-10-29 2006-05-11 Joma-Hydromechanic Gmbh Vane for a rotary pump
WO2007054055A1 (en) * 2005-11-09 2007-05-18 Ixetic Hückeswagen Gmbh Pump, particularly a van-cell vacuum pump
WO2008003279A2 (en) * 2006-07-01 2008-01-10 Ixetic Hückeswagen Gmbh Vacuum pump, injection mold for said pump housing, method for the production of the pump housing, and method for the production of a pump housing comprising two seals produced in one operation
WO2008003279A3 (en) * 2006-07-01 2008-03-13 Ixetic Hueckeswagen Gmbh Vacuum pump, injection mold for said pump housing, method for the production of the pump housing, and method for the production of a pump housing comprising two seals produced in one operation
US8740589B2 (en) 2008-11-20 2014-06-03 Joma-Polytec Gmbh Vacuum pump
WO2010085935A2 (en) 2009-02-02 2010-08-05 Ixetic Hückeswagen Gmbh Vacuum pump housing cover
WO2010085935A3 (en) * 2009-02-02 2012-01-26 Ixetic Hückeswagen Gmbh Vacuum pump housing cover
WO2011134448A3 (en) * 2010-04-26 2013-03-07 Ixetic Hückeswagen Gmbh Vacuum pump

Also Published As

Publication number Publication date
ATE503931T1 (en) 2011-04-15
EP1588054A1 (en) 2005-10-26
EP1588054B1 (en) 2011-03-30
DE502004012345D1 (en) 2011-05-12

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