EP3374640B1 - Electric automotive vacuum pump - Google Patents
Electric automotive vacuum pump Download PDFInfo
- Publication number
- EP3374640B1 EP3374640B1 EP15794896.9A EP15794896A EP3374640B1 EP 3374640 B1 EP3374640 B1 EP 3374640B1 EP 15794896 A EP15794896 A EP 15794896A EP 3374640 B1 EP3374640 B1 EP 3374640B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- opening
- outlet
- inlet
- rotor
- 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.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 239000012530 fluid Substances 0.000 description 21
- 238000002485 combustion reaction Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 208000000223 Solitary Kidney Diseases 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
- F04C18/3441—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
-
- 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
- F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
- F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
-
- 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
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/04—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids specially adapted for reversible pumps
Definitions
- the present invention relates to an electric automotive vacuum pump with a brushless, electronically commutated, sensorless drive motor.
- the electric vehicle vacuum pump has a pump housing which forms a pump chamber in which a pump rotor rotates in a compressive manner.
- the pump rotor can be rotated in both a forward and reverse direction.
- the electric automotive vacuum pump further has outlet and inlet openings for a forward and a reverse direction of rotation of the rotor.
- a vacuum pump is known that is driven by an electronically commutated brushless motor with position sensors.
- a stationary electric compressor is known as part of a heat pump, where the compressor can be operated in both directions in order to be able to use the heat pump for both cooling and heating.
- An electric vehicle vacuum pump generates a negative pressure of, for example, absolute 100 millibars in a motor vehicle (motor vehicle), regardless of the operating state of an internal combustion engine, which is required, for example, to operate a pneumatic brake booster and/or other pneumatically operated auxiliary units.
- the electrical power of the drive motor is typically in the range of 100 W for small vacuum pumps and several 100 W for large vacuum pumps.
- the preferred drive motor is due to the low manufacturing costs compared to electronically commutated motors Brush motors used.
- the constant grinding contact of the brushes on the slip ring results in wear and a large amount of heat.
- a brush motor therefore has a limited maximum running time.
- the object of the present invention is therefore to create an electric vehicle vacuum pump which has a longer running time and, despite all this, can be produced inexpensively.
- the drive motor is formed by a brushless, electronically commutated, sensorless drive motor.
- Sensors in the sense of the invention are understood here to be sensors which are generally used for brushless, electronically commutated drive motors in order to detect the position of the rotor, particularly when the drive motor is started.
- these sensors are not used, so that costs can be saved in this regard.
- the vacuum pump or the drive motor is sensorless with regard to commutation, i.e. without rotor position sensors. As a result, there is a fundamental risk that the rotor can be moved in both directions.
- the outlet opening is provided in the direction of rotation of the rotor directly in front of a separating section in which the pump rotor rests fluidly sealingly against a pump chamber wall. This allows a maximum amount of fluid to be pumped out.
- the efficiency of the vacuum pump is high in both directions of rotation.
- the inlet opening is provided in the direction of rotation immediately after a separating section in which the pump rotor rests fluidly sealingly against a pump chamber wall. This allows a maximum amount of fluid to be sucked in. This increases the efficiency of the vacuum pump.
- the forward exhaust port and the reverse inlet port are formed by a single opening.
- a division of the flow paths into inlet flow and outlet flow is provided behind the opening, viewed in the outlet direction.
- only a single opening is provided in an end wall of the pump housing for the forward outlet opening and the reverse inlet opening.
- the forward inlet opening and the reverse outlet opening are formed by a single opening.
- a division of the flow paths into inlet flow and outlet flow is only provided behind the opening, viewed in the outlet direction.
- only a single opening is provided in an end wall of the pump housing for the forward inlet opening and the reverse outlet opening.
- the separating section is preferably designed as an oscillating gap.
- a circumferential section is used as an oscillating gap in the sense of the invention Pump room wall understood, which is in contact with an outer rotor surface and has the same radius as the rotor. This has the advantage that a fluidic seal between the rotor and the pump chamber wall is not only linear, but is created over a surface, so that an improved fluidic seal is achieved.
- the vacuum pump is an oil-lubricated pump.
- oil lubrication improves pneumatic sealing or pneumatic efficiency and reduces wear.
- the vacuum pump is designed as a dry-running pump. Dry-running in the sense of the invention means that the rotor is not lubricated with oil. This has the advantage that no additional oil supply has to be provided for operation and that no oil has to be separated from the compressed fluid.
- the pump has at least one slider which forms two blades.
- the pump has five blades which are formed by five slides.
- the slide of the pump is preferably made of plastic.
- Plastic has the advantage that it is easy and inexpensive to produce.
- the slider is made from a graphite-based material.
- an electric vehicle vacuum pump 10 is shown, which is used to provide a vacuum with an absolute pressure of, for example, 100 millibars and lower in a motor vehicle.
- the vacuum is mainly used as potential energy for actuators, for example for a pneumatic brake booster or other pneumatic automotive actuators.
- An electric drive for vehicle vacuum pumps is increasingly required because the vehicle internal combustion engine does not run constantly during vehicle operation.
- the electric vehicle vacuum pump 10 has a pump housing 12 and a brushless, electronically commutated, sensorless drive motor 13.
- This drive motor 13 drives, via a shaft 14, a pump rotor 18 provided in a pump chamber 16 formed by the pump housing 12.
- Two fluid inlet lines 20 1 , 20 2 and two fluid outlet lines 22 1 , 22 2 are formed in the pump housing 12.
- the two fluid outlet lines 22 1 , 22 2 are brought together in the outlet direction in the pump housing 12 to form a common overall fluid outlet line 24.
- the two fluid inlet lines 20 1 , 20 2 are branched in the inlet direction in the pump housing 12 from a total fluid inlet line 26.
- outlet check valves 28 1 , 28 2 in the outlet direction before the lines are brought together which block in an inlet direction and release a fluid flow in an outlet direction.
- an inlet check valve 30 1 , 30 2 is provided, which blocks in an outlet direction and releases a fluid flow in an inlet direction.
- FIG 2 shows the pump housing 12 with the pump chamber 16 formed therein.
- the pump rotor 18 is provided eccentrically to the pump chamber 16, which can be rotated in both a forward and a backward direction.
- the forward direction is a direction of rotation of the in Figure 2 pump rotor 18 shown, which rotates counterclockwise. Accordingly, a direction of rotation of the in Figure 2 shown pump rotor 18 clockwise in a reverse direction.
- This pump rotor 18 is designed as a rotary valve.
- the rotary slide is formed from a rotor body 32 and a slide 34, which can be moved orthogonally to a rotation axis 33 of the pump rotor 18 through a center of the rotor body 32 and forms two blades.
- the slide 34 has ends 36, which form the wing ends and are in constant contact with a pump chamber wall 38 during the rotation of the pump rotor 18.
- the rotor body 32 is arranged eccentrically in the pump chamber 16 in such a way that a rotor outer surface 40 of the pump rotor 18 rests in a fluid sealing manner against the pump chamber wall 38 and thus forms a separating section 42.
- a single kidney-shaped opening 46, 47 is provided immediately before and after the separating section 42, which serves as either an inlet or an outlet opening 46, 47 depending on the direction of travel of the pump rotor 18.
- Each opening 46, 47 is fluidly connected to a pump inlet 48 via one of the fluid inlet lines 20 1 , 20 2 .
- Every opening 46, 47 is also fluidly connected to a pump outlet 49 via one of the fluid outlet lines 22 1 , 22 2 .
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Description
Die vorliegende Erfindung betrifft eine elektrische Kfz-Vakuumpumpe mit einem bürstenlosen, elektronisch kommutierten, sensorlosen Antriebsmotor.The present invention relates to an electric automotive vacuum pump with a brushless, electronically commutated, sensorless drive motor.
Die elektrische Kfz-Vakuumpumpe weist ein Pumpengehäuse auf, welches einen Pumpraum ausbildet, in welchem ein Pumpenrotor verdichtend rotiert. Der Pumpenrotor ist sowohl in einer Vorwärts- als auch in einer Rückwärtsdrehrichtung rotierbar. Die elektrische Kfz-Vakuumpumpe weist weiter Auslass- und Einlassöffnungen für eine Vorwärts- und eine Rückwärtsdrehrichtung des Rotors auf.The electric vehicle vacuum pump has a pump housing which forms a pump chamber in which a pump rotor rotates in a compressive manner. The pump rotor can be rotated in both a forward and reverse direction. The electric automotive vacuum pump further has outlet and inlet openings for a forward and a reverse direction of rotation of the rotor.
Aus
Aus
Eine elektrische Kfz-Vakuumpumpe generiert in einem Kraftfahrzeug (Kfz) unabhängig von dem Betriebszustand eines Verbrennungsmotors einen Unterdruck von beispielsweise absolut 100 Millibar, der beispielsweise zum Betrieb eines pneumatischen Bremskraftverstärkers und/oder anderer pneumatisch betriebener Nebenaggregate benötigt wird. Bei einer elektrischen Kfz-Vakuumpumpe liegt die elektrische Leistung des Antriebsmotors typischerweise im Bereich von 100 W bei kleinen Vakuumpumpen und bei mehreren 100 W bei großen Vakuumpumpen.An electric vehicle vacuum pump generates a negative pressure of, for example, absolute 100 millibars in a motor vehicle (motor vehicle), regardless of the operating state of an internal combustion engine, which is required, for example, to operate a pneumatic brake booster and/or other pneumatically operated auxiliary units. In an electric automotive vacuum pump, the electrical power of the drive motor is typically in the range of 100 W for small vacuum pumps and several 100 W for large vacuum pumps.
Als Antriebsmotor werden aufgrund der im Vergleich zu elektronisch kommutierten Motoren geringen Herstellungskosten, bevorzugt Bürstenmotoren verwendet. Durch den ständig schleifenden Kontakt der Bürsten an dem Schleifring ergeben sich Verschleiß und eine große Hitzeentwicklung. Ein Bürstenmotor hat daher eine begrenzte maximale Laufzeit.The preferred drive motor is due to the low manufacturing costs compared to electronically commutated motors Brush motors used. The constant grinding contact of the brushes on the slip ring results in wear and a large amount of heat. A brush motor therefore has a limited maximum running time.
Die Aufgabe der vorliegenden Erfindung liegt somit darin, eine elektrische Kfz-Vakuumpumpe zu schaffen, welche eine höhere Laufzeit aufweist und trotz alledem preiswert herstellbar ist.The object of the present invention is therefore to create an electric vehicle vacuum pump which has a longer running time and, despite all this, can be produced inexpensively.
Diese Aufgabe wird durch eine elektrische Kfz-Vakuumpumpe nach dem unabhängigen Anspruch 1 gelöst.This task is solved by an electric vehicle vacuum pump according to independent claim 1.
Bei dieser elektrischen Kfz-Vakuumpumpe ist der Antriebsmotor durch einen bürstenlosen, elektronisch kommutierten, sensorlosen Antriebsmotor gebildet. Als Sensoren im Sinne der Erfindung werden hier Sensoren verstanden, welche in der Regel für bürstenlose, elektronisch kommutierte Antriebsmotoren verwendet werde, um die Lage des Rotors insbesondere bei einem Start des Antriebsmotors zu detektieren. Bei der vorliegenden Erfindung werden diese Sensoren jedoch nicht verwendet, so dass in dieser Hinsicht Kosten dafür eingespart werden können. Die Vakuumpumpe bzw. der Antriebsmotor ist bezüglich der Kommutierung sensorlos, also ohne Rotorpositionssensoren ausgestattet. Als Folge davon besteht grundsätzlich die Gefahr, dass der Rotor in beide Drehrichtungen angefahren werden kann.In this electric vehicle vacuum pump, the drive motor is formed by a brushless, electronically commutated, sensorless drive motor. Sensors in the sense of the invention are understood here to be sensors which are generally used for brushless, electronically commutated drive motors in order to detect the position of the rotor, particularly when the drive motor is started. However, in the present invention, these sensors are not used, so that costs can be saved in this regard. The vacuum pump or the drive motor is sensorless with regard to commutation, i.e. without rotor position sensors. As a result, there is a fundamental risk that the rotor can be moved in both directions.
Gelöst wird dieses Problem dadurch, dass sowohl für eine Vorwärts- als auch Rückwärtsdrehrichtung Einlass- und Auslassöffnungen vorgesehen sind. Da die elektrische Vakuumpumpe vorzugsweise symmetrisch aufgebaut ist, ist der Wirkungsgrad der Vakuumpumpe in der Vorwärts- und der Rückwärtsdrehrichtung gleich. Da ein elektronisch kommutierter Antriebsmotor ohne Kontakt zu dem Rotor arbeitet, sind kein mechanischer Verschleiß und keine Kommutator-Wärmeentwicklung vorhanden. Die Lebensdauer der elektrischen Vakuumpumpe wird damit, trotz geringer Kosten, erheblich gesteigert.This problem is solved by providing inlet and outlet openings for both forward and reverse directions of rotation. Since the electric vacuum pump is preferably constructed symmetrically, the efficiency of the vacuum pump is the same in the forward and reverse directions of rotation. Since an electronically commutated drive motor works without contact with the rotor, there is no mechanical wear and no commutator heat generation available. The service life of the electric vacuum pump is therefore significantly increased, despite the low cost.
Die Auslassöffnung ist in Rotationsrichtung des Rotors unmittelbar vor einem Trennabschnitt vorgesehen, in welchem der Pumpenrotor fluidisch abdichtend an einer Pumpraum-Wand anliegt. Hierdurch kann eine maximale Fluidmenge ausgefördert werden. Der Wirkungsgrad der Vakuumpumpe ist in beiden Drehrichtungen hoch.The outlet opening is provided in the direction of rotation of the rotor directly in front of a separating section in which the pump rotor rests fluidly sealingly against a pump chamber wall. This allows a maximum amount of fluid to be pumped out. The efficiency of the vacuum pump is high in both directions of rotation.
Die Einlassöffnung ist in Rotationsrichtung unmittelbar nach einem Trennabschnitt vorgesehen, in welchem der Pumpenrotor fluidisch abdichtend an einer Pumpraum-Wand anliegt. Hierdurch kann eine maximale Fluidmenge angesaugt werden. Der Wirkungsgrad der Vakuumpumpe wird damit gesteigert.The inlet opening is provided in the direction of rotation immediately after a separating section in which the pump rotor rests fluidly sealingly against a pump chamber wall. This allows a maximum amount of fluid to be sucked in. This increases the efficiency of the vacuum pump.
Die Vorwärts-Auslassöffnung und die Rückwärts-Einlassöffnung sind durch eine einzige Öffnung gebildet. Eine Aufteilung der Strömungswege in Einlassströmung und Auslassströmung ist, gesehen in Auslassrichtung, hinter der Öffnung vorgesehen. Hierdurch ist für die Vorwärts-Auslassöffnung und die Rückwärts-Einlassöffnung lediglich eine einzige Öffnung in einer Stirnwand des Pumpengehäuses vorgesehen.The forward exhaust port and the reverse inlet port are formed by a single opening. A division of the flow paths into inlet flow and outlet flow is provided behind the opening, viewed in the outlet direction. As a result, only a single opening is provided in an end wall of the pump housing for the forward outlet opening and the reverse inlet opening.
Die Vorwärts-Einlassöffnung und die Rückwärts-Auslassöffnung sind durch eine einzige Öffnung gebildet. Eine Aufteilung der Strömungswege in Einlassströmung und Auslassströmung ist, gesehen in Auslassrichtung, erst hinter der Öffnung vorgesehen. Hierdurch ist für die Vorwärts-Einlassöffnung und die Rückwärts-Auslassöffnung lediglich eine einzige Öffnung in einer Stirnwand des Pumpengehäuses vorgesehen.The forward inlet opening and the reverse outlet opening are formed by a single opening. A division of the flow paths into inlet flow and outlet flow is only provided behind the opening, viewed in the outlet direction. As a result, only a single opening is provided in an end wall of the pump housing for the forward inlet opening and the reverse outlet opening.
Vorzugsweise ist der Trennabschnitt als Schmiegespalt ausgebildet. Als Schmiegespalt im Sinne der Erfindung wird ein Umfangs-Abschnitt in der Pumpraum-Wand verstanden, welcher in Kontakt mit einer Rotoraußenfläche ist und den gleichen Radius wie der Rotor aufweist. Dies hat den Vorteil, dass eine fluidische Abdichtung zwischen Rotor und Pumpraum-Wand nicht nur linienförmig, sondern über eine Fläche hergestellt ist, so dass eine verbesserte fluidische Abdichtung bewirkt wird.The separating section is preferably designed as an oscillating gap. A circumferential section is used as an oscillating gap in the sense of the invention Pump room wall understood, which is in contact with an outer rotor surface and has the same radius as the rotor. This has the advantage that a fluidic seal between the rotor and the pump chamber wall is not only linear, but is created over a surface, so that an improved fluidic seal is achieved.
In einem bevorzugten Ausführungsbeispiel der Erfindung ist die Vakuumpumpe eine ölgeschmierte Pumpe. Eine solche Pumpe hat den Vorteil, dass diese Pumpe aufgrund der relativ einfachen Ausgestaltung preiswert herstellbar ist. Die Ölschmierung verbessert die pneumatische Abdichtung bzw. den pneumatischen Wirkungsgrad und verringert den Verschleiß.In a preferred embodiment of the invention, the vacuum pump is an oil-lubricated pump. Such a pump has the advantage that this pump can be produced inexpensively due to the relatively simple design. Oil lubrication improves pneumatic sealing or pneumatic efficiency and reduces wear.
Die Vakuumpumpe ist in einem alternativen Ausführungsbeispiel als eine trockenlaufende Pumpe ausgeführt. Unter trockenlaufend im Sinne der Erfindung wird verstanden, dass der Rotor nicht mit Öl geschmiert ist. Dies hat den Vorteil, dass für den Betrieb keine zusätzliche Ölversorgung bereitgestellt werden muss, und dass von dem verdichteten Fluid kein Öl abgetrennt werden muss.In an alternative exemplary embodiment, the vacuum pump is designed as a dry-running pump. Dry-running in the sense of the invention means that the rotor is not lubricated with oil. This has the advantage that no additional oil supply has to be provided for operation and that no oil has to be separated from the compressed fluid.
Die Pumpe weist nach einem bevorzugten Ausführungsbeispiel der Erfindung mindestens einen Schieber auf, der zwei Flügel ausbildet. Alternativ weist die Pumpe nach einem bevorzugten Ausführungsbeispiel der Erfindung fünf Flügel auf, die durch fünf Schieber gebildet sind.According to a preferred embodiment of the invention, the pump has at least one slider which forms two blades. Alternatively, according to a preferred embodiment of the invention, the pump has five blades which are formed by five slides.
Vorzugsweise ist der Schieber der Pumpe aus Kunststoff hergestellt. Kunststoff hat den Vorteil, dass es einfach und preiswert herstellbar ist. In einer alternativen Ausführungsform ist der Schieber aus einem graphitbasierten Werkstoff hergestellt.The slide of the pump is preferably made of plastic. Plastic has the advantage that it is easy and inexpensive to produce. In an alternative embodiment, the slider is made from a graphite-based material.
Weitere Einzelheiten und Vorteile der vorliegenden Erfindung ergeben sich aus der nachfolgenden Beschreibung des Ausführungsbeispiels in Verbindung mit den Zeichnungen. In diesen zeigen:
- Figur 1:
- Schematische Darstellung einer elektrischen Kfz-Vakuumpumpe nach der vorliegenden Erfindung, und
- Figur 2:
- einen Schnitt durch das Pumpengehäuse der elektrischen Kfz-Vakuumpumpe nach
Fig. 1 .
- Figure 1:
- Schematic representation of an electric automotive vacuum pump according to the present invention, and
- Figure 2:
- a section through the pump housing of the electric vehicle vacuum pump
Fig. 1 .
In
Die elektrischen Kfz-Vakuumpumpe 10 weist ein Pumpengehäuse 12 und einen bürstenlosen, elektronisch kommutierten, sensorlosen Antriebsmotor 13 auf, Dieser Antriebsmotor 13 treibt über eine Welle 14 einen in einem durch das Pumpengehäuse 12 ausgebildeten Pumpraum 16 vorgesehenen Pumpenrotor 18 an. In dem Pumpengehäuse 12 sind zwei Fluideinlassleitungen 201, 202 und zwei Fluidauslassleitungen 221, 222 ausgebildet. Die beiden Fluidauslassleitungen 221, 222 sind in Auslassrichtung in dem Pumpengehäuse 12 zu einer gemeinsamen Gesamtfluidauslassleitung 24 zusammengeführt. Die beiden Fluideinlassleitungen 201, 202 werden in Einlassrichtung in dem Pumpengehäuse 12 aus einer Gesamtfluideinlassleitung 26 verzweigt.The electric
In den beiden Fluidauslassleitungen 221, 222 sind in Auslassrichtung vor der Zusammenführung der Leitungen Auslass-Rückschlagventile 281, 282 vorgesehen, welche in einer Einlassrichtung sperren und in einer Auslassrichtung eine Fluidströmung freigeben. Ebenso ist im Vorlauf jeder der beiden Fluideinlassleitungen 201, 202 in Einlassrichtung nach der Verzweigung der Gesamtfluideinlassleitung 26 jeweils ein Einlass-Rückschlagventil 301, 302 vorgesehen, welche in einer Auslassrichtung sperren und in einer Einlassrichtung eine Fluidströmung freigeben.In the two fluid outlet lines 22 1 , 22 2 there are outlet check valves 28 1 , 28 2 in the outlet direction before the lines are brought together provided, which block in an inlet direction and release a fluid flow in an outlet direction. Likewise, in the flow of each of the two fluid inlet lines 20 1 , 20 2 in the inlet direction after the branching of the overall
Der Rotorkörper 32 ist derart exzentrisch in dem Pumpraum 16 angeordnet, dass eine Rotoraußenfläche 40 des Pumpenrotors 18 fluidisch abdichtend an der Pumpraum-Wand 38 anliegt, und damit einen Trennabschnitt 42 ausbildet.The
In einer Stirnwand 44 des Pumpengehäuses 12 ist unmittelbar vor und nach dem Trennabschnitt 42 jeweils eine einzige nierenförmige Öffnung 46, 47 vorgesehen, welche in Abhängigkeit von der Laufrichtung des Pumpenrotors 18 entweder als Einlass- oder als Auslassöffnung 46, 47 dient. Jede Öffnung 46, 47 ist über jeweils eine der Fluideinlassleitungen 201, 202 mit einem Pumpeneinlass 48 fluidisch verbunden. Jede Öffnung 46, 47 ist zudem über jeweils eine der Fluidauslassleitungen 221, 222 mit einem Pumpenauslass 49 fluidisch verbunden. Bei einer Rotation des Pumpenrotors 18 dient die Öffnung 46, 47, welche in Rotationsrichtung unmittelbar vor dem Trennabschnitt 42 liegt, als Auslassöffnung und die Öffnung 46, 47, die in Rotationsrichtung unmittelbar nach dem Trennabschnitt liegt, als Eintrittsöffnung. Durch Vorsehen der Rückschlagventile 28, 30 werden Rückströme unterbunden.In an
- 1010
- elektrischen Kfz-Vakuumpumpeelectric vehicle vacuum pump
- 1212
- PumpengehäusePump housing
- 1313
- Antriebsmotordrive motor
- 1414
- WelleWave
- 1616
- PumpraumPump room
- 1818
- Pumpenrotorpump rotor
- 201, 202201, 202
- FluideinlassleitungenFluid inlet lines
- 221, 222221, 222
- FluidauslassleitungenFluid outlet lines
- 2424
- GesamtfluidauslassleitungTotal fluid outlet line
- 2626
- GesamtfluideinlassleitungTotal fluid inlet line
- 281, 282281, 282
- Auslass-RückschlagventileOutlet check valves
- 301, 302301, 302
- Einlass-RückschlagventileInlet check valves
- 3232
- RotorkörperRotor body
- 3333
- DrehachseAxis of rotation
- 3434
- SchieberSlider
- 3636
- Endenend up
- 3838
- Pumpraum-WandPump room wall
- 4040
- RotoraußenflächeRotor outer surface
- 4242
- TrennabschnittSeparating section
- 4444
- StirnwandFront wall
- 4646
- Öffnungopening
- 4747
- Öffnungopening
- 4848
- PumpeneinlassPump inlet
- 4949
- PumpenauslassPump outlet
Claims (3)
- Electric automotive vacuum pump (10) comprising:
a brushless, electronically commutated, sensorless drive motor (13.), further comprising:a pump housing (12) configuring a pump chamber (16),a pump rotor (18) which rotates in the pump chamber (16) in a compressing manner, wherein the pump rotor (18) is rotatable in a forward and a reverse direction of rotation,a single forward outlet opening (47) and a single separate reverse outlet opening (46), which connect the pump chamber (16.) to a pump outlet (49), wherein a non-return valve (281, 282) opening in the outlet direction is provided respectively between the outlet opening (46, 47) and the pump outlet (49), anda forward inlet opening (46) and a separate reverse inlet opening (47), which connect the pump chamber (16.) to a pump inlet (48), wherein a non-return valve (301, 302) opening in the inlet direction is provided respectively between the inlet opening (46, 47) and the pump inlet (48), andthe forward outlet opening and the reverse inlet opening are defined by a single opening (47), the forward inlet opening and the reverse outlet opening are defined by a single opening (46),the pump is a rotary vane pump or a vane pump,the outlet opening (46, 47) is provided in the direction of rotation directly upstream of a separating section (42), in which the pump rotor (18) abuts against a pump chamber wall (38) in a fluidically sealing manner, and the inlet opening (46, 47) is provided in the direction of rotation directly downstream of a separating section (42), in which the pump rotor (18) abuts against a pump chamber wall (38) in a fluidically sealing manner. - Electric automotive vacuum pump (10) according to claim 1, characterised in that the vacuum pump (10) is an oil-lubricated pump.
- Electric automotive vacuum pump (10) according to claim 1, characterised in that the vacuum pump (10) is a dry-running pump.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2015/076406 WO2017080599A1 (en) | 2015-11-12 | 2015-11-12 | Electric motor vehicle vacuum pump |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3374640A1 EP3374640A1 (en) | 2018-09-19 |
EP3374640B1 true EP3374640B1 (en) | 2024-03-06 |
Family
ID=54545126
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15794896.9A Active EP3374640B1 (en) | 2015-11-12 | 2015-11-12 | Electric automotive vacuum pump |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3374640B1 (en) |
WO (1) | WO2017080599A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB564668A (en) * | 1943-05-13 | 1944-10-09 | William Wilson Hamill | Improvements in gear wheel pumps for liquids |
US4598559A (en) * | 1985-05-31 | 1986-07-08 | Carrier Corporation | Reversible fixed vane rotary compressor having a reversing disk which carries the suction port |
AT399922B (en) * | 1989-06-05 | 1995-08-25 | Weber Gisela | Gear pump for clockwise and anticlockwise operation |
US20050260082A1 (en) * | 2004-05-18 | 2005-11-24 | Armin Conrad | Oil-sealed vane rotary vacuum pump |
DE102007022216A1 (en) * | 2007-05-11 | 2008-11-13 | Robert Bosch Gmbh | Hydraulic system with gear pump |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7491037B2 (en) * | 2005-08-05 | 2009-02-17 | Edwards Thomas C | Reversible valving system for use in pumps and compressing devices |
-
2015
- 2015-11-12 WO PCT/EP2015/076406 patent/WO2017080599A1/en active Application Filing
- 2015-11-12 EP EP15794896.9A patent/EP3374640B1/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB564668A (en) * | 1943-05-13 | 1944-10-09 | William Wilson Hamill | Improvements in gear wheel pumps for liquids |
US4598559A (en) * | 1985-05-31 | 1986-07-08 | Carrier Corporation | Reversible fixed vane rotary compressor having a reversing disk which carries the suction port |
AT399922B (en) * | 1989-06-05 | 1995-08-25 | Weber Gisela | Gear pump for clockwise and anticlockwise operation |
US20050260082A1 (en) * | 2004-05-18 | 2005-11-24 | Armin Conrad | Oil-sealed vane rotary vacuum pump |
DE102007022216A1 (en) * | 2007-05-11 | 2008-11-13 | Robert Bosch Gmbh | Hydraulic system with gear pump |
Also Published As
Publication number | Publication date |
---|---|
EP3374640A1 (en) | 2018-09-19 |
WO2017080599A1 (en) | 2017-05-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2773850B1 (en) | Pump device for delivering a medium | |
EP3374642B1 (en) | Electric axial-flow liquid pump for motor vehicle | |
DE102014202366B4 (en) | Hydrodynamic machine, in particular hydrodynamic retarder | |
DE202014010988U1 (en) | spiral compressor | |
WO2007128489A1 (en) | Hydrodynamic machine | |
WO2016173798A1 (en) | Pump device | |
DE102017104063B4 (en) | Electric gerotor pump with control mirror | |
WO2016173800A1 (en) | Pump device | |
DE202015103751U1 (en) | pump device | |
DE102012217450A1 (en) | WAVE SEALING DEVICE AND PUMP UNIT WITH THE DEVICE | |
DE102014208775A1 (en) | Gas vane pump and method of operation of the gas vane pump | |
EP2729667A1 (en) | Vacuum pump for use in the automotive sector | |
WO2017008959A1 (en) | Rotary piston pump comprising radial bearings on only one housing part | |
EP3374640B1 (en) | Electric automotive vacuum pump | |
DE102014222396A1 (en) | displacement | |
DE102012221358B3 (en) | pumping device | |
DE102016212425A1 (en) | rotary pump | |
DE102012223920A1 (en) | Rotary piston pump e.g. high-pressure pump for conveying fluid e.g. fuel to internal combustion engine, has an actuator for variable control and/or regulation of bypass channel, to integrate routable volume flow of fluid into channel | |
DE102017122611B3 (en) | Swivel piston pump for fluids | |
DE102014205711B4 (en) | Vacuum pump and method for operating the vacuum pump | |
DE102015108925B3 (en) | Electrically driven liquid filter pump and electrically driven liquid positive displacement pump for use in the liquid filter pump | |
DE102008014243A1 (en) | Automotive rotary pump for engine cooling oil has partition rotors whose pressure varies with direction of rotation | |
EP3012457A1 (en) | Electric motor vehicle coolant pump | |
DE102015104549A1 (en) | Sealing line optimized eccentric screw pump | |
DE102015108923B3 (en) | Electrically driven liquid displacement pump |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20180524 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
17Q | First examination report despatched |
Effective date: 20190621 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
INTG | Intention to grant announced |
Effective date: 20231004 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502015016777 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG9D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20240306 |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20240306 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20240607 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20240306 Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20240606 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20240306 |