EP4430307A1 - Fluidpumpe, kraftfahrzeug, verwendung und herstellverfahren - Google Patents
Fluidpumpe, kraftfahrzeug, verwendung und herstellverfahrenInfo
- Publication number
- EP4430307A1 EP4430307A1 EP22813222.1A EP22813222A EP4430307A1 EP 4430307 A1 EP4430307 A1 EP 4430307A1 EP 22813222 A EP22813222 A EP 22813222A EP 4430307 A1 EP4430307 A1 EP 4430307A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stator
- housing
- fluid pump
- pump
- fluid
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/0606—Canned motor pumps
- F04D13/0626—Details of the can
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/0606—Canned motor pumps
- F04D13/064—Details of the magnetic circuit
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
Definitions
- the present invention relates to a fluid pump, in particular for a motor vehicle, and a motor vehicle with such a fluid pump, use of such a fluid pump in a motor vehicle, and a method for producing the fluid pump.
- the object of the present invention is to improve a fluid pump.
- a fluid pump in particular for a motor vehicle, is proposed.
- the fluid pump has:
- An electric motor with a stator within a stator space of the housing for driving a rotor coupled to the impeller of the electric motor;
- a containment shell which separates a wet area of the fluid pump from a dry area of the fluid pump.
- the containment can with the stator is joined between two housing parts fastened to one another and is at least elastically compressed and is supported against the stator and a pump stage housing section.
- the containment shell braces the stator against the housing and thereby fixes the stator relative to the housing in the longitudinal direction of the fluid pump.
- the containment shell In addition to its function as a separating element, the containment shell also has a function as a clamping and fixing element.
- the proposed fluid pump solution does not require any separate fastening means, for example in the form of screws, in order to fix the stator in relation to the housing.
- this fluid pump solution has a compact design and can be produced inexpensively.
- the can can be joined to the stator, forming a press fit.
- This has the advantage that during production of the fluid pump, the spacing of a pot section of the containment pot, which encloses or includes the rotor, from the housing in the longitudinal direction of the fluid pump is subject to fewer fluctuations.
- the can can be joined with the stator with play.
- the containment shell is supported in a transition area between said cup section of the containment shell, which encloses or encompasses the rotor, and a containment shell section formed transversely onto the cup section and compressed or bent in the longitudinal direction of the fluid pump.
- a closed, continuous shoulder or a closed, continuous shoulder can be formed on the containment shell in the transition area.
- the two housing parts or the two housing parts that are fastened to one another are spaced apart from one another in a fastening area in the longitudinal direction of the fluid pump. This spacing allows the compression or Adjust the bending of the can in the longitudinal direction of the fluid pump accordingly.
- This compression or bending of the containment shell in the longitudinal direction of the fluid pump is accompanied at least by an elastic deformation of the containment shell. This deformation of the containment shell can therefore be purely elastic or elastic-plastic or fail.
- an elastically or elastically plastically compressed spring section (or compression or bending section) of the containment shell is arranged in the longitudinal direction of the fluid pump between the stator and the pump stage housing section, which is supported against the stator and the pump stage housing section, relative to these two support points or is bent or compressed relative to the stator and to the pump stage housing section.
- the fluid pump is designed as a radial pump.
- a vehicle with a fluid pump of the type described above is also proposed.
- a vehicle is to be understood as meaning any type of vehicle or motor vehicle that is operated either by an internal combustion engine and/or by an electric motor, but in particular passenger cars and/or commercial vehicles. These are preferably semi-autonomously and in particular fully autonomously operated vehicles.
- a use of a fluid pump of the type described above in a vehicle is also proposed.
- the fluid pump can be used as a water pump for controlling the temperature of a battery and/or for cooling an engine and/or for controlling the temperature of an interior or passenger compartment of the vehicle or can be provided or set up for this purpose.
- a method for producing a fluid pump of the type described above is proposed, with the steps:
- FIG. 2 shows an alternative to the fluid pump shown in FIG.
- a fluid pump 2 in the form of a spiral housing pump, also known as a radial pump, which is provided in particular for cooling and/or temperature control in a motor vehicle.
- the pump 2 comprises a first housing part or housing section in the form of a cover 4, which can be in one or more parts, and a second housing part or housing section in the form of a pump stage housing section 6, in which an impeller is accommodated, which contains a fluid in the form of a Cooling liquid promotes through a fluid chamber 8 of the pump stage housing section 6.
- the pump 2 also includes an electric motor with a stator 10, which is arranged within a stator space of the housing 4, 6, 20 and which interacts with a rotor of the electric motor or drives it.
- the rotor is arranged wet-running within a pot section 12 of a containment pot ST that accommodates or encloses it and is coupled to the impeller.
- the rotor is accommodated by a section 16 of the bottom of the pot section.
- the containment shell ST separates a wet space of the pump 2 from a dry space of the pump 2.
- the containment shell ST acts as an elastic spring or clamping element, which clamps the stator 10 against the cover 4 when the pump stage housing section 6 is screwed to the cover 4 and thereby axially, i.e. in the longitudinal direction X - X of the pump 2 relative to the housing 4, 6, 20.
- a spring or clamping section 14 that is elastic in the longitudinal direction X - X of the pump 2 is formed on the open end of the pot section 12 and - arranged between the stator 10 and the pump stage housing section 6 - extends transversely to the longitudinal direction X - X or in the transverse direction Y - Y of the pump 2 extends radially outwards.
- this section 14 At the radially outer end of this section 14 there is formed an end section 18 which is angled towards the cover 4 and extends into a gap area close to a fastening area between the cover 4 and the pump stage housing section 6 .
- At least one sealing element is provided in the area of this end section 18 on both sides of the containment shell ST, so that this end section 18 seals sufficiently both against the cover 4 and against the pump stage housing section 6 .
- the dry space and the wet space of the pump 2 are thus sufficiently sealed against the surroundings of the pump.
- the containment shell ST interacts with the stator 10, with the containment shell ST pressing the stator 10 against the contact point KPi of the cover 4.
- the containment pot ST is supported against the stator 10 at the contact point KP2 and against the pump stage housing section 6, 20 - in a transition area to the end section 18 - on Contact point KP3 from.
- the section 14 bends around these two contact points KP2, KP3, which as such form or represent bending points. This results in the previously described tension.
- the pump stage housing section 20 in FIG. 1 is an optional insert for forming the fluid chamber of the pump stage.
- This pump stage housing section 20 is in turn supported on the pump stage housing section 6, with which it forms a contact point KP4. With such an insert 20, the efficiency of the pump hydraulics can be influenced or improved.
- Said pot section 12 can be pressed with the stator 10 or joined with play.
- the containment shell ST is not supported - as shown in Figs. 1 and 2 - via the contact point KP2, but via its contact or pressing surface with the stator 10 against the stator 10.
- the one in Figs. 1 and 2 drawn point KP2 is only a bending point in this case.
- the can ST is supported against the stator 10 in the transition region between the pot section 12 and the section 14, specifically at the contact point KP2.
- this contact or support point KP2 is also a bending point.
- FIGS. 1 and 2 illustrated contact points KP1, KP2, KP4, KP4 in a spatial view of the proposed fluid pump 2 are actually punctiform, linear and/or areal contact points between the joining elements interacting with one another.
- FIG. 2 differs from FIG. 1 only in that the insert part 20 is omitted, so that the contact point KP4 or the contact point KP4 is omitted.
- the containment shell ST is therefore supported directly on the pump stage housing section 6 .
- the housing parts or sections 4, 6, 20 can be injection molded from a plastic, for example, just like the containment shell ST.
- the containment shell ST be made of metal, e.g. made of stainless steel, in order to advantageously be able to provide a corresponding structural rigidity and strength.
- the two housing parts 4, 6 can also be clipped or rolled together.
- fluid pump solutions described above do not require separate screws or other separate fastening means in order to connect a stator lamination stack carrying coil windings to the pump housing. Fastening elements and thus installation space are therefore saved. These fluid pump solutions are compact and inexpensive to manufacture.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021212722.3A DE102021212722A1 (de) | 2021-11-11 | 2021-11-11 | Fluidpumpe, Kraftfahrzeug, Verwendung und Herstellverfahren |
| PCT/EP2022/080615 WO2023083670A1 (de) | 2021-11-11 | 2022-11-03 | Fluidpumpe, kraftfahrzeug, verwendung und herstellverfahren |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4430307A1 true EP4430307A1 (de) | 2024-09-18 |
| EP4430307B1 EP4430307B1 (de) | 2025-07-23 |
Family
ID=84362910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22813222.1A Active EP4430307B1 (de) | 2021-11-11 | 2022-11-03 | Fluidpumpe, kraftfahrzeug, verwendung und herstellverfahren |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20240360831A1 (de) |
| EP (1) | EP4430307B1 (de) |
| CN (1) | CN118215790A (de) |
| DE (1) | DE102021212722A1 (de) |
| WO (1) | WO2023083670A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102024208002A1 (de) * | 2024-08-22 | 2026-02-26 | Robert Bosch Gesellschaft mit beschränkter Haftung | Fluidpumpe und Pumpentopf für eine Fluidpumpe |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19509134A1 (de) | 1995-03-14 | 1996-09-19 | Wilo Gmbh | Statorbefestigung für einen Spaltrohrmotor |
| DE102011083868A1 (de) | 2011-09-30 | 2013-04-04 | Robert Bosch Gmbh | Kühlkreislaufpumpe für ein Kraftfahrzeug |
| DE102011090076A1 (de) * | 2011-12-29 | 2013-07-04 | Robert Bosch Gmbh | Vorrichtung zum Halten einer Maschinenkomponente in einer elektrischen Maschine sowie elektrische Maschine |
| US10291091B2 (en) * | 2014-09-25 | 2019-05-14 | Magna Powertrain Fpc Limited Partnership | Electric fluid pump with improved rotor unit, rotor unit therefor and methods of construction thereof |
| DE102016206404A1 (de) * | 2016-04-15 | 2017-10-19 | Bühler Motor GmbH | Elektromotor, insbesondere Pumpenmotor |
-
2021
- 2021-11-11 DE DE102021212722.3A patent/DE102021212722A1/de active Pending
-
2022
- 2022-11-03 CN CN202280072770.XA patent/CN118215790A/zh active Pending
- 2022-11-03 WO PCT/EP2022/080615 patent/WO2023083670A1/de not_active Ceased
- 2022-11-03 EP EP22813222.1A patent/EP4430307B1/de active Active
-
2024
- 2024-04-30 US US18/650,194 patent/US20240360831A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN118215790A (zh) | 2024-06-18 |
| WO2023083670A1 (de) | 2023-05-19 |
| DE102021212722A1 (de) | 2023-05-11 |
| EP4430307B1 (de) | 2025-07-23 |
| US20240360831A1 (en) | 2024-10-31 |
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