EP3759356A1 - Electric coolant pump - Google Patents

Electric coolant pump

Info

Publication number
EP3759356A1
EP3759356A1 EP18825616.8A EP18825616A EP3759356A1 EP 3759356 A1 EP3759356 A1 EP 3759356A1 EP 18825616 A EP18825616 A EP 18825616A EP 3759356 A1 EP3759356 A1 EP 3759356A1
Authority
EP
European Patent Office
Prior art keywords
coolant
pump
electric
pump housing
control circuit
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
Application number
EP18825616.8A
Other languages
German (de)
French (fr)
Other versions
EP3759356B1 (en
Inventor
Conrad Nickel
Franz Pawellek
Jens Hoffmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nidec GPM GmbH
Original Assignee
Nidec GPM GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nidec GPM GmbH filed Critical Nidec GPM GmbH
Publication of EP3759356A1 publication Critical patent/EP3759356A1/en
Application granted granted Critical
Publication of EP3759356B1 publication Critical patent/EP3759356B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5806—Cooling the drive system
    • 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
    • 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5813—Cooling the control unit
    • 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
    • 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
    • F04D13/0653—Units comprising pumps and their driving means the pump being electrically driven the motor being flooded
    • 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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
    • F04D29/588—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps cooling or heating the machine
    • 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
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/20—Heat transfer, e.g. cooling
    • F05B2260/232—Heat transfer, e.g. cooling characterised by the cooling medium

Definitions

  • the invention relates to an electric coolant pump, in particular for the promotion of cooling fluid for cooling a combustion engine of a vehicle.
  • DE 698 18 392 T2 discloses such an electric coolant pump with a pump impeller mounted on a rotor shaft and an electric motor driving the rotor shaft.
  • the pump housing, in which the electric motor is housed, is flowed through by the required coolant.
  • the waste heat generated during operation of the electric motor in the rotor and stator can be transferred in this way to the coolant and the coolant pump can be cooled accordingly.
  • the control circuit of the electric motor is arranged in a separate, separate from the actual pump housing receiving chamber.
  • the electronic components of the control circuit are thus not in direct contact with the coolant.
  • the cooling effect of the coolant on the control circuit is thus at most low.
  • the electric coolant pump has a pump impeller for accelerating the coolant to be delivered, a rotor shaft on which the pump impeller is mounted, an electric motor with a stator and a rotor for driving the rotor shaft, a control circuit for controlling the electric motor and a pump housing which at least the control circuit and the electric motor receives.
  • the pump housing l is flowed through by the coolant to be delivered.
  • the coolant to be pumped flows around the stator, the rotor and the control circuit.
  • the pump housing is flowed through during operation of the coolant pump by the coolant to be delivered.
  • the pump impeller in addition to delivering the refrigerant in the actual refrigeration cycle (e.g., refrigeration cycle for cooling a combustion engine of a motor vehicle), the pump impeller generates a volumetric flow of the refrigerant through the pump casing.
  • the arranged within the pump housing components, in particular the stator, the rotor and the control circuit are thus surrounded by the coolant. The waste heat generated by said components can be dissipated efficiently in this way.
  • the control circuit can be designed as an electronic control unit (ECU).
  • ECU electronice control unit
  • an inflow opening for inflowing the coolant to be conveyed into the pump housing can be formed in the pump housing.
  • Such an inflow opening enables the defined supply of coolant.
  • the flow direction and the flow volume can be determined by the Dimensioning and the position of the inflow opening can be adjusted accordingly.
  • Particularly advantageous is the design of the inflow opening in the housing wall facing the pump running path.
  • the inflow opening is provided with a filter element for filtering the inflowing coolant.
  • the pump housing is filled with a dielectric coolant as coolant to be delivered.
  • these cooling liquid metal corrosion inhibiting components are added. In this way, a largely maintenance-free, robust and long-lasting functionality of the coolant pump is ensured. At the same time electrical Fried Herntechnischen the electric motor or the control circuit can be prevented.
  • the coolant pump may further comprise a sliding bearing for supporting the rotor shaft in the pump housing.
  • a sliding bearing for supporting the rotor shaft in the pump housing.
  • the pump housing may be made of a polymer material. Since the heat dissipation of the electric motor and the control circuit via the coolant to be delivered takes place, the heat dissipation capacity of the pump housing plays a minor role. It can therefore be dispensed with a metal housing and resort to a cost-effective pump housing made of a polymer material.
  • the pump housing in particular be made of a thermoplastic polymer material. This has the advantage that in a simple manner, the stator can be encapsulated by the material of the housing. The production of the coolant pump is simplified. The invention will be explained in more detail by embodiments with reference to the accompanying figures. It shows:
  • Fig. 1 is a sectional view of a first embodiment of the electric coolant pump
  • Fig. 2 is a sectional view of a second embodiment of the electric coolant pump.
  • Fig. 3 is a further sectional view of the first embodiment of the electric coolant pump.
  • the illustrated in Fig. 1 electric coolant pump 1 is used to promote a coolant in a cooling circuit shown schematically.
  • This cooling circuit can serve, for example, for cooling a combustion engine of a motor vehicle and consist essentially of cooling channels through which the coolant is supplied to the components to be cooled and then to a heat sink (eg radiator). These cooling channels are not shown in detail in the drawing figures.
  • the coolant may be, for example, a dielectric cooling fluid, the metal corrosion inhibiting components are buried.
  • This coolant is circulated through a pump impeller 2 of the coolant pump 1 within the cooling circuit.
  • the direction of movement of the coolant within the cooling circuit is indicated in the drawing figures by arrows.
  • the pump impeller 2 is mounted on a rotor shaft 3.
  • This rotor shaft 3 in turn is mounted via a sliding bearing 4 in a pump housing base body 5.
  • a cylindrical inner wall is formed in the pump housing base body 5, which serves as a support for the sliding bearing 4.
  • a rotor 7 of the electric motor 6 is flanged to the rotor shaft 3. More precisely, it is the rotor
  • stator 8 surrounds the rotor 7 radially outward. The stator 8 sets the rotor 7 in rotation and thus provides for the drive of the pump impeller second
  • the pump housing base 5 is substantially cup-shaped and forms together with a housing cover 9, the pump housing 10.
  • the housing cover 9 opposite end face of the pump housing base 5 is pierced by the rotor shaft 3, so that the impeller 2 outside the pump housing 10, but in close proximity and in parallel to the above-mentioned end face within the cooling circuit (ie in particular within a cooling channel) is located.
  • an inflow opening 11 is formed, which is provided with a filter 12 for filtering the inflowing coolant.
  • the inflow opening 11 is in this case arranged such that it is perpendicular to the end face within the range of a projection of the pump impeller 2.
  • control circuit 13 of the electric motor 6 is arranged in the pump impeller 2 opposite end portion of the pump housing 10, i. in the region of the housing cover 9, a control circuit 13 of the electric motor 6 is arranged.
  • the control circuit 13 is formed as an ECU.
  • the electronic components of the control circuit 13 are oriented in this case in the direction of the interior of the pump housing 10.
  • the pump housing 10 is formed fluid-tight with respect to the atmosphere, so that the coolant located within the pump housing 10 is not in the Environment can escape.
  • the pump housing base body 5 and the housing cover 9 are made of a thermoplastic polymer material.
  • the illustrated in Fig. 2 electric coolant pump 101 differs from the coolant pump 1 shown in Fig. 1 only by the formation of the rotor shaft bearing and by dispensing with the filter 12 in Zuglassöffhung 11. Instead of the sliding bearing 4 of FIG. 1, the rotor shaft 3 stored in this embodiment by a roller bearing 104 in the pump housing base body 5.
  • FIG. 3 shows a further sectional view of the electric coolant pump 1 shown in FIG. 1. While the inflow of the coolant through the cooling circuit is only shown schematically in FIG. 1, FIG. 3 shows a cover-side housing end closure 14, which together with forms a concrete configuration for a flow space for the coolant in the region of the coolant pump 1 the pump housing base 5 and the pump impeller 2.
  • a projection 15 is formed on the impeller-side housing closure 14, which serves as a thrust bearing for the rotor shaft 3. Together with the sliding bearing 4, this extension 15 thus ensures a stable Storage of the rotor shaft 3 and mounted on the rotor shaft 3 pump impeller
  • the axial bearing of the rotor shaft 3 is formed in the housing end 14 on the wingwheel side.

Abstract

The invention relates to an electric coolant pump (1), in particular for pumping cooling liquid for cooling an internal combustion engine of a vehicle. The electric coolant pump (1) has a pump impeller (2) for accelerating the coolant to be pumped, a rotor shaft (3), on which the pump impeller (2) is mounted, an electric motor (6) having a stator (8) and a rotor (7) for driving the rotor shaft (3), a control circuit (13) for controlling the electric motor (6), and a pump housing (10), which holds at least the control circuit (13) and the electric motor (6). The coolant to be pumped can flow through the pump housing (10). The coolant to be pumped thus flows around the stator (8), the rotor (7) and the control circuit (13).

Description

Beschreibung  description
Elektrische Kühlmittelpumpe Electric coolant pump
Die Erfindung betrifft eine elektrische Kühlmittelpumpe, insbesondere zur Förderung von Kühlflüssigkeit zur Kühlung eines V erbrennungsmotors eines Fahrzeugs. The invention relates to an electric coolant pump, in particular for the promotion of cooling fluid for cooling a combustion engine of a vehicle.
Durch DE 698 18 392 T2 ist eine derartige elektrische Kühlmittelpumpe mit einem auf einer Rotorwelle angebrachten Pumpenlaufrad und einem die Rotorwelle antreibenden Elektromotor bekannt. Das Pumpengehäuse, in dem der Elektromotor untergebracht ist, wird hierbei durch das zu fordernde Kühlmittel durchflossen. Die beim Betrieb des Elektromotors im Rotor und Stator erzeugte Abwärme kann auf diese Weise auf das Kühlmittel übertragen und die Kühlmittelpumpe entsprechend gekühlt werden. Dies wiederum führt zu einer W irkungsgradsteigerung des Elektromotors. Die Steuerschaltung des Elektromotors allerdings ist in einer separaten, vom eigentlichen Pumpengehäuse getrennten Aufnahmekammer angeordnet. Die elektronischen Komponenten der Steuerschaltung stehen damit nicht im unmittelbaren Kontakt zum Kühlmittel. Die Kühl Wirkung des Kühlmittels auf die Steuerschaltung ist somit allenfalls gering. DE 698 18 392 T2 discloses such an electric coolant pump with a pump impeller mounted on a rotor shaft and an electric motor driving the rotor shaft. The pump housing, in which the electric motor is housed, is flowed through by the required coolant. The waste heat generated during operation of the electric motor in the rotor and stator can be transferred in this way to the coolant and the coolant pump can be cooled accordingly. This in turn leads to an increase in the efficiency of the electric motor. However, the control circuit of the electric motor is arranged in a separate, separate from the actual pump housing receiving chamber. The electronic components of the control circuit are thus not in direct contact with the coolant. The cooling effect of the coolant on the control circuit is thus at most low.
Es ist daher Aufgabe der vorliegenden Erfindung, eine elektrische Kühlmittelpumpe mit hoher Wärmeabfuhr zu schaffen. It is therefore an object of the present invention to provide an electric coolant pump with high heat dissipation.
Die Aufgabe wird erfindungsgemäß durch eine elektrische Kühlmittelpumpe mit den Merkmalen des Anspruchs 1 gelöst. The object is achieved by an electric coolant pump with the features of claim 1.
Die elektrische Kühlmittelpumpe weist ein Pumpenlaufrad zur Beschleunigung des zu fördernden Kühlmittels, eine Rotorwelle, auf dem das Pumpenlaufrad angebracht ist, einen Elektromotor mit einem Stator und einem Rotor zum Antrieb der Rotorwelle, eine Steuerschaltung zur Steuerung des Elektromotors und ein Pumpengehäuse, welches zumindest die Steuerschaltung und den Elektromotor aufnimmt, auf. Das Pumpengehäuse l ist vom zu fördernden Kühlmittel durchfließbar. Das zu fördernde Kühlmittel umfließt hierbei den Stator, den Rotor und die Steuerschaltung. The electric coolant pump has a pump impeller for accelerating the coolant to be delivered, a rotor shaft on which the pump impeller is mounted, an electric motor with a stator and a rotor for driving the rotor shaft, a control circuit for controlling the electric motor and a pump housing which at least the control circuit and the electric motor receives. The pump housing l is flowed through by the coolant to be delivered. The coolant to be pumped flows around the stator, the rotor and the control circuit.
Das Pumpengehäuse wird beim Betrieb der Kühlmittelpumpe durch das zu fördernde Kühlmittel durchflossen. Mit anderen Worten erzeugt das Pumpenlaufrad neben der Förderung des Kühlmittels im eigentlichen Kühlkreislauf (z.B. Kühlkreislauf zur Kühlung eines V erbrennungsmotors eines Kraftfahrzeuges) einen Volumenstrom des Kühlmittels durch das Pumpengehäuse. Die innerhalb des Pumpengehäuses angeordneten Komponenten, insbesondere der Stator, der Rotor und die Steuerschaltung werden somit vom Kühlmittel umflossen. Die von den genannten Komponenten erzeugte Abwärme kann auf diese Weise effizient abgeführt werden. The pump housing is flowed through during operation of the coolant pump by the coolant to be delivered. In other words, in addition to delivering the refrigerant in the actual refrigeration cycle (e.g., refrigeration cycle for cooling a combustion engine of a motor vehicle), the pump impeller generates a volumetric flow of the refrigerant through the pump casing. The arranged within the pump housing components, in particular the stator, the rotor and the control circuit are thus surrounded by the coolant. The waste heat generated by said components can be dissipated efficiently in this way.
Hierbei ist hervorzuheben, dass nicht nur der Stator und der Rotor des Elektromotors vom Kühlmittel umflossen werden, sondern auch die Steuerschaltung. Dies bedeutet, dass die elektronischen Komponenten (z.B. elektronische Schaltkreiselemente, Leiterplatten,...) der Steuerschaltung im direkten Kontakt mit dem zu fördernden Kühlmittel stehen. Dieser direkte Kontakt führt zu einer besonders effektiven Kühlung der Steuerschaltung. Im Vergleich zu herkömmlichen elektrischen Kühlmittelpumpen, in denen ein derartiger Kontakt zwischen dem Kühlmittel und der Steuerschaltung fehlt, kann auf diese Weise die Leistungsdichte erhöht, das Bauvolumen verringert, die Zuverlässigkeit verbessert und/oder die Lebensdauer erhöht werden. It should be emphasized that not only the stator and the rotor of the electric motor are surrounded by the coolant, but also the control circuit. This means that the electronic components (e.g., electronic circuit elements, circuit boards, ...) of the control circuit are in direct contact with the coolant to be delivered. This direct contact leads to a particularly effective cooling of the control circuit. Compared to conventional electric coolant pumps, in which such a contact between the coolant and the control circuit is absent, in this way the power density can be increased, the volume of construction reduced, the reliability improved and / or the service life increased.
Die Steuerschaltung kann hierbei als elektronische Steuereinheit (electric control unit - ECU) ausgebildet sein. The control circuit can be designed as an electronic control unit (ECU).
Vorteilhafte W eiterbildungen der erfindungsgemäßen elektrischen Kühlmittelpumpe sind Gegenstand der abhängigen Ansprüche. Advantageous W eiterbildungen the electric coolant pump according to the invention are the subject of the dependent claims.
In einer vorteilhaften Ausführungsform kann im Pumpengehäuse eine Zuflussöffnung zum Einfließen des zu fördernden Kühlmittels in das Pumpengehäuse ausgebildet sein. Eine derartige Zuflussöffnung ermöglicht die definierte Zufuhr von Kühlmittel. Die Durchflussrichtung und das Durchflussvolumen können durch die Dimensionierung und die Lage der Zuflussöffnung entsprechend eingestellt werden. Besonders vorteilhaft ist die Ausbildung der Zuflussöffnung in der dem Pumpenlauffad zugewandten Gehäusewand. Dadurch kann die vom Pumpenlaufrad erzeugte Strömungsbewegung des zu fördernden Kühlmittels unmittelbar für eine Bewegung des Kühlmittels innerhalb des Pumpengehäuses sorgen. In an advantageous embodiment, an inflow opening for inflowing the coolant to be conveyed into the pump housing can be formed in the pump housing. Such an inflow opening enables the defined supply of coolant. The flow direction and the flow volume can be determined by the Dimensioning and the position of the inflow opening can be adjusted accordingly. Particularly advantageous is the design of the inflow opening in the housing wall facing the pump running path. As a result, the flow movement of the coolant to be conveyed generated by the pump impeller can directly ensure a movement of the coolant within the pump housing.
In einer bevorzugten Ausführungsform ist die Zuflussöffnung mit einem Filterelement zur Filterung des einfließenden Kühlmittels versehen. Dies führt zu einem Schutz der im Pumpengehäuse angeordneten Komponenten vor V erschmutzungen oder Schäden durch eventuell im Kühlkreislauf vorhandene V erunreinigungen. Beispielsweise kann auf diese Weise der Eintrag von Partikeln, der die Funktionsweise des Rotorwellenlagers oder des Rotors negativ beeinflussen, verhindert werden. In a preferred embodiment, the inflow opening is provided with a filter element for filtering the inflowing coolant. This leads to protection of the components arranged in the pump housing from contamination or damage by impurities possibly present in the cooling circuit. For example, in this way the entry of particles that adversely affect the operation of the rotor shaft bearing or the rotor can be prevented.
In einer bevorzugten Ausführungsform ist das Pumpengehäuse mit einer dielektrischen Kühlflüssigkeit als zu förderndes Kühlmittel befüllt. In vorteilhafter Weise sind dieser Kühlflüssigkeit Metallkorrosion hemmende Bestandteile beigemengt. Auf diese Weise wird eine weitgehend wartungsfreie, robuste und langlebige Funktionsfähigkeit der Kühlmittelpumpe gewährleistet. Zugleich können elektrische Fehlfünktionen des Elektromotors oder der Steuerschaltung verhindert werden. In a preferred embodiment, the pump housing is filled with a dielectric coolant as coolant to be delivered. Advantageously, these cooling liquid metal corrosion inhibiting components are added. In this way, a largely maintenance-free, robust and long-lasting functionality of the coolant pump is ensured. At the same time electrical Fehlfünktionen the electric motor or the control circuit can be prevented.
In einer bevorzugten Ausführungsform kann die Kühlmittelpumpe ferner ein Gleitlager zur Lagerung der Rotorwelle in dem Pumpengehäuse aufweisen. Neben der Kostenersparnis gegenüber dem auch möglichen Wälz- bzw. Kugellager vermindert sich auch der benötigte Bauraum. Einen entsprechend kompakten Aufbau kann die Kühlmittelpumpe besitzen. In a preferred embodiment, the coolant pump may further comprise a sliding bearing for supporting the rotor shaft in the pump housing. In addition to the cost savings compared to the possible rolling or ball bearing also reduces the required space. A correspondingly compact design can have the coolant pump.
In einer bevorzugten Ausführungsform kann das Pumpengehäuse aus einem Polymerwerkstoff gefertigt sein. Da die Wärmeabfuhr des Elektromotors und der Steuerschaltung über das zu fördernde Kühlmittel erfolgt, spielt das Wärmeabfuhrvermögen des Pumpengehäuses eine untergeordnete Rolle. Es kann daher auf ein Metallgehäuse verzichtet und auf ein kostengünstiges Pumpengehäuse aus einem Polymerwerkstoff zurückgegriffen werden. Hierbei kann das Pumpengehäuse insbesondere aus einem thermoplastischen Polymerwerkstoff gefertigt sein. Dies hat den Vorteil, dass auf einfache Weise ein Umspritzen des Stators durch den Werkstoff des Gehäuses erfolgen kann. Die Fertigung der Kühlmittelpumpe wird dadurch vereinfacht. Die Erfindung wird nachfolgend durch Ausführungsbeispiele anhand der begleitenden Figuren näher erläutert. Es zeigt: In a preferred embodiment, the pump housing may be made of a polymer material. Since the heat dissipation of the electric motor and the control circuit via the coolant to be delivered takes place, the heat dissipation capacity of the pump housing plays a minor role. It can therefore be dispensed with a metal housing and resort to a cost-effective pump housing made of a polymer material. Here, the pump housing in particular be made of a thermoplastic polymer material. This has the advantage that in a simple manner, the stator can be encapsulated by the material of the housing. The production of the coolant pump is simplified. The invention will be explained in more detail by embodiments with reference to the accompanying figures. It shows:
Fig· 1 eine Schnittansicht eines ersten Ausführungsbeispiels der elektrischen Kühlmittelpumpe; Fig. 1 is a sectional view of a first embodiment of the electric coolant pump;
Fig. 2 eine Schnitt ansicht eines zweiten Ausführungsbeispiels der elektrischen Kühlmittelpumpe; und Fig. 2 is a sectional view of a second embodiment of the electric coolant pump; and
Fig. 3 eine weitere Schnittansicht des ersten Ausführungsbeispiels der elektrischen Kühlmittelpumpe. Fig. 3 is a further sectional view of the first embodiment of the electric coolant pump.
Nachfolgend wird der Aufbau zweier beispielhafter Ausführungsformen der erfindungsgemäßen elektrischen Kühlmittelpumpe in Bezug auf die Zeichnungen beschrieben. Hereinafter, the structure of two exemplary embodiments of the electric coolant pump according to the invention will be described with reference to the drawings.
Die in Fig. 1 dargestellt elektrische Kühlmittelpumpe 1 dient zur Förderung eines Kühlmittels in einem schematisch dargestellten Kühlkreislauf. Dieser Kühlkreislauf kann beispielsweise zur Kühlung eines V erbrennungsmotors eines Kraftfahrzeugs dienen und im Wesentlichen aus Kühlkanälen bestehen, durch die das Kühlmittel den zu kühlenden Bauteilen und anschließend einer Wärmesenke (z.B. Kühler) zugeführt wird. Diese Kühlkanäle sind in den Zeichnungsfiguren nicht näher dargestellt. Das Kühlmittel kann beispielsweise eine dielektrische Kühlflüssigkeit sein, dem Metallkorrosion hemmende Bestandteile beigesetzt sind. Dieses Kühlmittel wird durch ein Pumpenlaufrad 2 der Kühlmittelpumpe 1 innerhalb des Kühlkreislaufs zirkuliert. Die Bewegungsrichtung des Kühlmittels innerhalb des Kühlkreislaufs ist in den Zeichnungsfiguren durch Pfeile angedeutet. Das Pumpenlaufrad 2 ist auf einer Rotorwelle 3 angebracht. Diese Rotorwelle 3 wiederum ist über ein Gleitlager 4 in einem Pumpengehäusegrundkörper 5 gelagert. Zur Abstützung des Gleitlagers 4 ist im Pumpengehäusegrundkörper 5 eine zylinderförmige Innenwandung ausgebildet, die als Auflager für das Gleitlager 4 dient. Ein ElektromotorThe illustrated in Fig. 1 electric coolant pump 1 is used to promote a coolant in a cooling circuit shown schematically. This cooling circuit can serve, for example, for cooling a combustion engine of a motor vehicle and consist essentially of cooling channels through which the coolant is supplied to the components to be cooled and then to a heat sink (eg radiator). These cooling channels are not shown in detail in the drawing figures. The coolant may be, for example, a dielectric cooling fluid, the metal corrosion inhibiting components are buried. This coolant is circulated through a pump impeller 2 of the coolant pump 1 within the cooling circuit. The direction of movement of the coolant within the cooling circuit is indicated in the drawing figures by arrows. The pump impeller 2 is mounted on a rotor shaft 3. This rotor shaft 3 in turn is mounted via a sliding bearing 4 in a pump housing base body 5. To support the sliding bearing 4, a cylindrical inner wall is formed in the pump housing base body 5, which serves as a support for the sliding bearing 4. An electric motor
6 treibt die Rotorwelle 3 und damit das Pumpenlauffad 2 an. Hierzu ist ein Rotor 7 des Elektromotors 6 an die Rotorwelle 3 angeflanscht. Genauer handelt es sich bei dem Rotor6 drives the rotor shaft 3 and thus the pump running path 2. For this purpose, a rotor 7 of the electric motor 6 is flanged to the rotor shaft 3. More precisely, it is the rotor
7 um einen topf- oder glockenförmigen Rotor 7, der mit einem ersten Endbereich mit der Rotorwelle 3 verbunden ist und mit einem zweiten Endbereich die oben genannte zylindrische Innenwandung radial außen umfasst. Ein drehfest mit dem Pumpengehäusegrundkörper 5 angeordneter Stator 8 umschließt den Rotor 7 radial außen. Der Stator 8 versetzt den Rotor 7 in Drehung und sorgt auf diese Weise für den Antrieb des Pumpenlaufrads 2. 7 around a pot-shaped or bell-shaped rotor 7, which is connected to a first end region with the rotor shaft 3 and with a second end region, the above-mentioned cylindrical inner wall radially outwardly. A rotatably arranged with the pump housing base 5 stator 8 surrounds the rotor 7 radially outward. The stator 8 sets the rotor 7 in rotation and thus provides for the drive of the pump impeller second
Der Pumpengehäusegrundkörper 5 ist im Wesentlichen topfförmig ausgebildet und bildet zusammen mit einem Gehäusedeckel 9 das Pumpengehäuse 10. Die dem Gehäusedeckel 9 gegenüberliegende Stirnfläche des Pumpengehäusegrundkörpers 5 wird von der Rotorwelle 3 durchbrochen, sodass das Pumpenlaufrad 2 außerhalb des Pumpengehäuses 10, aber in unmittelbarer Nähe und parallel zu der oben genannten Stirnfläche innerhalb des Kühlkreislaufs (also insbesondere innerhalb eines Kühlkanals) liegt. In dieser Stirnfläche ist eine Zuflussöffnung 11 ausgebildet, die mit einem Filter 12 zur Filterung des einfließenden Kühlmittels versehen ist. Die Zuflussöffnung 11 ist hierbei derart angeordnet, dass diese innerhalb des Bereichs einer Projektion des Pumpenlaufrads 2 senkrecht auf die Stirnfläche liegt. The pump housing base 5 is substantially cup-shaped and forms together with a housing cover 9, the pump housing 10. The housing cover 9 opposite end face of the pump housing base 5 is pierced by the rotor shaft 3, so that the impeller 2 outside the pump housing 10, but in close proximity and in parallel to the above-mentioned end face within the cooling circuit (ie in particular within a cooling channel) is located. In this end face an inflow opening 11 is formed, which is provided with a filter 12 for filtering the inflowing coolant. The inflow opening 11 is in this case arranged such that it is perpendicular to the end face within the range of a projection of the pump impeller 2.
Im dem Pumpenlaufrad 2 gegenüberliegenden Endbereich des Pumpengehäuses 10, d.h. im Bereich des Gehäusedeckels 9 ist eine Steuerschaltung 13 des Elektromotors 6 angeordnet. Die Steuerschaltung 13 ist als ECU ausgebildet. Die elektronischen Komponenten der Steuerschaltung 13 sind hierbei in Richtung des Inneren des Pumpengehäuses 10 orientiert. In the pump impeller 2 opposite end portion of the pump housing 10, i. in the region of the housing cover 9, a control circuit 13 of the electric motor 6 is arranged. The control circuit 13 is formed as an ECU. The electronic components of the control circuit 13 are oriented in this case in the direction of the interior of the pump housing 10.
Das Pumpengehäuse 10 ist gegenüber der Atmosphäre fluiddicht ausgebildet, sodass das sich innerhalb des Pumpengehäuses 10 befindende Kühlmittel nicht in die Umgebung entweichen kann. Der Pumpengehäusegrundkörper 5 und der Gehäusedeckel 9 sind aus einem thermoplastischen Polymerwerkstoff gefertigt. The pump housing 10 is formed fluid-tight with respect to the atmosphere, so that the coolant located within the pump housing 10 is not in the Environment can escape. The pump housing base body 5 and the housing cover 9 are made of a thermoplastic polymer material.
Bei der Zirkulation des Kühlmittels im Kühlkreislauf durch das Pumpenrad 2 wird ein Teil des Kühlmittels durch die Zuflussöffnung 11 in das Pumpengehäuse 10 eingebracht, umfließt die innerhalb des Pumpengehäuses 10 angebrachten Komponenten und verlässt das Pumpengehäuse 10 im Bereich des Gleitlagers 4 und dem Durchbruch der Rotorwelle 3 durch die Stirnseite im Bereich des Pumpenrads 2 wieder. Der Kühlmittelfluss des Kühlmittels innerhalb des Pumpengehäuses 10 ist in den Zeichnungsfiguren ebenfalls durch Pfeile dargestellt. Hierbei umfließt das eingebrachte Kühlmittel insbesondere den Stator 8, die Steuerschaltung 13 und den Rotor 7, um anschließend das Pumpengehäuse 10 im Bereich des Gleitlagers 4 wieder zu verlassen. Der Rotor 7, der Stator 8 und die elektronischen Komponenten der Steuerschaltung 13 stehen damit im direkten Kontakt mit dem zu fördernden Kühlmittel. Dieser direkte Kontakt führt zu einer besonders effektiven Kühlung der Komponenten. During the circulation of the coolant in the cooling circuit through the impeller 2, a portion of the coolant is introduced through the inflow opening 11 in the pump housing 10, flows around the components mounted within the pump housing 10 and leaves the pump housing 10 in the region of the sliding bearing 4 and the rotor shaft 3 through the front side in the region of the impeller 2 again. The coolant flow of the coolant within the pump housing 10 is also shown in the drawing figures by arrows. Here, the introduced coolant flows around in particular the stator 8, the control circuit 13 and the rotor 7, in order subsequently to leave the pump housing 10 again in the region of the sliding bearing 4. The rotor 7, the stator 8 and the electronic components of the control circuit 13 are thus in direct contact with the coolant to be delivered. This direct contact leads to a particularly effective cooling of the components.
Die in Fig. 2 dargestellt elektrische Kühlmittelpumpe 101 unterscheidet sich von der in Fig. 1 dargestellten Kühlmittelpumpe 1 lediglich durch die Ausbildung der Rotorwellenlagerung und durch den Verzicht auf den Filter 12 in der Zuführöffhung 11. Anstelle des Gleitlagers 4 aus Fig. 1 wird die Rotorwelle 3 in diesem Ausführungsform durch eine Wälzlagerung 104 im Pumpengehäusegrundkörper 5 gelagert. The illustrated in Fig. 2 electric coolant pump 101 differs from the coolant pump 1 shown in Fig. 1 only by the formation of the rotor shaft bearing and by dispensing with the filter 12 in Zuführöffhung 11. Instead of the sliding bearing 4 of FIG. 1, the rotor shaft 3 stored in this embodiment by a roller bearing 104 in the pump housing base body 5.
Fig. 3 stellt eine weitere Schnittansicht der in Fig. 1 dargestellten elektrischen Kühlmittelpumpe 1 dar. Während in Fig. 1 der Zufluss des Kühlmittels über den Kühlkreislauf lediglich schematisch dargestellt ist, zeigt Fig. 3 einen als Deckel ausgebildeten flügelradseitigen Gehäuseabschluss 14, der zusammen mit dem Pumpengehäusegrundkörper 5 und dem Pumpenlaufrad 2 eine konkrete Ausgestaltung für einen Strömungsraum für das Kühlmittel im Bereich der Kühlmittelpumpe 1 bildet. FIG. 3 shows a further sectional view of the electric coolant pump 1 shown in FIG. 1. While the inflow of the coolant through the cooling circuit is only shown schematically in FIG. 1, FIG. 3 shows a cover-side housing end closure 14, which together with forms a concrete configuration for a flow space for the coolant in the region of the coolant pump 1 the pump housing base 5 and the pump impeller 2.
Koaxial zur Mittelachse der Rotorwelle 3 ist am flügelradseitigen Gehäuseabschluss 14 ein Fortsatz 15 ausgebildet, der als Axiallager für die Rotorwelle 3 dient. Zusammen mit dem Gleitlager 4 sorgt dieser Fortsatz 15 damit für eine stabile Lagerung der Rotorwelle 3 und des auf der Rotorwelle 3 angebrachten PumpenlaufradsCoaxially to the central axis of the rotor shaft 3, a projection 15 is formed on the impeller-side housing closure 14, which serves as a thrust bearing for the rotor shaft 3. Together with the sliding bearing 4, this extension 15 thus ensures a stable Storage of the rotor shaft 3 and mounted on the rotor shaft 3 pump impeller
2. Second
In der in Fig. 3 dargestellten Ausführungsform der Kühlmittelpumpe 1 ist das Axiallager der Rotorwelle 3 im flügelradseitigen Gehäuseabschluss 14 ausgebildet. Es ist jedoch auch möglich, das Axiallager der Welle im Pumpengehäusegrundkörper 5 oder gegebenenfalls auch am Gehäusedeckel 9 auszubilden. In the embodiment of the coolant pump 1 shown in FIG. 3, the axial bearing of the rotor shaft 3 is formed in the housing end 14 on the wingwheel side. However, it is also possible to form the axial bearing of the shaft in the pump housing base body 5 or possibly also on the housing cover 9.
BEZUGSZEICHENLISTE LIST OF REFERENCE NUMBERS
1 Kühlmittelpumpe 1 coolant pump
2 Pumpenlaufrad  2 pump impeller
3 Rotorwelle  3 rotor shaft
4 Gleitlager  4 plain bearings
5 Pumpengehäusegrundkörper  5 pump housing bases
6 Elektromotor  6 electric motor
7 Rotor  7 rotor
8 Stator  8 stator
9 Gehäusedeckel  9 housing cover
10 Pumpengehäuse  10 pump housings
11 Zuflussöffnung  11 inflow opening
12 Filter  12 filters
13 Steuerschaltung  13 control circuit
14 flügelradseitiger Gehäuseabschluss  14 impeller-side housing termination
15 Fortsatz  15 extension
101 Kühlmittelpumpe  101 coolant pump
104 Wälzlagerung  104 rolling bearing

Claims

Ansprüche claims
1. Elektrische Kühlmittelpumpe (1) mit: einem Pumpenlaufrad (2) zur Beschleunigung des zu fördernden Kühlmittels; einer Rotorwelle (3), auf dem das Pumpenlaufrad (2) angebracht ist, einem Elektromotor (6) zum Antrieb der Rotorwelle (3), welcher einen Stator (8) und einen Rotor (7) aufweist, eine Steuerschaltung (13) zur Steuerung des Elektromotors (6), und einem Pumpengehäuse (10), welches zumindest die Steuerschaltung (13) und denAn electric coolant pump (1) comprising: a pump impeller (2) for accelerating the coolant to be delivered; a rotor shaft (3) on which the pump impeller (2) is mounted, an electric motor (6) for driving the rotor shaft (3) having a stator (8) and a rotor (7), a control circuit (13) for control the electric motor (6), and a pump housing (10) which at least the control circuit (13) and the
Elektromotor (6) aufhimmt, wobei das Pumpengehäuse (10) vom zu fordernden Kühlmittel durchfließbar ist, und wobei das zu fördernde Kühlmittel hierbei den Stator (8), den Rotor (6) und die Steuerschaltung (13) umfließt. Electric motor (6) aufhimmt, wherein the pump housing (10) can be flowed through by the coolant to be demanded, and wherein the coolant to be conveyed in this case flows around the stator (8), the rotor (6) and the control circuit (13).
2. Elektrische Kühlmittelpumpe nach Anspruch 1 , wobei im Pumpengehäuse eine Zuflussöffnung (11) zum Einfließen des zu fördernden Kühlmittels in das Pumpengehäuse (10) ausgebildet ist. 2. An electric coolant pump according to claim 1, wherein in the pump housing an inflow opening (11) for inflowing the coolant to be conveyed into the pump housing (10) is formed.
3. Elektrische Kühlmittelpumpe nach Anspruch 2, wobei die Zuflussöffnung (11) in der dem Pumpenlaufrad (2) zugewandten Gehäusewand des Pumpengehäuses (10) ausgebildet ist. 3. An electric coolant pump according to claim 2, wherein the inflow opening (11) in the pump impeller (2) facing the housing wall of the pump housing (10) is formed.
4. Elektrische Kühlmittelpumpe nach einem der Ansprüche 2 oder 3, wobei die Zuflussöffnung (11) mit einem Filter (12) zur Filterung des einfließenden Kühlmittels versehen ist. 4. An electric coolant pump according to one of claims 2 or 3, wherein the inflow opening (11) is provided with a filter (12) for filtering the inflowing coolant.
5. Elektrische Kühlmittelpumpe nach einem der vorhergehenden Ansprüche, wobei das Pumpengehäuse (10) mit einer dielektrischen Kühlflüssigkeit als zu forderndes Kühlmittel befällt ist. 5. An electric coolant pump according to one of the preceding claims, wherein the pump housing (10) is filled with a dielectric cooling liquid as to be demanded coolant.
6. Elektrische Kühlmittelpumpe nach einem der vorhergehenden Ansprüche mit einem Gleitlager (4) zur Lagerung der Rotorwelle (3) in dem Pumpengehäuse6. An electric coolant pump according to one of the preceding claims with a sliding bearing (4) for supporting the rotor shaft (3) in the pump housing
(10). (10).
7, Elektrische Kühlmittelpumpe nach einem der vorhergehenden Ansprüche, wobei das Pumpengehäuse (10) aus einem Polymerwerkstoff gefertigt ist. 7, Electric coolant pump according to one of the preceding claims, wherein the pump housing (10) is made of a polymer material.
8. Elektrische Kühlmittelpumpe nach Anspruch 7, wobei der Stator (8) mit dem8. An electric coolant pump according to claim 7, wherein the stator (8) with the
Polymerwerkstoff umspritzt ist. Polymer material is encapsulated.
EP18825616.8A 2018-03-02 2018-12-13 Electric coolant pump Active EP3759356B1 (en)

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DE102018104770.3A DE102018104770A1 (en) 2018-03-02 2018-03-02 Electric coolant pump
PCT/EP2018/084743 WO2019166118A1 (en) 2018-03-02 2018-12-13 Electric coolant pump

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EP3759356B1 EP3759356B1 (en) 2022-11-23

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EP (1) EP3759356B1 (en)
CN (1) CN111801501A (en)
BR (1) BR112020017549A2 (en)
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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021214755A1 (en) * 2021-12-21 2023-06-22 Vitesco Technologies GmbH Housing device for a fluid pump
WO2023150060A1 (en) * 2022-02-01 2023-08-10 Ticona Llc Polymer composition with a high degree of thermal shock resistance
CN114458608B (en) * 2022-02-10 2024-01-30 瑞希特(浙江)科技股份有限公司 Pipeline shielding electric pump with outstanding cooling effect

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4198191A (en) * 1978-04-07 1980-04-15 General Electric Company Vaporization cooled dielectric fluid pump
US5053664A (en) * 1989-01-18 1991-10-01 Aisan Kogyo Kabushiki Kaisha Motor-driven fuel pump
WO1997008807A1 (en) * 1995-08-24 1997-03-06 Sulzer Electronics Ag Electric motor
US6011331A (en) * 1997-04-22 2000-01-04 Emerson Electric Co. Electric motor having an improved airflow cooling system
US5997261A (en) * 1997-10-31 1999-12-07 Siemens Canada Limited Pump motor having fluid cooling system
EP0913582B1 (en) 1997-10-31 2003-09-24 Siemens VDO Automotive Inc. Pump motor having sumbersible stator and rotor
US5949171A (en) * 1998-06-19 1999-09-07 Siemens Canada Limited Divisible lamination brushless pump-motor having fluid cooling system
US6447270B1 (en) * 1998-09-17 2002-09-10 Walbro Corporation Brushless coolant pump and cooling system
US6319116B1 (en) * 1999-04-12 2001-11-20 Inclose Design, Inc. Memory storage device docking adapter having hinged air filter
JP4060252B2 (en) * 2003-08-25 2008-03-12 山洋電気株式会社 Fan motor
US7210304B2 (en) * 2005-02-09 2007-05-01 General Motors Corporation Cooling arrangements for integrated electric motor-inverters
AT502566B1 (en) 2005-10-13 2007-08-15 Tcg Unitech Systemtechnik Gmbh WATER PUMP
US20070140844A1 (en) * 2005-12-19 2007-06-21 Nidec Corporation Axial Flow Fan
DE102007055907A1 (en) * 2007-12-21 2009-06-25 Geräte- und Pumpenbau GmbH Merbelsrod Coolant pump
DE102009009898A1 (en) * 2009-02-20 2010-08-26 Bayerische Motoren Werke Aktiengesellschaft Coolant pump for vehicles
US8080909B2 (en) * 2009-05-19 2011-12-20 Ford Global Technologies, Llc Cooling system and method for an electric motor
US9562534B2 (en) * 2012-05-04 2017-02-07 Ghsp, Inc. In-line dual pump and motor with control device
TW201346141A (en) * 2012-05-10 2013-11-16 Ji Ee Industry Co Ltd Electric water pump
DE102013211181B3 (en) 2013-06-14 2014-08-21 E.G.O. Elektro-Gerätebau GmbH Pump for conveying fluid, particularly impeller pump or radial pump, has additional chamber provided adjacent to pump chamber and partly in pump housing for fluid volume, where rotor shaft partially runs through fluid volume
CN105186725A (en) * 2014-05-28 2015-12-23 德昌电机(深圳)有限公司 Electric fluid pump and motor stator structure therefor
DE102015214788A1 (en) 2015-08-03 2017-02-09 Magna Powertrain Bad Homburg GmbH Electric compressor and method of making an electric compressor
CN206175322U (en) * 2016-11-08 2017-05-17 常州市凯程精密汽车部件有限公司 Electronic pump with interior circulative cooling return circuit
CN107228074B (en) * 2017-07-31 2019-12-17 广东威灵汽车部件有限公司 Electronic water pump

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CN111801501A (en) 2020-10-20
BR112020017549A2 (en) 2020-12-22
US11708843B2 (en) 2023-07-25
EP3759356B1 (en) 2022-11-23
WO2019166118A1 (en) 2019-09-06
US20210003147A1 (en) 2021-01-07
DE102018104770A1 (en) 2019-09-05

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