EP4168657A1 - Vorrichtung zum fördern eines kühlmittels - Google Patents
Vorrichtung zum fördern eines kühlmittelsInfo
- Publication number
- EP4168657A1 EP4168657A1 EP21731085.3A EP21731085A EP4168657A1 EP 4168657 A1 EP4168657 A1 EP 4168657A1 EP 21731085 A EP21731085 A EP 21731085A EP 4168657 A1 EP4168657 A1 EP 4168657A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flow
- intake port
- pipe section
- curved pipe
- coolant
- 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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/04—Arrangements of liquid pipes or hoses
-
- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
- F04D29/4273—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps suction eyes
-
- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
- F04D29/4293—Details of fluid inlet or outlet
-
- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps
- F04D29/448—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps bladed diffusers
Definitions
- the invention relates to a device for conveying a coolant, a device for cooling a drive unit, an intake connector for a pump and a method for conveying a liquid.
- Coolant circuits of internal combustion engines can have high coolant flow rates. Particularly at high flow speeds and pronounced bends in the lines, there is a risk of flow stall and cavitation. Strong curvatures in the lines can arise due to the installation space and limited space. Flow breaks and cavitation can lead to a worsened flow to a delivery element of a pump of the coolant circuit.
- flow guide elements can be arranged to reduce the flow resistance.
- DE 10360 839 B3 discloses a pipe bend for connecting fluid lines arranged at an angle to one another.
- the elbow has flow guide elements in the form of guide plates.
- the invention is based on the object of creating an alternative and / or improved device with which a pump flow can be improved.
- the device has a curved pipe section and a pump, preferably an impeller pump, with a conveying element (e.g. vane wheel) and a straight and tubular suction nozzle which is arranged directly downstream of the curved pipe section and directly upstream of the conveying element.
- the device can have a flow guide element that is arranged within the intake port, preferably for equalizing a flow in the intake port, and / o the at least one inflow channel which opens into the intake port in a radial direction with respect to the intake port, preferably for equalizing a flow in the Intake manifold.
- the device can advantageously enable a uniform flow to the conveying element in that the flow guide element is integrated directly into the suction port of the pump and / or at least one partial flow is additionally fed directly into the suction port of the pump.
- any flow dead spaces directly upstream of the conveying element can be dealt with in a particularly targeted manner.
- the intake connection has to be made very short, for example for reasons of space, and thus does not offer enough calming path for the flow after it has passed the curved pipe section.
- flow guide elements in the curved pipe section can be dispensed with, which, for example, can be difficult to integrate into the curved pipe section due to the design. There is also no need for a complicated redesign of the curved pipe section or a redesign of the line laying.
- the intake connector can have a length in a range between 50 mm and 400 mm.
- the intake connector can have a flow cross-section in a range between 50 mm and 150 mm.
- the suction port can preferably form a section of a pump housing of the pump or be at least partially, preferably completely, arranged within a pump housing of the pump.
- the intake connector can preferably be flanged directly to the curved pipe section.
- the flow guiding element is designed to reduce a dead flow space in the intake port caused by the curved pipe section, preferably by deflecting a partial flow towards the dead flow space.
- the at least one inflow channel opens into the intake port in such a way that a dead flow space in the intake port caused by the curved pipe section is reduced, preferably by opening into the intake port in a direction towards the flow dead space or in a direction towards the flow guide element.
- the flow guide element is immovable and / or is arranged centrally in the intake port with respect to a flow cross section of the intake port.
- the flow guide element has an elongated, preferably conical, flow body which is aligned along a central longitudinal axis of the suction nozzle.
- the flow guiding element can preferably have at least one, preferably (e.g. helically) twisted or curved, flow vane, which extends radially outward from the elongated flow body, preferably to adjoining an inner channel circumferential surface of the intake connector.
- At least two flow vanes are included, which are preferably twisted or curved to different degrees. In this way, a flow can be influenced very individually and precisely via its flow cross-section in order to even out the flow.
- the at least one inflow channel opens out at right angles into the suction nozzle, or the at least one inflow channel opens into the suction nozzle at an acute angle towards the delivery element of the pump.
- inflow channels are included, which are arranged distributed around a circumference of the intake connector, preferably opposite one another.
- an outlet of the at least one inflow channel has a cross-sectional constriction or a cross-sectional widening. In this way, a speed of the flow flowing in via the at least one inflow channel can be adjusted in a targeted manner, so that the flow dead space can be reached as effectively as possible.
- the intake connector has a flow cross-section that widens in the direction of flow. This measure can reduce a flow velocity in the intake port, so that the measures used to smooth out the flow (flow guide element and / or inflow duct) can possibly have a better effect.
- the intake connector has an inlet on the end face which is connected directly to an outlet of the curved pipe section.
- the at least one inflow channel bypasses the curved pipe section.
- the curved pipe section has a curvature of at least 90 °, preferably at least 180 °.
- the curved pipe section has at least two inlets, which are preferably different (e.g. opposite) are aligned.
- the teaching of the present Offenabrung can be used particularly in front of geous.
- Another aspect of the present disclosure relates to a device for cooling a drive unit, preferably an internal combustion engine.
- the device has a cooling circuit which is designed to cool the drive unit and which has the device for conveying a coolant as disclosed herein.
- the at least one inflow channel connects at least one oil cooler of the cooling circuit directly to the intake port.
- the curved pipe section is arranged downstream of a heat exchanger, preferably a cooling water heat exchanger, of the cooling circuit.
- the curved pipe section can be arranged downstream of a thermostat of the cooling circuit.
- a first inlet of the curved pipe section can be arranged downstream of the heat exchanger and a second inlet of the curved pipe section can be arranged downstream of the thermostat.
- the intake manifold has a front inlet, a rear outlet and a coolant channel that extends straight between the front inlet and the rear outlet.
- a flow guide element can be arranged in the coolant channel, preferably to even out a flow in the coolant channel, and / or at least one inflow channel can open into the coolant channel in a radial direction with respect to the coolant channel, preferably to compare a flow in the coolant channel.
- the method includes guiding a flow of liquid through a curved pipe section directly into a straight and tubular suction port of a pump.
- the method includes (e.g. partial or complete) reducing a flow dead space caused by the curved pipe section in the intake port by means of a flow mungsleitelements in the intake and / or by supplying at least one wide Ren flow that opens in a radial direction with respect to the intake in the intake.
- the method comprises drawing in the liquid stream from the suction nozzle by means of the pump.
- reducing the dead flow space caused by the curved pipe section in the intake port by means of the flow guide element in the intake port includes a deflection of a partial flow of the liquid flow by means of the flow guide element to the dead flow space.
- reducing the dead flow space caused by the curved pipe section in the intake port by supplying the at least one further flow includes supplying the at least one further flow into the dead flow space, preferably directly and / or indirectly by means of the flow guide element.
- FIG. 1 shows a schematic view of a device for cooling a drive unit according to an exemplary embodiment of the present disclosure
- FIG. 2 shows a perspective view of a curved pipe section and a straight suction connector of a pump according to an exemplary embodiment of the present disclosure
- FIG. 3 shows a perspective view of a straight intake connector with two additional inflow channels according to an exemplary embodiment of the present disclosure
- FIG. 4 shows a rear view of the straight intake port by way of example with the two additional inflow channels
- FIG. 5 shows a side view of the straight intake port, by way of example, with the two additional inflow channels
- Figure 6 is a sectional view taken along a line A-A in Figure 5.
- FIG. 7 shows a sectional view along a line BB in FIG.
- the embodiments shown in the figures match at least in part, so that similar or identical parts are provided with the same reference numerals and reference is made to the description of the other embodiments or figures for their explanation in order to avoid repetition.
- FIG. 1 shows a device 10 for cooling a drive unit 12, preferably an internal combustion engine.
- the drive unit 12 is shown by way of example as a multi-cylinder reciprocating internal combustion engine in a V-cylinder configuration. Other configurations are also possible, e.g. B. an in-line configuration.
- the drive unit 12 can also be designed completely differently, for. B as an electric motor, etc.
- the device 10 has a cooling circuit 14 for cooling the drive unit 12.
- the cooling circuit 14 has a pump 16, a thermostat 18, a heat exchanger 20 and two oil coolers 22.
- the pump 16 has an intake connector 24 and a delivery element 26.
- the straight to suction pipe 24 is arranged directly upstream of the conveying element 26 (and optionally an equalizing container of the pump 16).
- a curved pipe section 28 is arranged directly upstream of the intake port 24. Coolant, preferably cooling water, flows from the curved pipe section 28 directly into the intake port 24. The coolant flowing through the suction nozzle 24 flows precisely onto the conveying element 26. The conveying element 26 sucks the coolant directly from the suction nozzle 24.
- the pump 16 can preferably be an impeller pump.
- the conveying element 26 can be an impeller.
- Downstream of the pump 16 flows through at least a first partial flow of the coolant egg NEN water jacket of at least one cylinder head and / or a motor block of the drive unit 12 to cool the drive unit 12.
- the coolant Downstream of the water jacket of the drive unit 12, the coolant flows to the thermostat 18 Tem temperature of the coolant, the thermostat 18 distributes the coolant to a heat exchanger 20 or to the curved pipe section 28 bypassing the heat exchanger 20.
- the coolant is cooled, for. B. by means of sea water, ambient air and / o the wind, etc. Downstream of the heat exchanger 20, the coolant also flows into the curved pipe section 28.
- At least one second partial flow can also be branched off and passed to the two oil coolers 22 for cooling engine oil of the drive unit 12.
- the oil cooler 22 conduct the coolant back to the pump 16, preferably by means of two inflow channels 30 which open directly into a peripheral wall of the 24 Ansaugstut zens. It is also possible that, for example, only one oil cooler 22 is present.
- the oil cooler 22 can preferably be connected in parallel.
- z. B. in an engine compartment of a vehicle (z. B. motor vehicle, watercraft or rail vehicle) may be necessary to form the curved pipe section 28 in a comparatively unfavorable manner in terms of flow.
- An exemplary embodiment of the curved pipe section 28 is shown schematically together with the suction nozzle 24 in FIG.
- the curved pipe section 28 has two inlets 32 and 34. Coolant flows through the first inlet 32 from the heat exchanger 20 into the curved pipe section 28. Coolant flows through the second inlet 34 from the thermostat 18 into the curved pipe section 28.
- the curved pipe section 28 opens into the suction nozzle 24 at the front. In contrast to the curved pipe section 28, the suction nozzle 24 is straight.
- the two partial flows T1, T2 mix and are substantially deflected directly upstream of the intake port 24, e.g. B. by at least 90 °, preferably by around 180 ° as shown in FIG. Conventionally, this essential deflection directly upstream of the intake port 24 would result in a very uneven flow through the intake port 24, including the formation of a dead flow space 36 in the intake port 24.
- the flow to the conveying element 26 would be significantly impaired.
- the two measures can be used both individually and preferably in combination with one another. In combination with each other, there are synergy effects, since both measures have a positive influence on the other.
- FIGS. 3 to 7 show the suction port 24 of the pump 16. To improve clarity, the other parts of the pump 16 are not shown.
- the intake connector 24 has an inlet 38 on the front and an outlet 40 on the rear.
- the intake connector 24 or a coolant channel 42 of the intake connector 24 extends straight between the inlet 38 and the outlet 40.
- the coolant channel 42 can widen towards the outlet 40 in the (flow) cross section.
- the intake port 24 may have a truncated cone shape.
- the intake connector 24 preferably has a flow guide element 44 (1st measure) and / or at least one inflow duct 30 opens into a peripheral wall of the intake connector 24 (2nd measure).
- a flow in the intake port 24 can be made more uniform or the dead flow space 36 (see FIG. 2) can be partially reduced or completely prevented.
- the conveying element 26 (see FIG. 1) is subjected to a more uniform flow.
- the flow guide element 44 is immobile.
- the flow guide element 44 is arranged centrally in the intake port 24.
- the flow guide element 44 can be formed from an elongate flow body 46 and at least one flow vane 48.
- the flow body 46 extends along a central longitudinal axis of the intake port 24.
- the flow body 46 is conical and widens in the direction of flow or in the direction of the conveying element 26 (see FIG. 1).
- the two flow vanes 48 extend radially outward starting from the elongated flow body 46.
- the two flow vanes 48 preferably merge into an inner circumferential surface of the intake port 24 or of the coolant channel 42.
- the flow vanes 48 are preferably twisted or twisted in a helical manner, for example.
- the twisted shape of the flow vanes 48 leads coolant to the potential dead flow space 36 (see FIG. 2).
- the flow vanes 48 can be twisted or twisted to the same degree or to different degrees.
- the flow guide element 44 can also have more or less than two flow vanes 48, depending on the requirement.
- the at least one inflow channel 30 can supply coolant from the oil cooler 22 directly into the intake port 24, that is, for example, bypassing the curved Rohrab section 28. It is possible that the at least one inflow channel 30 branches off from another point of the cooling circuit 14, for. B. downstream of the heat exchanger 20 and / or upstream of the curved pipe section 28.
- the at least one inflow channel 30 opens into a circumferential wall of the intake port 24 or in a radial direction with respect to a longitudinal axis of the intake port 24.
- the intake port 24 thus receives on the one hand coolant from the end face of the curved pipe section 28 and on the other hand coolant from at least one radial direction from the at least least an inflow channel 30.
- the at least one inflow channel 30 can be arranged and aligned in such a way that the coolant flowing out of the at least one inflow channel 30 reduces the potential flow dead space 36.
- an outlet 50 of the at least one inflow channel 30 can be directed directly towards the dead flow space 36.
- a shape, in particular a cross section, of the outlet 50 can be adapted such that the coolant flows into the intake port 24 from the at least one inflow channel 30 at a speed or impulse such that the dead flow space 36 is reached by the inflowing coolant.
- a cross-sectional constriction can be arranged at the outlet 50 of the inflow channel 30 in order to increase a speed of the coolant so that the flow dead space 36 can also be reached when it is further away from the outlet 50 of the inflow channel 30. It can also be a cross-sectional widening at the outlet 50 of the inflow channel 30 be arranged, for. B. to bring about a speed reduction when the flow dead space 36 is arranged very close to the outlet 50 of the inflow channel 30.
- outlet 50 of the at least one inflow channel 30 is directed towards the flow guide element 44.
- the flow guiding element 44 can, in turn, be designed or shaped in such a way that the coolant is guided from the at least one inflow channel 30 to the (potential) dead flow space 36.
- the outlets 50 of the inflow channels 30 can be arranged distributed around a circumference of the intake connector 24.
- the outlets of the to flow channels 30 can be arranged at the same posi tion or offset from one another with respect to a longitudinal axis of the intake port 24.
- Each inflow channel 30 preferably has its own outlet 50. However, it is also possible for several inflow channels 30 to share one outlet 50.
- the outlet 50 can open into the intake connector 24 at right angles. Alternatively, the outlet 50 can, for example, open into the intake port 24 at an acute angle towards the delivery element 26 of the pump 16 (see FIG. 1).
- the above embodiments are described with reference to a cooling circuit of an internal combustion engine (see Figure 1). Even if this application is particularly advantageous, it has been recognized that the techniques disclosed herein can also be used in other devices for conveying or in other pumps.
- the invention is not restricted to the preferred exemplary embodiments described above. Rather, a large number of variants and modifications are possible which also make use of the inventive concept and therefore fall within the scope of protection.
- the invention also claims protection for the subject matter and the features of the subclaims independently of the claims referred to.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020116359.2A DE102020116359A1 (de) | 2020-06-22 | 2020-06-22 | Vorrichtung zum Fördern eines Kühlmittels |
| PCT/EP2021/064788 WO2021259606A1 (de) | 2020-06-22 | 2021-06-02 | Vorrichtung zum fördern eines kühlmittels |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP4168657A1 true EP4168657A1 (de) | 2023-04-26 |
| EP4168657B1 EP4168657B1 (de) | 2025-07-30 |
| EP4168657C0 EP4168657C0 (de) | 2025-07-30 |
Family
ID=76355470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21731085.3A Active EP4168657B1 (de) | 2020-06-22 | 2021-06-02 | Vorrichtung zum fördern eines kühlmittels |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4168657B1 (de) |
| DE (1) | DE102020116359A1 (de) |
| WO (1) | WO2021259606A1 (de) |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5529084A (en) | 1994-03-24 | 1996-06-25 | Koch Engineering Company, Inc. | Laminar flow elbow system and method |
| SE509406C2 (sv) * | 1997-05-29 | 1999-01-25 | Volvo Lastvagnar Ab | Metod och anordning vid cirkulationspumpar |
| DE10360839B3 (de) | 2003-12-23 | 2005-06-09 | Naber Holding Gmbh & Co. Kg | Rohrkrümmer zum Verbinden von Fluidleitungen |
| DE102006019737A1 (de) | 2006-04-28 | 2007-10-31 | Bayerische Motoren Werke Ag | Kühlsystem einer Brennkraftmaschine mit zwei Wärmetauschern |
| US8601997B2 (en) | 2010-05-17 | 2013-12-10 | GM Global Technology Operations LLC | Water pump with integrated oil cooler |
| DE102011107557A1 (de) | 2011-07-16 | 2013-01-17 | Volkswagen Aktiengesellschaft | Strömungspumpe |
| DE102013009451A1 (de) * | 2013-06-06 | 2014-12-11 | Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg | Elektrische Kühlmittelpumpe |
| KR101647100B1 (ko) * | 2015-03-10 | 2016-08-09 | 주식회사 포스코건설 | 와류 저감형 스크류 베인 |
| AT517125B1 (de) | 2015-05-07 | 2019-07-15 | Avl List Gmbh | Kühlmittelpumpe für eine brennkraftmaschine |
| JP6315001B2 (ja) | 2016-02-01 | 2018-04-25 | トヨタ自動車株式会社 | エンジン冷却装置 |
| US10227987B2 (en) | 2016-12-16 | 2019-03-12 | Borgwarner Emissions Systems Llc | Valve assembly integrated into a coolant pump and method for controlling the same |
| DE102017206939A1 (de) | 2017-04-25 | 2018-10-25 | Mahle International Gmbh | Mehrflutige Kühlmittelpumpe zum Fördern eines Kühlmittels |
| DE102018005383A1 (de) * | 2018-07-06 | 2020-01-09 | Daimler Ag | Wasserpumpe für ein Kraftfahrzeug, insbesondere für einen Kraftwagen |
-
2020
- 2020-06-22 DE DE102020116359.2A patent/DE102020116359A1/de active Pending
-
2021
- 2021-06-02 EP EP21731085.3A patent/EP4168657B1/de active Active
- 2021-06-02 WO PCT/EP2021/064788 patent/WO2021259606A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021259606A1 (de) | 2021-12-30 |
| EP4168657B1 (de) | 2025-07-30 |
| DE102020116359A1 (de) | 2021-12-23 |
| EP4168657C0 (de) | 2025-07-30 |
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