DE1242100B - Rotary lobe pump - Google Patents
Rotary lobe pumpInfo
- Publication number
- DE1242100B DE1242100B DEST16163A DEST016163A DE1242100B DE 1242100 B DE1242100 B DE 1242100B DE ST16163 A DEST16163 A DE ST16163A DE ST016163 A DEST016163 A DE ST016163A DE 1242100 B DE1242100 B DE 1242100B
- Authority
- DE
- Germany
- Prior art keywords
- rotor
- pump
- working slide
- groove
- working
- 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.)
- Pending
Links
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
- F04C2/00—Rotary-piston machines or pumps
- F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 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 groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
- F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 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 groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
- F04C2/3441—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 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 groups F04C2/08 or F04C2/22 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Description
BUNDESREPUBLIK DEUTSCHLAND DEUTSCHES Αϊ^ PATENTAMTFEDERAL REPUBLIC OF GERMANY GERMAN Αϊ ^ PATENT OFFICE
Int. Cl.:Int. Cl .:
Deutsche Kl.: 5}Te - German class: 5} Te -
Nummer:
Aktenzeichen:
Anmeldetag:
Auslegetag:Number:
File number:
Registration date:
Display day:
1242100
St 161631 c/59 e
27. Februar 1960
8. Juni 19671242100
St 161631 c / 59 e
February 27, 1960
June 8, 1967
Die Erfindung betrifft eine Drehkolbenpumpe mit einem in einer zylindrischen Pumpenkammer exzentrisch angeordneten, einseitig gelagerten zylindrischen Rotor, der in mindestens einer durch seine Mitte gehenden und zur Rotorstirnseite offenen, mit einer Längsbohrung des Rotors verbundenen Quernut einen radial verschieblichen Arbeitsschieber trägt, der innerhalb der radial äußeren Endbereiche mit einer Ausnehmung versehen ist, die zusammen mit der Quernut einen während der Rotordrehung abwechselnd zur Pumpenkammer sich öffnenden und sich wieder abschließenden Kanal bildet. Eine solche Pumpe hat den Vorteil, daß die zu fördernde Flüssigkeit über die Längsbohrung des Rotors abgeführt werden kann und daher kein Druckstutzen am Umfang der Pumpenkammer anschließen muß.The invention relates to a rotary lobe pump with an eccentric in a cylindrical pump chamber arranged, one-sided mounted cylindrical rotor, which in at least one through its center going and to the rotor front side open, with a longitudinal bore of the rotor connected transverse groove carries a radially displaceable working slide, which within the radially outer end regions with a Recess is provided which, together with the transverse groove, alternates during the rotor rotation to the pump chamber that opens and closes again. Such The pump has the advantage that the liquid to be pumped is discharged through the longitudinal bore of the rotor can be and therefore no pressure connection must connect to the circumference of the pump chamber.
Bei einer bekannten Drehkolbenpumpe dieser Art werden in einer Nut zwei einseitig wirkende Arbeitsschieber verwendet, die im Bereich der Rotorlängsbohrung in ihrer axialen Länge verkürzt sind und eine in Radialrichtung verlaufende, in Drehrichtung offene, kurz vor der radial äußeren Endfläche des Arbeitsschiebers endende Rinne besitzen. Derartige Arbeitsschieber sind wegen ihrer komplizierten Form und wegen ihrer gegenseitigen Passung schwierig in der Herstellung. Es ist auch nicht einfach, die Arbeitsschieber derart auszulegen und einzubauen, daß ein Kurzschluß zwischen Saug- und Druckseite durch die Quernut hindurch vermieden wird.In a known rotary lobe pump of this type, two unidirectional working slides are used in a groove, which are located in the area of the longitudinal rotor bore are shortened in their axial length and one extending in the radial direction, in the direction of rotation have open, just before the radially outer end face of the working slide ending channel. Such Working slides are difficult to get into because of their intricate shape and their mutual fit the production. It is also not easy to design and install the working slide in such a way that a short circuit between suction and pressure side through the transverse groove is avoided.
Der Erfindung liegt die Aufgabe zugrunde, eine Drehkolbenpumpe der genannten Art mit einem möglichst einfachen Aufbau herzustellen, die billiger in der Produktion und sicherer im Betrieb ist.The invention is based on the object of providing a rotary lobe pump of the type mentioned with a possible simple construction that is cheaper to produce and safer to operate.
Die Erfindung ist dadurch gekennzeichnet, daß der (jeder) Arbeitsschieber ein den Rotor diametral durchsetzender, mit seinen radial äußeren Endflächen an der Umfangswand der Pumpenkammer geführter, in einem Längsschnitt durch die Pumpe gesehen U- bzw. C-förmiger einstückiger Körper ist, wobei die beiden, Begrenzungen der Ausnehmung des Arbeitsschiebers bildenden radial inneren Flächen der in ihrer Länge der axialen Länge der Pumpenkammer entsprechenden U-Schenkel zueinander im wesentlichen parallel sind, aber schräg zur Quernut des Rotors stehen, um Leitflächen für das in die Nut einströmende Fördermedium zu bilden.The invention is characterized in that the (each) working slide is diametrically opposite the rotor penetrating, guided with its radially outer end faces on the circumferential wall of the pump chamber, is seen in a longitudinal section through the pump U- or C-shaped one-piece body, wherein the both of the radially inner surfaces of the in their length to the axial length of the pump chamber corresponding U-legs to each other essentially are parallel, but at an angle to the transverse groove of the rotor, in order to create guide surfaces for the flow into the groove Forming medium to be conveyed.
Bei dieser Konstruktion läßt sich der einstückige Arbeitsschieber auf einfache Weise herstellen. Die gegenseitige Anpassung zweier Arbeitsschieber in einer Quernut entfällt. Trotzdem wird die Betriebsweise mit durch die Längsbohrung des Rotors abge-Drehkolbenpumpe With this construction, the one-piece working slide can be produced in a simple manner. the Mutual adjustment of two working slides in a transverse groove is no longer necessary. Nevertheless, the mode of operation with a rotary lobe pump through the longitudinal bore of the rotor
Anmelder:Applicant:
Danfoss-Werk Offenbach G. m. b. H.,Danfoss plant Offenbach G. m. B. H.,
Offenbach/M.Offenbach / M.
Als Erfinder benannt:Named as inventor:
Niels Th. Haldrup, Nordborg (Dänemark)Niels Th. Haldrup, Nordborg (Denmark)
führter gepumpter Flüssigkeit nicht gestört; vielmehr wird sogar der Strömungswiderstand herabgesetzt.conducted pumped liquid not disturbed; rather, the flow resistance is even reduced.
Absolute Sicherheit gegen einen Kurzschluß zwischen Saug- und Druckseite erhält man, wenn der Abstand zwischen den in Drehrichtung vorderen Kanten der schrägen inneren Flächen der U-Schenkel des Arbeitsschiebers gleich oder kleiner als der Durchmesser des Rotors ist.Absolute security against a short circuit between suction and pressure side is obtained when the Distance between the front edges in the direction of rotation of the inclined inner surfaces of the U-legs of the working slide is equal to or smaller than the diameter of the rotor.
Es ist zwar bereits bekannt, daß man mit Hilfe eines einteiligen, in eine Quernut eingesetzten und daher doppeltwirkenden Arbeitsschiebers eine sehr einfache Drehkolbenpumpenkonstruktion erhält.It is already known that you can use a one-piece, inserted into a transverse groove and Therefore, the double-acting working slide receives a very simple rotary lobe pump construction.
Diese Maßnahme wurde jedoch nur in Verbindung mit an die Umfangswand der Pumpenkammer anschließenden Saug- und Druckstutzen verwendet. In diesem Zusammenhang wurden auch schon Arbeitsschieber beschrieben, die bei einem Längschnitt durch ihre radiale Erstreckung U-Querschnitt haben, wobei die U-Schenkel in ihrer Länge der axialen Länge der Pumpenkammer entsprechen. Diese U-Form war aber lediglich bedingt, um zwei derartige Arbeitsschieber unabhängig voneinander in zwei rechtwinklig zueinander stehenden Quernuten verschieben zu können. Erfindungsgemäß dagegen bildet der zwischen den U-Schenkeln liegende Raum des Arbeitsschiebers zusammen mit den Wänden der Quernut einen Förderkanal für die zu pumpende Flüssigkeit.However, this measure was only in connection with subsequent to the peripheral wall of the pump chamber Suction and pressure ports used. In this context, working slide have already been described, which in a longitudinal section through have their radial extension U-cross section, the U-legs in their length being the axial length of the Correspond to the pump chamber. This U-shape was only conditional to two such working slides to be able to move independently of one another in two transverse grooves that are perpendicular to one another. According to the invention, on the other hand, forms the space of the working slide located between the U-legs together with the walls of the transverse groove a conveying channel for the liquid to be pumped.
Bei einem bevorzugten Ausführungsbeispiel kann die Nut ebenso wie der Arbeitsschieber einen solchen, vorzugsweise T-förmigen oder schwalbenschwanzförmigen Querschnitt haben, daß der Arbeitsschieber in axialer Richtung im Rotor festgehalten wird und damit auch eine axiale Verschiebung des Rotors verhindert. Einer derartige Pumpe hat also eine doppelte Funktion, indem sie einerseits Flüssigkeit, z.B. Öl, zu den Schmierstellen einer Achse pumpt und andererseits den Rotor, also z. B. die geschmierte Achse, in axialer Richtung gegen Verschiebung sichert.In a preferred embodiment, the groove, like the working slide, can have such a preferably have a T-shaped or dovetail-shaped cross-section that the working slide is held in the axial direction in the rotor and thus also prevents axial displacement of the rotor. Such a pump has a double function in that on the one hand it supplies liquid, e.g. oil, pumps to the lubrication points of an axle and on the other hand the rotor, so z. B. the lubricated axle, secures against displacement in the axial direction.
Bei Rotoren mit verhältnismäßig kleinem Durchmesser ist es zweckmäßig, wenn die AusnehmungIn rotors with a relatively small diameter, it is useful if the recess
709 589/113709 589/113
Claims (1)
Quernut 3 versehen. Die Stirnfläche steht in dichtend Bei einem bevorzugten Anwendungszweck dient gleitender Berührung mit einem Pumpendeckel 4. die erfindungsgemäße Drehkolbenpumpe als Schmier-The rotor 1 of the pump is eccentric in a dovetail-shaped working slide, the cylindrical pump chamber in a housing 2 45 can be turned in order to prevent the rotor from shifting and to secure it at the free end face with a movement in the axial direction.
Cross groove 3 provided. The end face is in a sealing manner. In a preferred application, sliding contact with a pump cover 4.
ordnet. Seine U-Schenkel 7 und 8 haben eine solcheWorking slide 6 is slidable in the groove - Compressor,
arranges. Its U-legs 7 and 8 have one
strömung dieser Nut verhindern können. DieHeight that they completely fill the groove and a through patent claims:
can prevent flow of this groove. the
Französische Patentschriften Nr. 624711,Considered publications:
French patent specification No. 624711,
USA.-Patentschriften Nr. 1434716, 1952 834,1120279; British Patent No. 119,544;
U.S. Patents Nos. 1434716, 1952 834,
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEST16163A DE1242100B (en) | 1960-02-27 | 1960-02-27 | Rotary lobe pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEST16163A DE1242100B (en) | 1960-02-27 | 1960-02-27 | Rotary lobe pump |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1242100B true DE1242100B (en) | 1967-06-08 |
Family
ID=7456967
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEST16163A Pending DE1242100B (en) | 1960-02-27 | 1960-02-27 | Rotary lobe pump |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1242100B (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2402784A1 (en) * | 1977-09-07 | 1979-04-06 | Bosch Gmbh Robert | CELLULAR VANE COMPRESSOR |
EP1454755A1 (en) * | 2003-03-05 | 2004-09-08 | Brother Kogyo Kabushiki Kaisha | Pump and inkjet printer |
US7360878B2 (en) | 2003-10-31 | 2008-04-22 | Brother Kogyo Kabushiki Kaisha | Inkjet printer and method of controlling the inkjet printer |
WO2009004657A1 (en) * | 2007-07-03 | 2009-01-08 | O.M.P. Officine Mazzocco Pagnoni S.R.L. | Vacuum pump for a motor vehicle engine |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB119544A (en) * | 1917-10-09 | 1918-10-09 | Eustace Frederic Wallis | Improvements in or relating to Rotary Pumps. |
US1434716A (en) * | 1921-03-22 | 1922-11-07 | Philip R Hatton | Rotary pump |
FR624711A (en) * | 1926-11-16 | 1927-07-25 | Improvements to rotary pallet machines | |
US1952834A (en) * | 1932-08-26 | 1934-03-27 | Elliott W Beidler | Pump |
US2462732A (en) * | 1945-10-12 | 1949-02-22 | Cons Vultee Aircraft Corp | Slidable vane pump |
FR1120279A (en) * | 1955-01-24 | 1956-07-03 | Hermetic compressor unit |
-
1960
- 1960-02-27 DE DEST16163A patent/DE1242100B/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB119544A (en) * | 1917-10-09 | 1918-10-09 | Eustace Frederic Wallis | Improvements in or relating to Rotary Pumps. |
US1434716A (en) * | 1921-03-22 | 1922-11-07 | Philip R Hatton | Rotary pump |
FR624711A (en) * | 1926-11-16 | 1927-07-25 | Improvements to rotary pallet machines | |
US1952834A (en) * | 1932-08-26 | 1934-03-27 | Elliott W Beidler | Pump |
US2462732A (en) * | 1945-10-12 | 1949-02-22 | Cons Vultee Aircraft Corp | Slidable vane pump |
FR1120279A (en) * | 1955-01-24 | 1956-07-03 | Hermetic compressor unit |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2402784A1 (en) * | 1977-09-07 | 1979-04-06 | Bosch Gmbh Robert | CELLULAR VANE COMPRESSOR |
US4255100A (en) * | 1977-09-07 | 1981-03-10 | Robert Bosch Gmbh | Rotary compressor with valve in rotor |
EP1454755A1 (en) * | 2003-03-05 | 2004-09-08 | Brother Kogyo Kabushiki Kaisha | Pump and inkjet printer |
US7588432B2 (en) | 2003-03-05 | 2009-09-15 | Brother Kogyo Kabushiki Kaisha | Pump and inkjet printer |
US7360878B2 (en) | 2003-10-31 | 2008-04-22 | Brother Kogyo Kabushiki Kaisha | Inkjet printer and method of controlling the inkjet printer |
US7393090B2 (en) | 2003-10-31 | 2008-07-01 | Brother Kogyo Kabushiki Kaisha | Inkjet printer and method of controlling the inkjet printer |
WO2009004657A1 (en) * | 2007-07-03 | 2009-01-08 | O.M.P. Officine Mazzocco Pagnoni S.R.L. | Vacuum pump for a motor vehicle engine |
CN101765701B (en) * | 2007-07-03 | 2013-07-10 | O·M·P·奥菲奇内·马佐科·帕尼奥尼有限公司 | Vacuum pump for a motor vehicle engine |
US9670928B2 (en) | 2007-07-03 | 2017-06-06 | O.M.P. Officine Mazzocco Pagnoni, S.R.L. | Vacuum pump for a motor vehicle engine |
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