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WO2000057062A1 - Pump for generating pressure or negative pressure - Google Patents

Pump for generating pressure or negative pressure Download PDF

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Publication number
WO2000057062A1
WO2000057062A1 PCT/EP2000/002536 EP0002536W WO0057062A1 WO 2000057062 A1 WO2000057062 A1 WO 2000057062A1 EP 0002536 W EP0002536 W EP 0002536W WO 0057062 A1 WO0057062 A1 WO 0057062A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing cover
pump according
pump
pressure
rotors
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.)
Ceased
Application number
PCT/EP2000/002536
Other languages
German (de)
French (fr)
Other versions
WO2000057062B1 (en
Inventor
Fritz-Martin Scholz
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.)
Rietschle Werner GmbH and Co KG
Werner Rietschle GmbH and Co KG
Original Assignee
Rietschle Werner GmbH and Co KG
Werner Rietschle GmbH and 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 Rietschle Werner GmbH and Co KG, Werner Rietschle GmbH and Co KG filed Critical Rietschle Werner GmbH and Co KG
Priority to HK03100973.8A priority Critical patent/HK1048844B/en
Priority to AT00918828T priority patent/ATE260412T1/en
Priority to JP2000606903A priority patent/JP2002540346A/en
Priority to AU39635/00A priority patent/AU762304B2/en
Priority to EP00918828A priority patent/EP1163450B1/en
Priority to DE50005415T priority patent/DE50005415D1/en
Publication of WO2000057062A1 publication Critical patent/WO2000057062A1/en
Publication of WO2000057062B1 publication Critical patent/WO2000057062B1/en
Anticipated expiration legal-status Critical
Ceased 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • 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
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/086—Carter
    • 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
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C2/16—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • 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

Definitions

  • the invention relates to a pump for generating pressure or negative pressure, with a pump chamber which has a high-pressure connection and a low-pressure connection, two at least two-bladed rotors, which are mounted in the pump chamber about parallel, mutually offset axes, one on one end face of the rotors arranged drive and a housing cover arranged on the opposite side.
  • the rotors are on both sides, i.e. on each of the two axle ends.
  • the pump chamber is delimited on both ends by a housing cover.
  • Suction channel and pressure channel are arranged in one of the two housing covers or in both covers.
  • the housing cover is pot-shaped; the high pressure connection and the low pressure connection are integrated in the housing cover.
  • a single component, the housing cover therefore has three functions: the frontal limitation of the pump chamber, the peripheral wall of the pump chamber and the reception of the connection channels.
  • the housing cover can be efficiently manufactured as a cast or molded part.
  • the rotors are supported on one side on the side facing the drive.
  • the elimination of the two bearings on the side of the housing cover further simplifies the construction of the pump, which enables additional savings in material, weight and assembly costs.
  • space is saved in the area of the free axle ends, which can be used for the arrangement of the channels in the housing cover. It is therefore possible to optimize the geometry of the channels integrated in the housing cover with regard to the connection and flow conditions.
  • Figure 1 is a side view of a pump unit, which is shown axially sectioned in the region of the pump part;
  • Figure 2 is a side view of a housing cover
  • Figure 3 is a plan view of the housing cover
  • FIG. 4 shows a further side view of the housing cover
  • Figure 5 is a plan view of the inside of the housing cover.
  • FIG. 6 shows a section along line VI-VI in FIG.
  • the pump unit shown in FIG. 1 has an electric motor 10 as the drive. This is flanged to the side of a fan hood 12.
  • the electric motor 10 is connected to a fan wheel 16 within the fan hood 12 via a coupling 14.
  • the fan cover 12 is attached to a gear housing 18.
  • two mutually parallel, mutually offset shafts 20, 22 are supported at one end.
  • the shaft 20 is aligned with the axis of the electric motor 10 and is driven directly by it.
  • On the shaft 20 there is a first spur gear 24, which meshes with a second spur gear 26 located on the shaft 22.
  • a double-bladed rotor 28, 30 is seated on the unsupported ends of the shafts 20, 22 facing away from the gearbox 18.
  • the blades of the rotors 28, 30 are claw-shaped and their geometry is designed for internal compression.
  • the shafts 20, 22 are mounted in the gear housing 18 on both sides of the gears 24, 26 on ball bearings, in particular on double-row angular contact ball bearings, as can be seen in FIG. 1. This provides the shafts 20, 22 with reliable guidance and support with regard to the flying mounting of the rotors.
  • the gear housing 18 With its surface facing the rotors 28, 30, the gear housing 18 forms an end boundary wall of a pump chamber 32, which is otherwise bounded by a cup-shaped housing cover 34 attached to the gear housing 18. With its flat inner wall, the housing cover 34 delimits the pump chamber 32 on the side facing away from the gear housing 18 and forms the circumferential wall of the pump chamber 32 with its jacket.
  • channels are integrated, which form the high-pressure connection and the low-pressure connection of the pump.
  • the configuration of these channels and connections can be seen from FIGS. 2 to 6.
  • bulges 36, 38 are formed on the end face of the housing cover 34, by means of which outer boundary walls of two channels 40, 42 integrated in the housing cover are realized.
  • two openings 46, 48 are formed in the flat inner wall 44 of the Housing cover 34.
  • the channel 40 extends from the opening 46.
  • This channel 40 has a first channel section which runs parallel to the inner wall 44, an adjoining channel section which is inclined obliquely to the drive side and outwards, and an adjoining channel section which runs outwards and parallel to the inner wall 44 and which runs on the circumference of the housing cover 34 opens into a connecting flange 50.
  • the opening 42 is adjoined by the passage 42, which likewise has a first passage section parallel to the inner wall 44, an adjoining passage section which is inclined outwardly at an angle to the drive side, and a passage section which is in turn parallel to the inner wall 44 and which is in one at the circumference of the housing cover 34
  • Connection flange 52 opens.
  • the connecting flanges 50, 52 are on different sides of the housing cover facing away from each other at different heights.
  • the channels 40, 42 can be designed with regard to optimal flow conditions and favorable connection conditions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Saccharide Compounds (AREA)

Abstract

The invention relates to a pump for generating pressure or negative pressure, comprising a chamber having a high pressure branch and a low pressure branch. Two multi-bladed rotors (28, 30) are mounted on two shafts (20, 22) that are staggered relative to one another in the pump chamber (32). A drive mechanism is minted on the front face of the rotors and a housing lid is placed on the opposite side of said rotors. The housing lid (34) is pot-shaped. Both the high pressure branch (42) and the low pressure branch (40) are integrated into the housing lid (34).

Description

Pumpe zur Erzeugung von Druck oder Unterdruck Pump for generating pressure or negative pressure

Die Erfindung betrifft eine Pumpe zur Erzeugung von Druck oder Unterdruck, mit einer Pumpenkammer, die einen Hochdruck-Anschluß und einen Niederdruck-Anschluß aufweist, zwei wenigstens zweiflügeligen Rotoren, die um parallele, gegeneinander versetzte Achsen in der Pumpenkammer gelagert sind, einem auf einer Stirnseite der Rotoren angeordneten Antrieb und einem auf der gegenüberliegenden Seite angeordneten Gehäusedeckel .The invention relates to a pump for generating pressure or negative pressure, with a pump chamber which has a high-pressure connection and a low-pressure connection, two at least two-bladed rotors, which are mounted in the pump chamber about parallel, mutually offset axes, one on one end face of the rotors arranged drive and a housing cover arranged on the opposite side.

Bei Pumpen dieser Bauart greifen die Flügel der Rotoren berührungslos ineinander, so daß ein schmiermittelfreier Betrieb möglich ist. Die Einsatzbereiche für derartige Pumpen sind daher vielfältig. Wegen der vielfältigen Einsatzmöglichkeiten dieser Pumpen wird eine Optimierung hinsichtlich Baugröße, Gewicht und Herstellungskosten angestrebt .In pumps of this type, the blades of the rotors interlock without contact, so that lubricant-free operation is possible. The areas of application for such pumps are therefore diverse. Because of the wide range of possible uses of these pumps, optimization with regard to size, weight and manufacturing costs is sought.

Bei den bekannten Pumpen dieser Bauform sind die Rotoren beidseitig, d.h. an jedem der beiden Achsenden, gelagert. Die Pumpenkammer wird auf beiden Stirnseiten durch einen Gehäusedeckel begrenzt. Saugkanal und Druckkanal sind in einem der beiden Gehäusedeckel oder in beiden Deckeln angeordnet .In the known pumps of this design, the rotors are on both sides, i.e. on each of the two axle ends. The pump chamber is delimited on both ends by a housing cover. Suction channel and pressure channel are arranged in one of the two housing covers or in both covers.

Mit der vorliegenden Erfindung wird angestrebt, den Aufbau der Pumpe zu vereinfachen, um so den Aufwand bei Herstellung und Montage zu vermindern. Gemäß der Erfindung ist der Gehäusedeckel topfformig ausgebildet; der Hochdruck-Anschluß wie auch der Niederdruck-Anschluß sind im Gehäusedeckel integriert. Ein einziges Bauteil, der Gehäusedeckel, hat somit drei Funktionen: Die stirnseitige Begrenzung der Pumpenkammer, die Umfangswand der Pumpenkammer und die Aufnahme der Anschlußkanäle. Der Gehäusedeckel kann rationell als Guß- oder Formteil hergestellt werden. In besonders vorteilhafter Weiterbildung der Erfindung sind die Rotoren einseitig auf der dem Antrieb zugewandten Seite gelagert. Durch das Entfallen der beiden Lager auf der Seite des Gehäusedeckels wird der Aufbau der Pumpe weiter vereinfacht, wodurch zusätzliche Einsparungen an Material, Gewicht und Montageaufwand möglich sind. Darüber hinaus wird im Bereich der freien Achsenden Bauraum eingespart, der für die Anordnung der Kanäle im Gehäusedeckel genutzt werden kann. Es ist daher möglich, die Geometrie der in den Gehäusedeckel integrierten Kanäle im Hinblick auf die Anschluß- und Strömungsverhältnisse zu optimieren.The present invention seeks to simplify the construction of the pump so as to reduce the effort involved in manufacture and assembly. According to the invention, the housing cover is pot-shaped; the high pressure connection and the low pressure connection are integrated in the housing cover. A single component, the housing cover, therefore has three functions: the frontal limitation of the pump chamber, the peripheral wall of the pump chamber and the reception of the connection channels. The housing cover can be efficiently manufactured as a cast or molded part. In a particularly advantageous development of the invention, the rotors are supported on one side on the side facing the drive. The elimination of the two bearings on the side of the housing cover further simplifies the construction of the pump, which enables additional savings in material, weight and assembly costs. In addition, space is saved in the area of the free axle ends, which can be used for the arrangement of the channels in the housing cover. It is therefore possible to optimize the geometry of the channels integrated in the housing cover with regard to the connection and flow conditions.

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der folgenden Beschreibung einer vorteilhaften Ausführungsform und aus der Zeichnung, auf die Bezug genommen wird. In der Zeichnung zeigen:Further features and advantages of the invention result from the following description of an advantageous embodiment and from the drawing, to which reference is made. The drawing shows:

Figur 1 eine Seitenansicht eines Pumpenaggregats, das im Bereich des Pumpenteils axial geschnitten dargestellt ist;Figure 1 is a side view of a pump unit, which is shown axially sectioned in the region of the pump part;

Figur 2 eine Seitenansicht eines Gehäusedeckels;Figure 2 is a side view of a housing cover;

Figur 3 eine Draufsicht des Gehäusedeckels;Figure 3 is a plan view of the housing cover;

Figur 4 eine weitere Seitenansicht des Gehäusedeckels;FIG. 4 shows a further side view of the housing cover;

Figur 5 eine Draufsicht auf die Innenseite des Gehäusedeckels; undFigure 5 is a plan view of the inside of the housing cover; and

Figur 6 einen Schnitt entlang Linie VI-VI in Figur 5.6 shows a section along line VI-VI in FIG.

Das in Figur 1 gezeigte Pumpenaggregat besitzt als Antrieb einen Elektromotor 10. Dieser ist seitlich an eine Ventilatorhaube 12 angeflanscht. Über eine Kupplung 14 ist der Elektromotor 10 an ein Ventilatorrad 16 innerhalb der Ventilatorhaube 12 angeschlossen. Die Ventilatorhaube 12 ist an ein Getriebegehäuse 18 angesetzt. In dem Getriebegehäuse 18 sind zwei zueinander parallele, gegeneinander versetzte Wellen 20, 22 an je einem Ende gelagert. Die Welle 20 ist mit der Achse des Elektromotors 10 fluchtend angeordnet und wird von diesem direkt angetrieben. Auf der Welle 20 sitzt ein erstes, stirnverzahntes Zahnrad 24, das mit einem zweiten, auf der Welle 22 sitzenden stirnverzahnten Zahnrad 26 in Kämmeingriff steht.The pump unit shown in FIG. 1 has an electric motor 10 as the drive. This is flanged to the side of a fan hood 12. The electric motor 10 is connected to a fan wheel 16 within the fan hood 12 via a coupling 14. The fan cover 12 is attached to a gear housing 18. In the gearbox 18, two mutually parallel, mutually offset shafts 20, 22 are supported at one end. The shaft 20 is aligned with the axis of the electric motor 10 and is driven directly by it. On the shaft 20 there is a first spur gear 24, which meshes with a second spur gear 26 located on the shaft 22.

Auf den vom Getriebegehäuse 18 abgewandten, ungelagerten Enden der Wellen 20, 22 sitzt je ein zweiflügeliger Rotor 28, 30. Die Flügel der Rotoren 28, 30 sind klauenförmig und in ihrer Geometrie für eine innere Verdichtung ausgelegt. Die Wellen 20, 22 sind in dem Getriebegehäuse 18 beiderseits der Zahnräder 24, 26 auf Kugellagern gelagert, insbesondere auf zweireihigen Schrägkugellagern, wie aus Figur 1 ersichtlich. Dadurch erhalten die Wellen 20, 22 eine sichere Führung und AbStützung im Hinblick auf die fliegende Lagerung der Rotoren.A double-bladed rotor 28, 30 is seated on the unsupported ends of the shafts 20, 22 facing away from the gearbox 18. The blades of the rotors 28, 30 are claw-shaped and their geometry is designed for internal compression. The shafts 20, 22 are mounted in the gear housing 18 on both sides of the gears 24, 26 on ball bearings, in particular on double-row angular contact ball bearings, as can be seen in FIG. 1. This provides the shafts 20, 22 with reliable guidance and support with regard to the flying mounting of the rotors.

Das Getriebegehäuse 18 bildet mit seiner den Rotoren 28, 30 zugewandten Fläche eine stirnseitige Begrenzungswand einer Pumpenkammer 32, die im übrigen durch einen an das Getriebegehäuse 18 angesetzten, topfförmigen Gehäusedeckel 34 begrenzt wird. Der Gehäusedeckel 34 begrenzt mit seiner ebenen Innenwand die Pumpenkammer 32 auf der vom Getriebegehäuse 18 abgewandten Seite und bildet mit seinem Mantel die Umfangswandung der Pumpenkammer 32.With its surface facing the rotors 28, 30, the gear housing 18 forms an end boundary wall of a pump chamber 32, which is otherwise bounded by a cup-shaped housing cover 34 attached to the gear housing 18. With its flat inner wall, the housing cover 34 delimits the pump chamber 32 on the side facing away from the gear housing 18 and forms the circumferential wall of the pump chamber 32 with its jacket.

In den Gehäusedeckel 34 sind Kanäle integriert, die den Hochdruck-Anschluß und den Niederdruck-Anschluß der Pumpe bilden. Die Ausgestaltung dieser Kanäle und Anschlüsse ist aus den Figuren 2 bis 6 ersichtlich.In the housing cover 34 channels are integrated, which form the high-pressure connection and the low-pressure connection of the pump. The configuration of these channels and connections can be seen from FIGS. 2 to 6.

Wie insbesondere aus den Figuren 2 bis 6 ersichtlich ist, sind an der Stirnfläche des Gehäusedeckels 34 Ausbuchtungen 36, 38 gebildet, durch die äußere Begrenzungswandungen von zwei in den Gehäusedeckel integrierten Kanälen 40, 42 verwirklicht sind. In der ebenen Innenwand 44 des Gehäusedeckels 34 sind zwei Durchbrüche 46, 48 gebildet. Von dem Durchbruch 46 geht der Kanal 40 aus. Dieser Kanal 40 hat einen ersten Kanalabschnitt , der parallel zur Innenwand 44 verläuft, einen daran anschließenden Kanalabschnitt, der schräg zur Antriebsseite hin und auswärts geneigt ist, sowie einen an diesen anschließenden, auswärts und parallel zur Innenwand 44 verlaufenden Kanalabschnitt, der am Umfang des Gehäusedeckels 34 in einem Anschlußflansch 50 mündet. An den Durchbruch 48 schließt der Kanal 42 an, der gleichfalls einen ersten, zur Innenwand 44 parallelen Kanalabschnitt, einen daran anschließenden, auswärts schräg zur Antriebsseite hin geneigten Kanalabschnitt sowie einen wiederum zur Innenwand 44 parallelen Kanalabschnitt aufweist, der am Umfang des Gehäusedeckels 34 in einem Anschlußflansch 52 mündet. Die Anschlußflansche 50, 52 liegen auf voneinander abgewandten Seiten des Gehäusedeckels auf unterschiedlicher Höhe.As can be seen in particular from FIGS. 2 to 6, bulges 36, 38 are formed on the end face of the housing cover 34, by means of which outer boundary walls of two channels 40, 42 integrated in the housing cover are realized. In the flat inner wall 44 of the Housing cover 34, two openings 46, 48 are formed. The channel 40 extends from the opening 46. This channel 40 has a first channel section which runs parallel to the inner wall 44, an adjoining channel section which is inclined obliquely to the drive side and outwards, and an adjoining channel section which runs outwards and parallel to the inner wall 44 and which runs on the circumference of the housing cover 34 opens into a connecting flange 50. The opening 42 is adjoined by the passage 42, which likewise has a first passage section parallel to the inner wall 44, an adjoining passage section which is inclined outwardly at an angle to the drive side, and a passage section which is in turn parallel to the inner wall 44 and which is in one at the circumference of the housing cover 34 Connection flange 52 opens. The connecting flanges 50, 52 are on different sides of the housing cover facing away from each other at different heights.

Durch die fliegende Lagerung der Rotoren 28, 30 bleibt im Bereich der freien Enden der Wellen 22, 24 Bauraum für eine optimale Gestaltung der Kanäle 40, 42 verfügbar. Insbesondere können die Kanäle 40, 42 im Hinblick auf optimale Strömungsverhältnisse und günstige Anschlußverhältnisse ausgelegt werden. Due to the flying mounting of the rotors 28, 30, there is space in the area of the free ends of the shafts 22, 24 for an optimal design of the channels 40, 42. In particular, the channels 40, 42 can be designed with regard to optimal flow conditions and favorable connection conditions.

Claims

Patentansprüche claims 1. Pumpe zur Erzeugung von Druck oder Unterdruck, mit einer Pumpenkammer, die einen Hochdruck-Anschluß und einen Niederdruck-Anschluß aufweist, zwei wenigstens zweiflügeligen Rotoren (28, 30), die auf zwei parallelen, gegeneinander versetzten Wellen (20, 22) in der Pumpenkammer (32) angebracht sind, einem auf einer Stirnseite der Rotoren angeordneten Antrieb und einem auf der gegenüberliegenden Seite angeordneten Gehauseeckel, dadurch gekennzeichnet, daß der Gehäusedeckel (34) topfformig ausgebildet ist und der Hochdruck-Anschluß (42) wie auch der Niederdruck-Anschluß (40) im Gehäusedeckel (34) integriert sind.1. Pump for generating pressure or negative pressure, with a pump chamber which has a high-pressure connection and a low-pressure connection, two at least two-bladed rotors (28, 30) which on two parallel, mutually offset shafts (20, 22) in the pump chamber (32), a drive arranged on one end of the rotors and a housing cover arranged on the opposite side, characterized in that the housing cover (34) is pot-shaped and the high-pressure connection (42) as well as the low-pressure Connection (40) in the housing cover (34) are integrated. 2. Pumpe nach Anspruch 1, dadurch gekennzeichnet, daß zumindest ein wesentlicher Teil der Umfangswandung der Pumpenkammer (32) durch den Mantel des Gehäusedeckels (34) gebildet ist.2. Pump according to claim 1, characterized in that at least a substantial part of the peripheral wall of the pump chamber (32) is formed by the casing of the housing cover (34). 3. Pumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Wellen (20, 22) einseitig auf der dem Antrieb (10) zugewandten Seite gelagert sind.3. Pump according to claim 1 or 2, characterized in that the shafts (20, 22) are mounted on one side on the side facing the drive (10). 4. Pumpe nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß der Gehäusedeckel (34) in seiner die Pumpenkammer (32) stirnseitig begrenzenden Innenwand zwei Durchbrüche (46, 48) für den Hochdruck- und für den Niederdruck-Anschluß aufweist.4. Pump according to one of the preceding claims, characterized in that the housing cover (34) in its the pump chamber (32) delimiting inner wall has two openings (46, 48) for the high pressure and for the low pressure connection. 5. Pumpe nach Anspruch 4, dadurch gekennzeichnet, daß an jeden der Durchbrüche (46, 48) ein im Körper des Gehäusedeckels (34) integrierter Kanal (40, 42) anschließt. 5. Pump according to claim 4, characterized in that at each of the openings (46, 48) in the body of the housing cover (34) integrated channel (40, 42) connects. 6. Pumpe nach Anspruch 4, dadurch gekennzeichnet, daß wenigstens einer der Kanäle (40, 42) zum Umfang des Gehäusedeckels (34) geführt ist und dort mündet.6. Pump according to claim 4, characterized in that at least one of the channels (40, 42) is guided to the circumference of the housing cover (34) and opens there. 7. Pumpe nach Anspruch 6, dadurch gekennzeichnet, daß der Kanal (40, 42) einen parallel zu der Innenwand (44) des Gehäusedeckels verlaufenden ersten Kanalabschnitt, daran anschließend einen schräg in Richtung von der Innenwand fort und auswärts geneigten Kanalabschnitt sowie daran anschließend einen am Umfang des Gehäusedeckels (34) mündenden, zu dessen Innenwand parallelen Kanalabschnitt aufweist .7. Pump according to claim 6, characterized in that the channel (40, 42) a parallel to the inner wall (44) of the housing cover extending first channel section, then an inclined in the direction from the inner wall and outward inclined channel section and then one at the periphery of the housing cover (34) opening, to the inner wall parallel channel section. 8. Pumpe nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß am Umfang des Gehäusedeckels (34) auf zwei voneinander abgewandten Seiten desselben zwei Anschlußflansche (50, 52) gebildet sind.8. Pump according to one of the preceding claims, characterized in that two connecting flanges (50, 52) are formed on the circumference of the housing cover (34) on two sides thereof facing away from one another. 9. Pumpe nach Anspruch 8, dadurch gekennzeichnet, daß die Anschlußflansche (50, 52) vertikal gegeneinander versetzt sind.9. Pump according to claim 8, characterized in that the connecting flanges (50, 52) are vertically offset from one another. 10. Pumpe nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die Flügelgeometrie der Rotoren (28, 30) für eine innere Verdichtung ausgelegt ist.10. Pump according to one of the preceding claims, characterized in that the wing geometry of the rotors (28, 30) is designed for internal compression. 11. Pumpe nach einem der Ansprüche 3 bis 10, dadurch gekennzeichnet, daß die Wellen (20, 22) jeweils beiderseits eines Zahnrades (24, 26) gelagert sind. 11. Pump according to one of claims 3 to 10, characterized in that the shafts (20, 22) are each mounted on both sides of a gear (24, 26).
PCT/EP2000/002536 1999-03-22 2000-03-22 Pump for generating pressure or negative pressure Ceased WO2000057062A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
HK03100973.8A HK1048844B (en) 1999-03-22 2000-03-22 Pump for generating pressure or negative pressure
AT00918828T ATE260412T1 (en) 1999-03-22 2000-03-22 PUMP FOR GENERATING PRESSURE OR VACUUM PRESSURE
JP2000606903A JP2002540346A (en) 1999-03-22 2000-03-22 Pumps that generate positive or negative pressure
AU39635/00A AU762304B2 (en) 1999-03-22 2000-03-22 Pump for generating pressure or negative pressure
EP00918828A EP1163450B1 (en) 1999-03-22 2000-03-22 Pump for generating pressure or negative pressure
DE50005415T DE50005415D1 (en) 1999-03-22 2000-03-22 PUMP FOR PRODUCING PRESSURE OR VACUUM

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29905249.4 1999-03-22
DE29905249U DE29905249U1 (en) 1999-03-22 1999-03-22 Pump for generating pressure and negative pressure

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US10/305,352 Continuation-In-Part US6729863B2 (en) 1999-03-22 2002-11-27 Rotary pump having high and low pressure ports in the housing cover

Publications (2)

Publication Number Publication Date
WO2000057062A1 true WO2000057062A1 (en) 2000-09-28
WO2000057062B1 WO2000057062B1 (en) 2000-12-07

Family

ID=8071227

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2000/002536 Ceased WO2000057062A1 (en) 1999-03-22 2000-03-22 Pump for generating pressure or negative pressure

Country Status (8)

Country Link
EP (1) EP1163450B1 (en)
JP (1) JP2002540346A (en)
KR (1) KR100681804B1 (en)
CN (1) CN1324239C (en)
AT (1) ATE260412T1 (en)
AU (1) AU762304B2 (en)
DE (2) DE29905249U1 (en)
WO (1) WO2000057062A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006071003A1 (en) * 2004-12-28 2006-07-06 Ki Chun Lee The rotary pump and multiple rotary pump employed thereof
US7128543B2 (en) 2002-10-25 2006-10-31 Rietschle Thomas Schopfheim, Gmbh Compressor machine with two counter-rotating rotors

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4057375A (en) * 1976-10-22 1977-11-08 Nachtrieb Paul W Pump structure
EP0048095A1 (en) * 1980-09-05 1982-03-24 British Nuclear Fuels PLC Pump for heavy gases
GB2101687A (en) * 1981-07-15 1983-01-19 British Oxygen Co Ltd Rotary pumping apparatus
GB2139287A (en) * 1983-05-05 1984-11-07 Dana Corp Gear-type rotary hydraulic machine
EP0389838A2 (en) * 1989-03-30 1990-10-03 Inoxpa, S.A. Housing for rotary pump

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4588358A (en) 1984-07-02 1986-05-13 Werner Rietschle Maschinen-Und Apparatebau Gmbh Rotary vane evacuating pump
US5207568A (en) 1991-05-15 1993-05-04 Vilter Manufacturing Corporation Rotary screw compressor and method for providing thrust bearing force compensation
US5772418A (en) 1995-04-07 1998-06-30 Tochigi Fuji Sangyo Kabushiki Kaisha Screw type compressor rotor, rotor casting core and method of manufacturing the rotor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4057375A (en) * 1976-10-22 1977-11-08 Nachtrieb Paul W Pump structure
EP0048095A1 (en) * 1980-09-05 1982-03-24 British Nuclear Fuels PLC Pump for heavy gases
GB2101687A (en) * 1981-07-15 1983-01-19 British Oxygen Co Ltd Rotary pumping apparatus
GB2139287A (en) * 1983-05-05 1984-11-07 Dana Corp Gear-type rotary hydraulic machine
EP0389838A2 (en) * 1989-03-30 1990-10-03 Inoxpa, S.A. Housing for rotary pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7128543B2 (en) 2002-10-25 2006-10-31 Rietschle Thomas Schopfheim, Gmbh Compressor machine with two counter-rotating rotors
WO2006071003A1 (en) * 2004-12-28 2006-07-06 Ki Chun Lee The rotary pump and multiple rotary pump employed thereof

Also Published As

Publication number Publication date
DE50005415D1 (en) 2004-04-01
HK1048844A1 (en) 2003-04-17
WO2000057062B1 (en) 2000-12-07
EP1163450B1 (en) 2004-02-25
KR20020019892A (en) 2002-03-13
ATE260412T1 (en) 2004-03-15
CN1324239C (en) 2007-07-04
KR100681804B1 (en) 2007-02-15
CN1365432A (en) 2002-08-21
JP2002540346A (en) 2002-11-26
AU3963500A (en) 2000-10-09
DE29905249U1 (en) 1999-12-30
EP1163450A1 (en) 2001-12-19
AU762304B2 (en) 2003-06-19

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