EP1522730A1 - Zahnradpumpe mit integriertem Steuerventil - Google Patents
Zahnradpumpe mit integriertem Steuerventil Download PDFInfo
- Publication number
- EP1522730A1 EP1522730A1 EP03450286A EP03450286A EP1522730A1 EP 1522730 A1 EP1522730 A1 EP 1522730A1 EP 03450286 A EP03450286 A EP 03450286A EP 03450286 A EP03450286 A EP 03450286A EP 1522730 A1 EP1522730 A1 EP 1522730A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- axis
- pump
- rotary piston
- pressure
- control valve
- 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.)
- Granted
Links
Images
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
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/24—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
- F04C14/26—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves using bypass channels
-
- 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
- F04C2/18—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 similar tooth forms
-
- 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
- F04C2/084—Toothed wheels
-
- 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
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/20—Flow
Definitions
- the invention relates to a rotary piston pump, in particular gear pump, with at least one drive shaft connected to a driving first Conveyor wheel and at least one rotatably mounted on an axis, from the first Conveyor driven second conveyor wheel, wherein the conveyor wheels rotatably in Delivery chamber of a pump housing are arranged with a control valve for discharge-side control of a part of the pumped medium.
- Gear pumps with two intermeshing gears have a driven via a drive shaft gear, which is the second gear drives.
- Gear pumps of this type are commonly used for oil pumps used by internal combustion engines.
- Conventional oil pumps are by a rigid, non-variable drive such as chain, gears, timing belt, etc. coupled in a fixed speed ratio with the crankshaft of the engine. As the speed of the engine increases, and the oil pump speed is increased, and thus the delivery rate of the oil pump in relation to the engine speed.
- Oil pumps are generally used in the worst case of oil supply the internal combustion engine over the entire speed field designed, that is the Idling speed with the largest gap cross section in the positions, including all other consumers on the engine, such as pistons, spray nozzle for piston cooling or Turbocharger, etc.
- the object of the invention is, in a rotary piston pump of the aforementioned Art in the simplest and most space-saving way a Abêtn of To allow pumped medium.
- control valve through the Axle is formed, wherein the axis mounted axially displaceable in the pump housing is and makes a control piston.
- the control valve through the axis itself is formed, components and space can be saved.
- the axis essentially as a one-sided closed, a pressure chamber containing Hollow cylinder is formed, wherein the jacket of the hollow cylinder at least one Ab Kunststoffö réelle which, in axial deflection of the axis by a housing-fixed Ab Kunststoffkante is traversable, and wherein the pressure chamber with a Pressure medium can be acted upon.
- the second delivery wheel is rotatable and longitudinally displaceable is stored on the axle.
- the axis can thus unhindered in axial Direction are shifted.
- the axis through the pressure medium against a Restoring force is deflected from a rest position into a deflection position, wherein the restoring force is preferably formed by a compression spring.
- Trained as a gear pump rotary pump 1 has a pump housing 2 with a delivery chamber 20, in which a first and a second impeller 3, 4 are rotatably arranged.
- the conveyor wheels 3, 4 are as intermeshing Gear wheels formed.
- the driving first feed wheel 3 is provided with a drive shaft 5 firmly connected and is driven by this.
- the driven, second gear 4 is rotatably and axially displaceably mounted on the axis 6.
- the axis 6 forms a control valve 7 for the control of the excess amount of conveyed Oil.
- the axis 6 is formed as a hollow cylinder 13 closed on one side, which is mounted axially displaceable in the pump housing 2.
- a pressure chamber 8 which by a pressure medium can be acted upon.
- the inlet for the pressure medium 8 is designated by reference numeral 9.
- the axis 6 is in a bore 10 of the Pump housing 2 mounted axially displaceable.
- the axle 6 has at least an outgoing from the pressure chamber 8 Ab Kunststoffö réelle 11 in the jacket 12 of the hollow cylinder 13, which is arranged so that they move axially the axis 6 can be moved over by a housing-fixed Abberichtkante 14.
- Fig. 1 shows the axis 6 in the undeflected state of rest, which by the Restoring force of the return spring 15 is defined.
- the deflection force according to the Pump pressure of the pressure medium is thus smaller than the restoring force of the Return spring 15.
- the Abêtö réelleen 11 are through the pump housing. 2 locked.
- Fig. 2 shows the axis 6 in the deflected Ab Kunststoffposition.
- the axis 6 is brought by the Abêt réelle p D of the pressure medium 8 against the restoring force of the return spring 15 in the Ab Kunststoffposition, the Ab Kunststoffö réelleen 11 over the Abêtkante 14 of the pump housing 2, whereby the Abêtö réelleen 11 are released.
- the pressure medium 8 can be conveyed through the Abêtö réelleen 11 in a not shown leakage line or back into the not further apparent suction line of the rotary piston pump 1.
- the inlet 9 to the pressure chamber 8 is connected via a connecting channel, not shown with the pressure side of the rotary piston pump 1 in conjunction.
- control piston 7 is formed by the axis 6, the rotary piston pump 1 extremely compact and the number of parts very kept small.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
Description
- Fig. 1
- die erfindungsgemäße Rotationskolbenpumpe mit im Ruhezustand befindlichem Steuerventil und
- Fig. 2
- die Rotationskolbenpumpe mit in Absteuerposition befindlichem Steuerventil.
Claims (6)
- Rotationskolbenpumpe (1), insbesondere Zahnradpumpe, mit zumindest einem mit einer Antriebswelle (5) verbundenen treibenden ersten Förderrad (3) und zumindest einem auf einer Achse (6) drehbar gelagerten, vom ersten Förderrad (3) angetriebenen zweiten Förderrad (4), wobei die Förderräder (3, 4) drehbar im Förderraum (20) eines Pumpengehäuses (2) angeordnet sind, mit einem Steuerventil (7) zur druckseitigen Absteuerung eines Teiles des Fördermediums, dadurch gekennzeichnet, dass das Steuerventil (7) durch die Achse (6) gebildet ist, wobei die Achse (6) im Pumpengehäuse (2) axial verschiebbar gelagert ist und einen Steuerkolben bildet.
- Rotationskolbenpumpe (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Achse (6) im Wesentlichen als einseitig verschlossener, einen Druckraum (8) beinhaltender Hohlzylinder (13) ausgebildet ist, wobei der Mantel (12) des Hohlzylinders (13) zumindest eine Absteueröffnung (11) aufweist, welche bei axialer Auslenkung der Achse (6) durch eine gehäusefeste Absteuerkante (14) überfahrbar ist, und wobei der Druckraum (8) mit einem Druckmedium beaufschlagbar ist.
- Rotationskolbenpumpe (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das zweite Förderrad (4) drehbar und axial verschiebbar auf der Achse (6) gelagert ist.
- Rotationskolbenpumpe (1) nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass das Druckmedium durch das Fördermedium gebildet ist und der Druckraum (8) mit der Pumpendruckseite strömungsverbunden ist.
- Rotationskolbenpumpe (1) nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass die Achse (6) durch das Druckmedium entgegen einer Rückstellkraft aus einer Ruheposition in eine Auslenkposition auslenkbar ist, wobei die Rückstellkraft vorzugsweise durch eine Druckfeder (15) gebildet ist.
- Rotationskolbenpumpe (1) nach Anspruch 5, dadurch gekennzeichnet, dass die Absteueröffnung (11) in der Ruheposition der Achse (6) durch das Pumpengehäuse (2) verschlossen und in der Auslenkposition geöffnet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT15942003A AT413235B (de) | 2003-10-09 | 2003-10-09 | Rotationskolbenpumpe, insbesondere zahnradpumpe |
AT15942003 | 2003-10-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1522730A1 true EP1522730A1 (de) | 2005-04-13 |
EP1522730B1 EP1522730B1 (de) | 2007-11-21 |
Family
ID=34280371
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20030450286 Expired - Lifetime EP1522730B1 (de) | 2003-10-09 | 2003-12-23 | Zahnradpumpe mit integriertem Steuerventil |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1522730B1 (de) |
AT (1) | AT413235B (de) |
DE (1) | DE50308658D1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2452493A (en) * | 2007-09-05 | 2009-03-11 | Bamford Excavators Ltd | Pump with pressure relief in rotor support |
US8691140B2 (en) | 2006-03-08 | 2014-04-08 | Sa Des Eaux Minerales D'evian Saeme | Process for injection molding of thin-walled preform |
CN111173737A (zh) * | 2019-08-30 | 2020-05-19 | 重庆红宇精密工业有限责任公司 | 一种集成式的泵油装置 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1011285B (de) * | 1953-08-11 | 1957-06-27 | Friedmann Kg Alex | Einrichtung zur Regelung der Foerdermenge von Zahnradpumpen |
US2960112A (en) * | 1956-04-05 | 1960-11-15 | Messrs Alex Friedmann Kommandi | Device for the distribution of fluids, particularly of lubricants, to different outlets |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2119294A5 (de) * | 1970-12-24 | 1972-08-04 | Joyeux Jean Pierre | |
DE19631956C2 (de) * | 1996-08-08 | 1998-07-02 | Danfoss As | Zahnradpumpe mit einstellbarem Verdrängungsvolumen |
-
2003
- 2003-10-09 AT AT15942003A patent/AT413235B/de not_active IP Right Cessation
- 2003-12-23 DE DE50308658T patent/DE50308658D1/de not_active Expired - Lifetime
- 2003-12-23 EP EP20030450286 patent/EP1522730B1/de not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1011285B (de) * | 1953-08-11 | 1957-06-27 | Friedmann Kg Alex | Einrichtung zur Regelung der Foerdermenge von Zahnradpumpen |
US2960112A (en) * | 1956-04-05 | 1960-11-15 | Messrs Alex Friedmann Kommandi | Device for the distribution of fluids, particularly of lubricants, to different outlets |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8691140B2 (en) | 2006-03-08 | 2014-04-08 | Sa Des Eaux Minerales D'evian Saeme | Process for injection molding of thin-walled preform |
GB2452493A (en) * | 2007-09-05 | 2009-03-11 | Bamford Excavators Ltd | Pump with pressure relief in rotor support |
EP2034184A3 (de) * | 2007-09-05 | 2012-03-21 | J.C. Bamford Excavators Ltd. | Pumpvorrichtung |
GB2452493B (en) * | 2007-09-05 | 2012-05-23 | Bamford Excavators Ltd | Pumping apparatus |
US8657592B2 (en) | 2007-09-05 | 2014-02-25 | J.C. Bamford Excavators Limited | Pumping apparatus with a hollow shaft acting as a valve |
CN111173737A (zh) * | 2019-08-30 | 2020-05-19 | 重庆红宇精密工业有限责任公司 | 一种集成式的泵油装置 |
Also Published As
Publication number | Publication date |
---|---|
DE50308658D1 (de) | 2008-01-03 |
ATA15942003A (de) | 2005-05-15 |
EP1522730B1 (de) | 2007-11-21 |
AT413235B (de) | 2005-12-15 |
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