EP0708245B1 - Zahnradpumpe - Google Patents
Zahnradpumpe Download PDFInfo
- Publication number
- EP0708245B1 EP0708245B1 EP95115849A EP95115849A EP0708245B1 EP 0708245 B1 EP0708245 B1 EP 0708245B1 EP 95115849 A EP95115849 A EP 95115849A EP 95115849 A EP95115849 A EP 95115849A EP 0708245 B1 EP0708245 B1 EP 0708245B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gear
- gear pump
- piston head
- piston
- area
- 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
Links
- 239000007788 liquid Substances 0.000 description 12
- 239000012528 membrane Substances 0.000 description 5
- 239000006260 foam Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
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
- F04C14/265—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 being obtained by displacing a lateral sealing face
Definitions
- the invention relates to a gear pump, preferably an external gear pump consisting of at least two combing, counter-rotating, mounted in a housing Gears, one of which is a gear with a drive connected is.
- Gear pumps are suitable for sufficient delivery accuracy for many hydraulic drives.
- they will often as lubricating oil pumps in internal combustion engines used.
- the oil pressure generated by the gear pump cools piston crowns, lubricates and cools the piston raceway, Main and connecting rod bearings and rocker arm and supplies the Camshaft bearings.
- the promotion of the liquid comes in that these are released into the Tooth gaps of meshing gears occurs, in the direction of rotation on the outside of the casing Pressure zone moves and through the mutual intervention the teeth are pushed out of the gaps into the pressure chamber becomes.
- the document FR 2 392 255 describes a rotor pump, a deformable one opposite the front of the rotors Rubber membrane is arranged, which at the same time that of Drive side forms opposite side wall and where with increasing pressure the distance between the membrane and the rotors enlarged.
- the membrane is thicker in the middle than on the edges, which affects the deformation profile affects; for rapid wear of the membrane material To avoid, there must be a permanent distance even in the basic state between the membrane and the front of the rotors can be set.
- the gears (4, 5) opposite axial Pump housing wall (7) is coaxial with that Gear (5) through hole (8), the Area similar to the area of the tip circle of the teeth of the Gear (5) is.
- the Pump housing wall (7) is in front of the through hole (8) connected to the pump housing wall (7) Hollow cylinder (9) arranged coaxially. The inside diameter of the hollow cylinder (9) agrees with the diameter of the Through hole (8).
- a hollow cylinder Piston (10) slidably supported, in the basic state whose piston crown (11) on the front of the Gear (5) is present. Since the area of the Piston plate (11) similar to the area of the tip circle of the Teeth of the gear (5) is the end face completely covered. Between the inside of the Piston crown (11) and the inside of the Hollow cylinder (9) is a cylindrical one Helical compression spring (12) used by their Spring force of the face of the gear (5) completely covering piston head (11) in axial Direction pressed against the front of the gear (5) becomes.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Description
- Fig. 1
- eine räumliche Darstellung der Bauelemente der Zahnradpumpe und
- Fig. 2
- eine räumliche Darstellung der Zahnradpumpe mit einem Ausbruch.
Claims (5)
- Zahnradpumpe, bestehend aus mindestens zwei kämmenden, gegenläufigen, in einem Gehäuse (3) gelagerten Zahnrädern (4, 5), von denen ein Zahnrad mit einem Antrieb verbunden ist, gekennzeichnet durch einen, mit der, der Antriebseite gegenüberliegenden Seitenwand (7) der Zahnradpumpe (1) verbundenen, axial auf der Außenseite des Gehäuses (3), vor einem Durchgangsloch (8) der Seitenwand angeordneten Hohlzylinder (9), in dessen Bohrung ein hohlzylinderförmiger Kolben (10) axial verschieblich gelagert ist, dessen Kolbenboden (11) im Grundzustand an der Stirnseite der Zahnräder (4, 5) anliegt, wobei der Kolbenboden (11) die Stirnseite wenigstens eines der Zahnräder (5) vollständig abdeckt.
- Zahnradpumpe nach Anspruch 1, dadurch gekennzeichnet, daß die Mittelpunkte von Kolbenboden (11) und Kopfkreis der Zähne des Zahnrades (5) auf einer Achse liegen, und daß die Fläche des Kolbenbodens (11) ähnlich der Fläche des Kopfkreises der Zähne des Zahnrads (5) ist.
- Zahnradpumpe nach Anspruch 1, dadurch gekennzeichnet, daß die Fläche des Kolbenbodens (11) ähnlich der Fläche der Umhüllenden der Kopfkreise der Zähne der Zahnräder (4, 5) ist und die Stirnseiten der Zahnräder (4, 5) vollständig abgedeckt sind.
- Zahnradpumpe nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß zwischen der Innenseite des Kolbenbodens (11) und der Innenseite des Zylinderdeckels ein Federelement (12) mit durch Federspannung vorgegebenem Drucksollwert eingesetzt ist.
- Zahnradpumpe nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Kolben (10) hydraulisch verschieblich ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4436518 | 1994-10-13 | ||
| DE4436518A DE4436518A1 (de) | 1994-10-13 | 1994-10-13 | Zahnradpumpe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0708245A1 EP0708245A1 (de) | 1996-04-24 |
| EP0708245B1 true EP0708245B1 (de) | 2001-08-16 |
Family
ID=6530622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95115849A Expired - Lifetime EP0708245B1 (de) | 1994-10-13 | 1995-10-09 | Zahnradpumpe |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0708245B1 (de) |
| DE (2) | DE4436518A1 (de) |
| ES (1) | ES2161815T3 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103026068B (zh) | 2010-06-14 | 2016-04-27 | 舍弗勒技术股份两合公司 | 外齿轮泵 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB722667A (en) * | 1952-02-01 | 1955-01-26 | Zenith Carburateur Soc Du | Improvements in or relating to gear pumps and applications thereof |
| US2786553A (en) * | 1954-01-11 | 1957-03-26 | Wilford E Beattie | Fluid pressure controlled gear brake |
| CH476212A (de) * | 1966-06-24 | 1969-07-31 | Schindler Werner | Verdrängungspumpe |
| FR2054775A6 (de) * | 1969-07-25 | 1971-05-07 | Bertin & Cie | |
| ZA782350B (en) * | 1977-05-26 | 1979-04-25 | Stainless Steel Pumps Ltd | Lobe-rotor pump |
-
1994
- 1994-10-13 DE DE4436518A patent/DE4436518A1/de not_active Withdrawn
-
1995
- 1995-10-09 ES ES95115849T patent/ES2161815T3/es not_active Expired - Lifetime
- 1995-10-09 DE DE59509508T patent/DE59509508D1/de not_active Expired - Lifetime
- 1995-10-09 EP EP95115849A patent/EP0708245B1/de not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0708245A1 (de) | 1996-04-24 |
| ES2161815T3 (es) | 2001-12-16 |
| DE4436518A1 (de) | 1996-04-18 |
| DE59509508D1 (de) | 2001-09-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0994257B1 (de) | Aussenzahnradpumpe mit Fördervolumenbegrenzung | |
| EP0362906B1 (de) | Innenzahnradpumpe | |
| EP2235374B1 (de) | Volumenveränderbare innenzahnradpumpe | |
| DE7625941U1 (de) | Rotorverdraengermaschine mit einer schnecke | |
| DE1528949A1 (de) | Pumpe mit in der Saugleitung eingebauter,verstellbarer Drossel | |
| DE2460282A1 (de) | Zentrifugalpumpe | |
| DE2033201A1 (de) | Verdrängermaschine mit schraubenartigen Verdrangerkorpern | |
| DE69303388T2 (de) | Anlage zur Energieumwandlung eines Fluidums mit veränderlicher Verdrängung | |
| EP0563661A1 (de) | Sichellose Innenzahnradpumpe mit radial beweglichen Dichtelementen zur Radialkompensation | |
| EP0666422B1 (de) | Lagerung und Antrieb der Rotoren eines Schraubenrotorverdichters | |
| DE102018212497B4 (de) | Fluidfördereinrichtung | |
| EP0509077B1 (de) | Kolbenpumpe, insbesondere radialkolbenpumpe | |
| EP0708245B1 (de) | Zahnradpumpe | |
| DE102005041579B4 (de) | Innenzahnradpumpe mit Füllstück | |
| DE102004060554A1 (de) | Flügelzellenpumpe | |
| DE3139561C2 (de) | ||
| DE1528717B2 (de) | Vorrichtung zum ausgleich des axialschubes bei mehrstufigen kreiselpumpen | |
| DE2134241C3 (de) | Zweistufige außenachsige Rotationskolbenmaschine | |
| DE3225790A1 (de) | Pumpe oder motor | |
| EP0315878B1 (de) | Innenzahnradpumpe | |
| DE3303856A1 (de) | Pumpe | |
| DE19909963B4 (de) | Verdrängerpumpe | |
| DE4135725A1 (de) | Innenzahnradpumpe mit zwei hohlraedern und einem gemeinsamen ritzel | |
| DE3737961A1 (de) | Innenzahnradpumpe | |
| DE3112930A1 (de) | Axialkolbenpumpe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE ES FR GB IT |
|
| 17P | Request for examination filed |
Effective date: 19961023 |
|
| 17Q | First examination report despatched |
Effective date: 19980605 |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: PIERBURG SARL |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE ES FR GB IT |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20010816 |
|
| REF | Corresponds to: |
Ref document number: 59509508 Country of ref document: DE Date of ref document: 20010920 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2161815 Country of ref document: ES Kind code of ref document: T3 |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
| ET | Fr: translation filed | ||
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20091026 Year of fee payment: 15 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20091023 Year of fee payment: 15 Ref country code: GB Payment date: 20091023 Year of fee payment: 15 Ref country code: FR Payment date: 20091110 Year of fee payment: 15 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20091218 Year of fee payment: 15 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20101009 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20101102 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20110630 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 59509508 Country of ref document: DE Effective date: 20110502 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20101009 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20111118 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20101009 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20101010 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20110502 |