EP1588054B1 - Pump - Google Patents

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Publication number
EP1588054B1
EP1588054B1 EP04702662A EP04702662A EP1588054B1 EP 1588054 B1 EP1588054 B1 EP 1588054B1 EP 04702662 A EP04702662 A EP 04702662A EP 04702662 A EP04702662 A EP 04702662A EP 1588054 B1 EP1588054 B1 EP 1588054B1
Authority
EP
European Patent Office
Prior art keywords
pump
flange
pipe
housing
pump housing
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP04702662A
Other languages
German (de)
French (fr)
Other versions
EP1588054A1 (en
Inventor
Andreas Buss
Friedrich Schuler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Magna Powertrain Hueckeswagen GmbH
Original Assignee
Ixetic Hueckeswagen GmbH
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 Ixetic Hueckeswagen GmbH filed Critical Ixetic Hueckeswagen GmbH
Publication of EP1588054A1 publication Critical patent/EP1588054A1/en
Application granted granted Critical
Publication of EP1588054B1 publication Critical patent/EP1588054B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 may be a cup-shaped sheet metal housing, with an intake manifold, which communicates with a suction chamber formed in a pump chamber and has a check valve, the Passage of a pressure medium through the intake in a flow direction prevented.
  • Such pumps are for example from the DE 31 05 665 known, which is considered as the closest prior art. They usually have a die-cast housing, in which an elaborate casting tool with slide for pump flange or pump housing is required by the lateral position of the intake manifold. In these pumps, the intake of the intake is molded laterally.
  • the disadvantages of such vacuum pumps are that the pump housings are relatively expensive and the Ansaugstutzenlage must be adapted to the installation conditions, so that no standardization of the pump housing is possible.
  • pumps with standardized pump housings eg deep-drawn sheet-metal housings
  • the intake intake is not arranged in the pump housing but laterally in the pump flange.
  • Such pumps have as disadvantages a large axial height of the pump flange and thus of the pump, wherein the nozzle layer is inflexible in the axial direction.
  • a pump in particular vacuum pump for motor vehicles, with a pump flange and with a pump housing
  • the pump housing may be a cup-shaped sheet-metal housing
  • an intake manifold which communicates with a suction chamber formed in a pump chamber and has a return valve, which prevents the passage of a pressure medium through the intake manifold in a flow direction
  • the intake manifold has a nozzle connection and a nozzle flange and is arranged as a separate component by means of a flange on the pump housing and / or pump flange and the longitudinal axis of the nozzle connection different angle - and / or altitudes Can 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 may be arranged in the nozzle connection.
  • a pump in which the intake manifold communicates with 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 recess which can be arranged in the pump flange and / or pump housing.
  • the pump housing of a pump at one end of the connecting channel on a recess which serves as a connection between the intake manifold and the connecting channel.
  • a pump in which the nozzle connection of the intake can be arranged straight or angled with respect to the nozzle flange.
  • a pump according to the invention is characterized in that a seal between pump housing and pump flange is guided 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 through the pump housing with the pump flange, for example by screws or rivets.
  • a pump is preferred in which the nozzle flange rests on the pump housing and is fixed by pressing or gluing or caulking on the pump housing.
  • a pump in which the longitudinal axis of the nozzle flange extends parallel to the longitudinal axis of the rotor.
  • FIG. 2 is a cross section through a part of the pump and the intake port in the region of Ansaugstutzenbefest Trent shown.
  • FIG. 1 an intake manifold 1 is shown, which has a nozzle connection 12 and a nozzle flange 14 substantially.
  • the nozzle flange 14 includes two fastening screws 16, with which the nozzle flange can be connected through the pump housing 2 with the pump flange 3.
  • the fastening screws 16 are guided through through holes 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 lid.
  • the pump flange 3 is preferably made as a die-cast aluminum part.
  • Other essential components of the vacuum pump are the rotor 10, which can lead in a slot 22 a Monoeriel 9 with attached sealing caps 24.
  • the rotor 10 is guided eccentrically to the pump housing 2, wherein the pump housing 2, the raceway for the wing 9 and the sealing caps 24 represents.
  • the function of such a monoerielzellenpumpe is known and should therefore not be further explained here.
  • Essential to the invention is the structure and the arrangement of the intake manifold 1 on the vacuum pump.
  • the intake manifold 1 contains, as already mentioned, a nozzle connection 12 and a nozzle flange 14. About the nozzle connection 12 is evacuated from a brake booster located in the motor vehicle. Different installation conditions in different motor vehicles require that the position of the nozzle connection 12 in relation to the pump can be arranged differently from case to case. Therefore, a firmly integrated into the pump housing 2 nozzle connection z. B. due to the complex metal cover tool disadvantage. Therefore, the flange design according to the invention is chosen here.
  • the sucked by the vacuum pump pressure medium is passed through an opening 8 in the pump housing 2 in a connecting channel 4 in the pump flange 3, wherein the connecting channel 4 extends into the pump chamber 7 into and thus connects the suction of the pump with the intake manifold 1.
  • the connecting channel 4 can be represented here preferably by a depression in the pump flange 3, since the connecting channel is located 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 casting she needs no slider and can be pre-cast, in a deep-drawn part it can be embossed. That would be the case if z. B. alternatively, the connecting channel 4 would be introduced into the sheet metal lid 2.
  • the nozzle connection 12 of the intake manifold 1 may be straight or angled. By varying the height, the angle or the position of the nozzle connection 12 relative to the nozzle flange 14, a high degree of flexibility is ensured.
  • an intake valve 6 may be integrated, which later in FIG. 2 will be described in more detail.
  • a seal 5 between the pump housing 2 and the pump flange 3 is guided around the intake passage 4.
  • the intake manifold 1 rests on the pump housing 2 and is connected through the pump housing 2 with the pump flange 3, for example by screws or rivets. This allows the number of remaining fasteners, z. B. the screws 28 can be reduced between the pump flange 3 and the pump housing 2.
  • Alternative joining possibilities of the intake manifold 1 would be pressing or gluing or caulking on the housing cover 2 or through the housing cover 2 into the pump flange 3.
  • FIG. 2 the inventive intake manifold 1 and a part of the pump housing 2 is shown in section.
  • the intake manifold 1 has on the one hand the nozzle connection 12, whose longitudinal axis 30 is angled relative to the nozzle flange 14 and its longitudinal axis 32 by 90 °.
  • the nozzle flange 14 is sealed by means of 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 is sealingly on the pump flange 3, wherein a seal 5 between the pump housing 2 and the pump flange 3 produces the necessary seal.
  • a connecting channel 4 is shown, which connects the intake manifold 1 with the pump interior 7 and the suction chamber forming therein.
  • the intake manifold 1 further includes a check valve 6, which has a valve diaphragm 40 which is guided on a central pin 42.
  • the valve membrane 40 rests on a sealing seat 44 and located therein, not shown through holes when 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 nozzle connection 12. As a result, the membrane, z. B.
  • the pump shutdown pressed against the sealing seat 44, and 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 generates vacuum via the nozzle connection 12 also in the brake booster.
  • the arranged in the neck flange 14 of the Saugstutzens 1 line space 48 is closed by a lid 46, the z here. B. can be pressed gas-tight.
  • the nozzle connection 12 also has a peripheral elevation 38, which ensures the sealing of the nozzle connection 12 with respect to a deferred suction hose.
  • the inventive design of the intake manifold 1 and the thus equipped vacuum pump shows the advantage of a compact vacuum pump with space-saving arrangement of intake and intake.
  • the intake manifold design provides a flexible concept through different intake manifold designs used with a standard vacuum pump Pump housing can be used. This arrangement of the intake manifold allows a low axial height of the pump and a cost-effective production.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Fluid-Driven Valves (AREA)
  • Eye Examination Apparatus (AREA)
  • Compressor (AREA)

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

Die Erfindung betrifft eine Pumpe, insbesondere eine Vakuumpumpe für Kraftfahrzeuge, mit einem Pumpenflansch und einem Pumpengehäuse, wobei das Pumpengehäuse ein topfförmiges 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 may be a cup-shaped sheet metal housing, with an intake manifold, which communicates with a suction chamber formed in a pump chamber and has a check valve, the Passage of a pressure medium through the intake in a flow direction prevented.

Derartige Pumpen sind zum Beispiel aus der DE 31 05 665 bekannt, die als nächstliegender Stand der Technik angesehen wird. 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 for example from the DE 31 05 665 known, which is considered as the closest prior art. They usually have a die-cast housing, in which an elaborate casting tool with slide for pump flange or pump housing is required by the lateral position of the intake manifold. In these pumps, the intake of the intake is molded laterally. The disadvantages of such vacuum pumps are that the pump housings are relatively expensive and the Ansaugstutzenlage must be adapted to the installation conditions, so that no standardization of the pump housing is possible.

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 (eg deep-drawn sheet-metal housings) are known, for which reason the intake intake is not arranged in the pump housing but laterally in the pump flange. Such pumps have as disadvantages a large axial height of the pump flange and thus of the pump, wherein the nozzle layer is inflexible in the axial direction.

Es ist Aufgabe der Erfindung, eine Pumpe zu schaffen, welche diese Nachteile nicht aufweist.It is an object of the invention to provide a pump which does not have these disadvantages.

Die Aufgabe wird gelöst durch eine Pumpe, insbesondere Vakuumpumpe für Kraftfahrzeuge, mit einem Pumpenflansch und mit einem Pumpengehäuse, wobei das Pumpengehäuse ein topfförmiges 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.The object is achieved by a pump, in particular vacuum pump for motor vehicles, with a pump flange and with a pump housing, wherein the pump housing may be a cup-shaped sheet-metal housing, with an intake manifold which communicates with a suction chamber formed in a pump chamber and has a return valve, which prevents the passage of a pressure medium through the intake manifold in a flow direction, wherein the intake manifold has a nozzle connection and a nozzle flange and is arranged as a separate component by means of a flange on the pump housing and / or pump flange and the longitudinal axis of the nozzle connection different angle - and / or altitudes Can 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 may 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.Preference is given to a pump in which the intake manifold communicates with 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 recess which can be arranged in the pump flange and / or pump housing. According to the invention, the pump housing of a pump at one end of the connecting channel on a recess which serves as a connection between the intake manifold and the connecting channel.

Bevorzugt wird auch eine Pumpe, bei welcher der Stutzenanschluss des Ansaugstutzens gerade oder abgewinkelt gegenüber dem Stutzenflansch angeordnet sein kann.Also preferred is a pump in which the nozzle connection of the intake can be arranged straight or angled with respect to the nozzle flange.

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 according to the invention is characterized in that a seal between pump housing and pump flange is guided 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 through the pump housing with the pump flange, for example by screws or rivets. Furthermore, a pump is preferred in which the nozzle flange rests on the pump housing and is fixed by pressing or gluing or caulking on the pump housing.

Auch wird eine Pumpe bevorzugt, bei welcher die Längsachse des Stutzenflansches parallel zur Längsachse des Rotors verläuft.Also preferred is a pump in which the longitudinal axis of the nozzle flange extends parallel to the longitudinal axis of the rotor.

Die Erfindung wird nun anhand der Figuren beschrieben:

  • Figur 1 zeigt in einer Explosionszeichung die wesentlichen Einzelteile der Pumpe.
The invention will now be described with reference to the figures:
  • FIG. 1 shows in an exploded view 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.In FIG. 2 is a cross section through a part of the pump and the intake port in the region of Ansaugstutzenbefestigung shown.

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 FIG. 1 an intake manifold 1 is shown, which has a nozzle connection 12 and a nozzle flange 14 substantially. The nozzle flange 14 includes two fastening screws 16, with which the nozzle flange can be connected through the pump housing 2 with the pump flange 3. The fastening screws 16 are guided through through holes 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 lid. The pump flange 3 is preferably made as a die-cast aluminum part. Other essential components of the vacuum pump are the rotor 10, which can lead in a slot 22 a Monoflügel 9 with attached sealing caps 24. Through a bearing opening 26 in the pump flange 3, the rotor 10 is guided eccentrically to the pump housing 2, wherein the pump housing 2, the raceway for the wing 9 and the sealing caps 24 represents. The function of such a monoflügelzellenpumpe is known and should therefore not be further explained here. Essential to the invention is the structure and the arrangement of the intake manifold 1 on the vacuum pump.

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.The intake manifold 1 contains, as already mentioned, a nozzle connection 12 and a nozzle flange 14. About the nozzle connection 12 is evacuated from a brake booster located in the motor vehicle. Different installation conditions in different motor vehicles require that the position of the nozzle connection 12 in relation to the pump can be arranged differently from case to case. Therefore, a firmly integrated into the pump housing 2 nozzle connection z. B. due to the complex metal cover tool disadvantage. Therefore, the flange design according to the invention is chosen here. The sucked by the vacuum pump pressure medium is passed through an opening 8 in the pump housing 2 in a connecting channel 4 in the pump flange 3, wherein the connecting channel 4 extends into the pump chamber 7 into and thus connects the suction of the pump with the intake manifold 1. The connecting channel 4 can be represented here preferably by a depression in the pump flange 3, since the connecting channel is located 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 casting she needs no slider and can be pre-cast, in a deep-drawn part it can be embossed. That would be the case if z. B. alternatively, the connecting channel 4 would be introduced into the sheet metal lid 2. The nozzle connection 12 of the intake manifold 1 may be straight or angled. By varying the height, the angle or the position of the nozzle connection 12 relative to the nozzle flange 14, a high degree of flexibility is ensured.

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.In the intake 1, an intake valve 6 may be integrated, which later in FIG. 2 will be described in more detail. A seal 5 between the pump housing 2 and the pump flange 3 is guided around the intake passage 4. After its attachment, the intake manifold 1 rests on the pump housing 2 and is connected through the pump housing 2 with the pump flange 3, for example by screws or rivets. This allows the number of remaining fasteners, z. B. the screws 28 can be reduced between the pump flange 3 and the pump housing 2. Alternative joining possibilities of the intake manifold 1 would be pressing or gluing or caulking on the housing cover 2 or through the housing cover 2 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 FIG. 2 the inventive intake manifold 1 and a part of the pump housing 2 is shown in section. The intake manifold 1 has on the one hand the nozzle connection 12, whose longitudinal axis 30 is angled relative to the nozzle flange 14 and its longitudinal axis 32 by 90 °. However, depending on the installation conditions in the motor vehicle, all other angular positions of the two longitudinal axes 30 and 32 are also conceivable. The nozzle flange 14 is sealed by means of 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 is sealingly on the pump flange 3, wherein a seal 5 between the pump housing 2 and the pump flange 3 produces the necessary seal. In the pump flange 3, a connecting channel 4 is shown, which connects the intake manifold 1 with the pump interior 7 and the suction chamber forming therein. The intake manifold 1 further includes a check valve 6, which has a valve diaphragm 40 which is guided on a central pin 42. The valve membrane 40 rests on a sealing seat 44 and located therein, not shown through holes when 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 nozzle connection 12. As a result, the membrane, z. B. pump shutdown, pressed against the sealing seat 44, and the brake booster can not lose its vacuum. During operation of the pump, 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 generates vacuum via the nozzle connection 12 also in the brake booster. The arranged in the neck flange 14 of the Saugstutzens 1 line space 48 is closed by a lid 46, the z here. B. can be pressed gas-tight. The nozzle connection 12 also has a peripheral elevation 38, which ensures the sealing of the nozzle connection 12 with respect to a deferred 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 thus equipped vacuum pump shows the advantage of a compact vacuum pump with space-saving arrangement of intake and intake. The intake manifold design provides a flexible concept through different intake manifold designs used with a standard vacuum pump Pump housing can be used. This arrangement of the intake manifold allows a low axial height of the pump and a cost-effective production.

Claims (12)

  1. Pump, more particularly a vacuum pump for motor vehicles, having a pump flange (3) and a pump housing (2) wherein the pump housing (2) can be a pot-shaped sheet metal housing, with a suction intake pipe (1) which is connected to a suction chamber formed in a pump chamber (7) and has a non-return valve (6) which prevents the passage of the pressurised medium through the suction intake pipe (1) in one flow direction, characterised in that the suction intake pipe (1) has a pipe connector (12) and a pipe flange (14) and is mounted as a separate component part by means of a flange connection on the pump housing (2) and/or pump flange (3) and the longitudinal axis of the pipe connector (12) can have a different angle - and/or vertical position in relation to the longitudinal axis of the pipe flange (14).
  2. Pump according to claim 1 characterised in that the non-return valve (6) is arranged in the pipe flange (14).
  3. Pump according to claim 1 characterised in that the non-return valve (6) is mounted in the pipe connector (12).
  4. Pump according to one of the preceding claims characterised in that the suction intake pipe (1) is connected to the pump chamber (7) by a connecting duct (4).
  5. Pump according to claim 4 characterised in that the connecting duct (4) is mounted in the dividing plane between the pump flange (3) and the pump housing (2).
  6. Pump according to claim 5 characterised in that the connecting duct (4) is formed by an indentation which can be arranged in the pump flange (3) and/or pump housing (2).
  7. Pump according to one of the preceding claims characterised in that the pump housing (2) has at one end of the connecting duct (4) a recess (8) which serves as a connection between the suction intake pipe (1) and the connecting duct (4).
  8. Pump according to one of the preceding claims characterised in that the pipe connector (12) of the suction intake pipe (1) can be mounted straight or angled relative to the pipe flange (14).
  9. Pump according to one of the preceding claims characterised in that a seal (5) between the pump housing (2) and the pump flange (3) is guided around the connecting duct (4).
  10. Pump according to one of the preceding claims characterised in that the pipe flange (14) rests on the pump housing (2) and is connected through the pump housing (2) to the pump flange (3) by way of example by screws (16) or rivets.
  11. Pump according to one of the preceding claims characterised in that the pipe flange (14) rests on the pump housing (2) and is fixed to the pump housing by press-fit or adhesive or caulking.
  12. Pump according to one of the preceding claims characterised in that the longitudinal axis of the pipe flange (14) runs parallel to the longitudinal axis of the rotor (10).
EP04702662A 2003-01-17 2004-01-16 Pump Expired - Lifetime EP1588054B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10301622 2003-01-17
DE10301622 2003-01-17
PCT/EP2004/000277 WO2004065795A1 (en) 2003-01-17 2004-01-16 Pump

Publications (2)

Publication Number Publication Date
EP1588054A1 EP1588054A1 (en) 2005-10-26
EP1588054B1 true EP1588054B1 (en) 2011-03-30

Family

ID=32747454

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04702662A Expired - Lifetime EP1588054B1 (en) 2003-01-17 2004-01-16 Pump

Country Status (4)

Country Link
EP (1) EP1588054B1 (en)
AT (1) ATE503931T1 (en)
DE (1) DE502004012345D1 (en)
WO (1) WO2004065795A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004053521A1 (en) * 2004-10-29 2006-05-11 Joma-Hydromechanic Gmbh Wing for a rotor pump
DE112006002803A5 (en) * 2005-11-09 2008-09-04 Ixetic Hückeswagen Gmbh Pump. In particular vane vacuum pump
DE112007001323A5 (en) * 2006-07-01 2009-03-12 Ixetic Hückeswagen Gmbh vacuum pump
DE102008059227B4 (en) 2008-11-20 2021-01-14 Joma-Polytec Gmbh Vacuum pump
WO2010085935A2 (en) 2009-02-02 2010-08-05 Ixetic Hückeswagen Gmbh Vacuum pump housing cover
DE112011101434A5 (en) * 2010-04-26 2013-03-28 Ixetic Hückeswagen Gmbh vacuum pump

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2904686A1 (en) * 1979-02-08 1980-08-14 Volkswagenwerk Ag OIL LUBRICATED VACUUM PUMP WITH AN OIL SEPARATOR ARRANGED IN THE AREA OF YOUR 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.

Also Published As

Publication number Publication date
ATE503931T1 (en) 2011-04-15
WO2004065795A1 (en) 2004-08-05
EP1588054A1 (en) 2005-10-26
DE502004012345D1 (en) 2011-05-12

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