EP4565769A1 - Pumpe, insbesondere getriebeölpumpe - Google Patents
Pumpe, insbesondere getriebeölpumpeInfo
- Publication number
- EP4565769A1 EP4565769A1 EP23758230.9A EP23758230A EP4565769A1 EP 4565769 A1 EP4565769 A1 EP 4565769A1 EP 23758230 A EP23758230 A EP 23758230A EP 4565769 A1 EP4565769 A1 EP 4565769A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- side plate
- pump device
- gear
- electric motor
- 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
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- 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
- F01C21/104—Stators; Members defining the outer boundaries of the working chamber
- F01C21/108—Stators; Members defining the outer boundaries of the working chamber with an axial surface, e.g. side plates
-
- 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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
- F04C15/008—Prime movers
-
- 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
-
- 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
- F04C2240/40—Electric motor
Definitions
- the present invention relates to a pump, in particular a gear oil pump, comprising an electric motor with a stator and a motor rotor, a central axis, a pump device with a gear pump with an internally toothed external gear and an externally toothed internal gear, which run into one another, the pump device having an upper side plate and a lower one Side plate includes, further comprising a base plate and a pump housing.
- Such pumps are known from the prior art.
- the individual components namely the electric motor, the pump device and the electronics, are arranged along the same axis, i.e. axially one behind the other.
- the arrangement is usually as follows: electric motor, pump device, electronics.
- the drive shaft of the electric motor is coupled to the pump device.
- Both the electric motor and the pump device have housings.
- the present invention is based on the object of advantageously developing a generic electric pump, providing a compact pump and eliminating the disadvantages of the known electric pumps.
- the invention proposes a pump according to the preamble of claim 1, in which the pump device is arranged radially within the electric motor and the external gear of the pump device is driven by the motor rotor.
- the installation space for the pump is significantly reduced and misalignment caused by the electric motor driving the pump device is prevented.
- the external gear of the pump device is pressed into the motor rotor. This makes it possible for the motor rotor to directly drive the external gear and for both components to rotate around the same axis and thus centrically around one and the same axis.
- the pump device is driven by the external gear as the driving gear of the pump device. There is no drive shaft from the motor to the pumping device.
- the internal gear of the pump device is rotatably mounted on a bearing sleeve (bushing) in the pump device eccentrically to the central axis.
- the internal gear is the driven gear in the pumping device and does not have to absorb large forces and therefore neither does the bearing sleeve (bushing), which significantly reduces the risk of misalignment between the motor rotor, external gear and internal gear.
- the bearing sleeve (bushing) is arranged on a fastening element which extends eccentrically to the central axis through the upper side plate of the pump device, the internal gear, the lower side plate into the base plate of the pump.
- the upper side plate, the internal gear and the lower side plate are thus arranged in a defined position relative to one another.
- the lower side plate is designed as a pressure plate.
- the motor rotor is rotatably mounted on the lower side plate via a bearing sleeve (bushing).
- the motor rotor is rotatably mounted via a bearing sleeve (bushing) on the lower side plate and via a bearing sleeve (bushing) on the upper side plate.
- the driving rotational forces of the motor rotor and the external gear connected to it therefore act exclusively on the side plates and are reduced.
- the risk of misalignment of the pressurized areas in the pumping device, which can lead to eccentricity, is reduced and, with this, the size of the bearings to be used.
- the stator is arranged on the base plate. This leads to a compact and simple design of the pump.
- the base plate and the lower side plate are formed in one piece, which further simplifies the structure and reduces the number of components of the pump.
- the housing is detachably connected to the base plate.
- the individual components of the pump can first be installed with the base plate and the housing can be attached in the final step.
- Figure 1 a first embodiment of the pump according to the invention in section
- Figure 2 a second embodiment of the pump according to the invention in section, and
- Figure 2a a view of the pump along line AA in Figure 2.
- FIG. 1 shows a first embodiment of the pump 10 according to the invention.
- a pump described below, in particular a transmission oil pump, can be used in many technical areas, such as in automotive hydraulic systems, automatic transmissions, in commercial vehicles, in oil delivery systems, in nautical applications, for battery cooling systems and for lubrication systems.
- the pump 10 includes an electric motor 20 with a stator 30 and a motor rotor 40 with a central axis 50.
- a pump device 60 with a gear pump 70 is arranged radially within the electric motor 20.
- the gear pump 70 has an internally toothed external gear 80 and an externally toothed internal gear 90 running therein.
- an upper side plate 100 adjoins axially above the two gears 80, 90 and a lower side plate 110 axially below the two gears 80, 90.
- the pump device 60, the electric motor 20 and electronics, not shown, are arranged on a base plate 120 and enclosed by a housing 130, which is only indicated schematically.
- the electric motor 20 is constructed in a known manner.
- the stator 30 sits on the base plate 120, namely on an extension 140 of the base plate 120, whereby the positioning of the stator 30 in the pump 10 is fixed.
- the motor rotor 40 is provided radially within the stator 30 in a known manner.
- the internally toothed external gear 80 of the pump device 60 is pressed into the motor rotor 40 in such a way that a rotation-proof connection is established between the motor rotor 40 and the external gear 80, whereby the rotation of the motor rotor 40 is transmitted to the external gear 80, the motor rotor 40 consequently the external gear 80 drives it by driving it.
- the externally toothed internal gear 90 running radially inside the external gear 80 is rotatably mounted on a bearing sleeve 150.
- the pump device 60 is fixed on the base plate 120 by means of a fastening element 160, which is arranged eccentrically to the central axis 50.
- the fastening element 160 extends through the upper side plate 100, through the internal gear 90 which adjoins axially in the direction of the base plate 120 and through the lower side plate 110 into the base plate 120 and thus fixes the pump device 60 in the base plate 120.
- the fastening element 160 is in the base plate 120 is fixed, for example screwed in, and thus serves for the defined positioning of the upper side plate 100, the internal gear 90, the lower side plate 110 and the base plate 120.
- the bearing sleeve 150 is arranged on the fastening element 160. However, it is also possible to rotatably arrange the internal gear 90 directly on the fastening element 160 and thereby dispense with the bearing sleeve 150.
- bearing sleeve 170 which is arranged on the outer circumference of the lower side plate 110.
- Figure 1 shows a further bearing sleeve 180, which is arranged on the upper side plate 100 on the outer circumference.
- Both bearing sleeves 170, 180 are not absolutely necessary for the radial mounting of the motor rotor 40 with the external gear 80. It is also possible to provide only one of the bearing sleeves 170 or 180.
- FIG. 2 shows a second embodiment of the pump 10 according to the invention in section, with the same elements being designated by the same reference numbers as in Figure 1. Furthermore, Figure 2a shows the view along line A in Figure 2.
- the pump 10 in Figure 2 differs from the pump 10 from Figure 1 in that only one side plate, namely the upper side plate 100, is provided.
- the stator 30 of the electric motor 20 is arranged on the extension 140 of the base plate 120.
- the internally toothed outer wheel 80 of the pump device 60 is pressed into the motor rotor 40 in the same way as in FIG. 1, that is to say connected to it in a rotationally fixed manner and is driven by it.
- the pump device 60 consisting of the upper side plate 100, the axially adjoining internal gear 90, which runs in the external gear 80, is eccentric via a fastening element 160, which extends through the upper side plate 100 and the internal gear 90 into the base plate 120 fixed to the central axis 50 on the base plate 120.
- a bearing sleeve 190 is arranged on the fastening element 160.
- the bearing sleeve 190 functions as a rotation bearing for the internal gear 90.
- the lower side plate 110 of Figure 1 is formed here by the extension 140 of the base plate 120.
- the non-rotatable connection of the motor rotor 40 with the external gear 80 is mounted on a bearing sleeve 200 in the embodiment according to FIG.
- the bearing sleeve 200 is arranged on the step-shaped extension 140 of the base plate 120.
- the motor rotor 40 with the external gear 80 connected to it is therefore mounted on the base plate 120 in this embodiment.
- the electric motor 20 and the pump device 60 as well as the electronics, not shown, are enclosed by the housing 130, which is releasably attached to the base plate 120.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022208139.0A DE102022208139A1 (de) | 2022-08-04 | 2022-08-04 | Pumpe, insbesondere Getriebeölpumpe |
| PCT/EP2023/071233 WO2024028293A1 (de) | 2022-08-04 | 2023-08-01 | Pumpe, insbesondere getriebeölpumpe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4565769A1 true EP4565769A1 (de) | 2025-06-11 |
Family
ID=87762556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23758230.9A Pending EP4565769A1 (de) | 2022-08-04 | 2023-08-01 | Pumpe, insbesondere getriebeölpumpe |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4565769A1 (de) |
| DE (1) | DE102022208139A1 (de) |
| WO (1) | WO2024028293A1 (de) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2761078A (en) * | 1952-03-29 | 1956-08-28 | Wetmore Hodges | Electrical motor pump or compressor |
| US2711286A (en) * | 1952-08-01 | 1955-06-21 | Wetmore Hodges | Motor-pump or compressor |
| JP2005098268A (ja) * | 2003-09-26 | 2005-04-14 | Koyo Seiko Co Ltd | 電動内接ギアポンプ |
| JP2005207245A (ja) * | 2004-01-20 | 2005-08-04 | Koyo Seiko Co Ltd | 電動ポンプユニット |
| JP2007009787A (ja) * | 2005-06-30 | 2007-01-18 | Hitachi Ltd | モータ一体型内接歯車式ポンプ及び電子機器 |
| DE102006037177A1 (de) * | 2006-08-09 | 2008-02-14 | Robert Bosch Gmbh | Innenzahnradpumpe |
| DE102015015863A1 (de) * | 2015-12-09 | 2017-06-14 | Fte Automotive Gmbh | Elektromotorisch angetriebene Flüssigkeitspumpe |
| ITUA20163309A1 (it) * | 2016-05-10 | 2017-11-10 | Bosch Gmbh Robert | Gruppo di pompaggio per alimentare combustibile, preferibilmente gasolio, ad un motore a combustione interna |
| DE102019100158A1 (de) * | 2019-01-07 | 2020-07-09 | Thomas Magnete Gmbh | Gerotorpumpe mit radialer Spaltkompensation |
-
2022
- 2022-08-04 DE DE102022208139.0A patent/DE102022208139A1/de active Pending
-
2023
- 2023-08-01 WO PCT/EP2023/071233 patent/WO2024028293A1/de not_active Ceased
- 2023-08-01 EP EP23758230.9A patent/EP4565769A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102022208139A1 (de) | 2024-02-15 |
| WO2024028293A1 (de) | 2024-02-08 |
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