EP2434161A2 - Seal for a controllable coolant pump - Google Patents
Seal for a controllable coolant pump Download PDFInfo
- Publication number
- EP2434161A2 EP2434161A2 EP11173084A EP11173084A EP2434161A2 EP 2434161 A2 EP2434161 A2 EP 2434161A2 EP 11173084 A EP11173084 A EP 11173084A EP 11173084 A EP11173084 A EP 11173084A EP 2434161 A2 EP2434161 A2 EP 2434161A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- coolant pump
- impeller
- sealing
- guide plate
- sealing element
- 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.)
- Withdrawn
Links
- 239000002826 coolant Substances 0.000 title claims abstract description 45
- 238000007789 sealing Methods 0.000 claims description 52
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 2
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 229920002530 polyetherether ketone Polymers 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 238000002485 combustion reaction Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001960 triggered effect Effects 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
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0027—Varying behaviour or the very pump
- F04D15/0038—Varying behaviour or the very pump by varying the effective cross-sectional area of flow through the rotor
-
- 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
- F04D29/08—Sealings
- F04D29/086—Sealings especially adapted for liquid pumps
Definitions
- the invention relates to a controllable coolant pump, which is preferably intended for the cooling circuit of an internal combustion engine.
- the construction of the coolant pump comprises a pump housing in which a roller bearing, preferably designed as a hollow shaft pump shaft, a drive wheel with an impeller connects.
- a roller bearing preferably designed as a hollow shaft pump shaft
- a drive wheel with an impeller connects.
- the rotating impeller coolant in particular cooling water
- the impeller on the suction chamber side associated with an actuator axially displaceable baffle.
- Such coolant pumps are preferably used to shorten the cold running phase in internal combustion engines. After a start of a cooled internal combustion engine, it is advantageous if initially a forced circulation of the coolant is prevented in order to be able to reach the operating temperature more quickly. This measure reduces friction losses and at the same time improves the emission values of the internal combustion engine in this operating phase.
- To influence the delivery volume of coolant pumps it is known to vary the input speed of the impellers or to use a control or regulating valve in the coolant circuit in front of or behind the coolant pump.
- the object of the invention is to provide a seal for a controllable coolant pump, which ensures that when the pump is closed, no volume flow is promoted.
- annular gap between the periphery of the impeller and the baffle and between the vanes of the impeller and corresponding recesses in the baffle forms.
- the inventive arrangement of a highly elastic sealing element in the largest diameter range of the annular gap between impeller and baffle creates a seal on the two components are effectively sealed against each other.
- This seal is designed so that in all operating conditions of the coolant pump, regardless of the thereby adjusting pressure differences between the impeller front and vane rear, an effective seal is ensured.
- the sealing element according to the invention also prevents flow of the coolant through the functional gap between the vanes of the impeller and the wing recesses in the baffle.
- a circumferential, radially aligned annular groove is introduced in an outer contour of the impeller.
- This annular groove is intended for receiving the sealing element, which is sealingly supported on an axially aligned, the outer contour of the impeller overlapping cylindrical portion of the baffle.
- the cylindrical portion extends from the baffle over a length that exceeds a maximum travel of the baffle.
- a seal comprising two oppositely spread sealing lips, which are connected via a sealing back.
- the seal In the installed state, the seal is fixed over the sealing back in the slightest groove of the impeller, wherein sealing lips are biased sealingly supported on an inner side of the cylindrical portion of the guide plate.
- a spreading element is provided according to the invention, which is inserted between the sealing lips.
- the sealing lips are always aligned independently of the adjusting movement of the stator in an optimal position.
- a diagonally slotted sealing element can be used according to the invention for sealing the annular gap.
- P refers the ends of the sealing element are connected in the region of the separation point by a ring lock.
- sealing lips enclosing sealing element can be used such as an O-ring or a quadring.
- other sealing elements can be used such as an O-ring or a quadring.
- a reinforced sealing element are used, in which, for example, the reinforcement is introduced to stiffen the sealing element in a sealing back.
- a further embodiment of the invention provides that the cover plate encloses a receptacle for a seal in a largest circumferential area. This can be effectively sealed in an end position of the baffle, with closed coolant pump, a gap between the cover plate and the baffle. 6
- the sealing element is preferably designed as a multi-component injection molded part.
- a material for the sealing element is particularly suitable a highly elastic, wear-resistant plastic such as PEEK.
- FIG. 1 shows a section of a controllable coolant pump 1, comprising a pump housing 2, in which a hollow shaft 3 is mounted and which is rotationally rigidly connected to an impeller 4 and each other in FIG. 1 not shown drive wheel includes.
- the coolant pump 1 In the operating state of the coolant pump 1 with a rotating impeller 4, the coolant flows axially via a suction chamber 5 to the impeller 4 and is directed radially through the wings 6 in an annular channel 7.
- the impeller 4 is associated with an axially displaceable guide plate 9, which is fixed to a guided in the hollow shaft 3 push rod 10.
- the push rod 10 At the end facing away from the impeller 4, the push rod 10 with an in Fig.
- the guide plate 9 is adjusted via the adjustment unit to the support on the cover plate 8. In this end position, the guide plate 9 is sealingly supported on a seal 11, which is inserted in an outside receptacle 12 of the cover plate 8. In this case, arranged in a largest peripheral region of the cover plate 8, designed as an elastic seal seal 11 is supported directly on the front side of the guide plate 9.
- the coolant pump 1 comprises an elastic sealing element 13, which is used in an annular groove 14 of the impeller 4, a self-adjusting annular gap 15 seals to the stator 9.
- the stator 9 forms an axially aligned, cylindrical portion 16 which engages over an outer contour 17 of the guide plate 9, wherein a length S 1 of the cylindrical portion 16 exceeds a maximum adjusting movement S 2 of the stator 9. Due to the installation position of the sealing element 13 is simultaneously prevented a flow of coolant between a front side and a rear side of the impeller 4, which can be triggered in particular by a coolant inlet opening gap 18 between the wing 6 and openings 19 of the stator 9.
- FIG. 2 illustrated by an enlarged view of the structure and the mounting position of the sealing element 13, which comprises two separate, spread sealing lips 20,21, which are connected via a sealing back 22.
- the form-fitting and non-positively inserted into the annular groove 15 via the sealing back 22 allows the oppositely spread sealing lips 20,21 effective sealing of the annular gap 15 in both directions of the guide plate 9.
- the dot-dash line between the impeller 4 and the baffle 9 illustrates a flow of the coolant that enters via the forming opening gap 18 between the opening 19 and the wing 6 in the annular gap 15, wherein the sealing element 13 effectively prevents this flow of coolant.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
Description
Die Erfindung betrifft eine regelbare Kühlmittelpumpe, die bevorzugt für den Kühlkreislauf einer Brennkraftmaschine bestimmt ist. Der Aufbau der Kühlmittelpumpe umfasst ein Pumpengehäuse, in dem eine wälzgelagerte, bevorzugt als Hohlwelle ausgebildete Pumpenwelle, ein Antriebsrad mit einem Flügelrad verbindet. Im Betriebszustand der Kühlmittelpumpe wird durch das rotierende Flügelrad Kühlmittel, insbesondere Kühlwasser, über einen Saugraum angesaugt und über die Flügel oder Schaufeln des Flügelrades in einen Ringkanal des Pumpengehäuses gefördert. Zur unmittelbaren Einflussnahme auf das Fördervolumen der Kühlmittelpumpe ist dem Flügelrad saugraumseitig ein über einen Aktor axial verschiebbares Leitblech zugeordnet.The invention relates to a controllable coolant pump, which is preferably intended for the cooling circuit of an internal combustion engine. The construction of the coolant pump comprises a pump housing in which a roller bearing, preferably designed as a hollow shaft pump shaft, a drive wheel with an impeller connects. In the operating state of the coolant pump is sucked by the rotating impeller coolant, in particular cooling water, via a suction chamber and conveyed via the vanes or blades of the impeller into an annular channel of the pump housing. For direct influence on the delivery volume of the coolant pump, the impeller on the suction chamber side associated with an actuator axially displaceable baffle.
Derartige Kühlmittelpumpen werden bevorzugt eingesetzt, um in Brennkraftmaschinen die Kaltlaufphase zu verkürzen. Nach einem Start einer abgekühlten Brennkraftmaschine ist es von Vorteil, wenn zunächst eine zwangsweise Zirkulation des Kühlmittels unterbunden ist, um schneller die Betriebstemperatur erreichen zu können. Diese Maßnahme reduziert Reibungsverluste und verbessert gleichzeitig die Emissionswerte der Brennkraftmaschine in dieser Betriebsphase. Zur Einflussnahme auf das Fördervolumen von Kühlmittelpumpen ist es bekannt, die Antriebsdrehzahl der Flügelräder zu variieren oder im Kühlmittelkreislauf vor oder hinter der Kühlmittelpumpe ein Steuer- oder Regelventil einzusetzen.Such coolant pumps are preferably used to shorten the cold running phase in internal combustion engines. After a start of a cooled internal combustion engine, it is advantageous if initially a forced circulation of the coolant is prevented in order to be able to reach the operating temperature more quickly. This measure reduces friction losses and at the same time improves the emission values of the internal combustion engine in this operating phase. To influence the delivery volume of coolant pumps, it is known to vary the input speed of the impellers or to use a control or regulating valve in the coolant circuit in front of or behind the coolant pump.
Aus der
Die Aufgabe der Erfindung besteht darin, eine Abdichtung für eine regelbare Kühlmittelpumpe zu schaffen, die sicherstellt, dass bei geschlossener Pumpe kein Volumenstrom gefördert wird.The object of the invention is to provide a seal for a controllable coolant pump, which ensures that when the pump is closed, no volume flow is promoted.
Diese Problemstellung wird erfindungsgemäß durch ein konstruktives Konzept gelöst, bei dem ein funktionsbedingter Ringspalt zwischen dem Flügelrad und dem Leitblech durch ein elastisches Dichtelement abgedichtet ist.This problem is inventively achieved by a constructive concept in which a functional annular gap between the impeller and the baffle is sealed by an elastic sealing element.
Bedingt durch die axiale Verschiebung des Leitblechs gegenüber dem Flügelrad zur variablen Einstellung des Volumenstroms der Kühlmittelpumpe bildet sich ein Ringspalt zwischen dem Umfang des Flügelrades und des Leitblechs sowie zwischen den Flügeln des Flügelrades und entsprechenden Aussparungen im Leitblech. Durch die erfindungsgemäße Anordnung eines hochelastischen Dichtelementes im größten Durchmesserbereich des Ringspaltes zwischen Flügelrad und Leitblech stellt sich eine Abdichtung ein, über die beide Bauteile wirksam gegeneinander abgedichtet sind. Diese Abdichtung ist so ausgeführt, dass in allen Betriebszuständen der Kühlmittelpumpe, unabhängig von den sich dabei einstellenden Druckdifferenzen zwischen der Flügelrad-Vorderseite und Flügelrad-Rückseite, eine wirksame Abdichtung sichergestellt ist. Dabei unterbindet das erfindungsgemäße Dichtelement ebenfalls eine Strömung des Kühlmittels durch die funktionsbedingten Spalte zwischen den Flügeln des Flügelrades und den Flügelaussparungen im Leitblech.Due to the axial displacement of the guide plate relative to the impeller for variable adjustment of the volume flow of the coolant pump, an annular gap between the periphery of the impeller and the baffle and between the vanes of the impeller and corresponding recesses in the baffle forms. The inventive arrangement of a highly elastic sealing element in the largest diameter range of the annular gap between impeller and baffle creates a seal on the two components are effectively sealed against each other. This seal is designed so that in all operating conditions of the coolant pump, regardless of the thereby adjusting pressure differences between the impeller front and vane rear, an effective seal is ensured. In this case, the sealing element according to the invention also prevents flow of the coolant through the functional gap between the vanes of the impeller and the wing recesses in the baffle.
Vorteilhaft kann durch das erfindungsgemäße Konzept bei geschlossener Pumpe nicht nur eine Reduzierung des Volumenstroms, sondern eine gewünschte Null-Förderung der Kühlmittelpumpe im geschlossenen Zustand des Leitblechs realisiert werden. Eine nachteilige Zirkulation des noch nicht betriebswarmen Kühlmittels innerhalb der Brennkraftmaschine wird damit unterbunden. Die damit verkürzte Kaltlaufphase und schnellere Erreichung der Betriebstemperatur verringert den Zeitraum zur Beheizung des Fahrgastraums, reduziert die Reibung und bewirkt folglich eine Energieeinsparung.Advantageously, not only a reduction of the volume flow, but a desired zero delivery of the coolant pump in the closed state of the baffle by the inventive concept with the pump closed will be realized. An adverse circulation of the not yet warm refrigerant within the internal combustion engine is thus prevented. The shortened cold-running phase and faster achievement of the operating temperature reduces the period for heating the passenger compartment, reduces friction and thus results in energy savings.
Weitere vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der abhängigen Ansprüche 2 bis 9.Further advantageous embodiments of the invention are the subject of the
Gemäß einer bevorzugten Ausgestaltung der Erfindung ist vorgesehen, dass in einer Außenkontur des Flügelrades eine umlaufende, radial ausgerichtete Ringnut eingebracht ist. Diese Ringnut ist zur Aufnahme des Dichtelementes bestimmt, das dichtend an einem axial ausgerichteten, die äußere Kontur des Flügelrades überdeckenden zylindrischen Abschnitt des Leitblechs abgestützt ist. Zur Sicherstellung einer wirksamen Abdichtung in allen Positionen des Leitblechs erstreckt sich der zylindrische Abschnitt von dem Leitblech über eine Länge, die einen maximalen Stellweg des Leitblechs übertrifft.According to a preferred embodiment of the invention it is provided that in an outer contour of the impeller, a circumferential, radially aligned annular groove is introduced. This annular groove is intended for receiving the sealing element, which is sealingly supported on an axially aligned, the outer contour of the impeller overlapping cylindrical portion of the baffle. To ensure effective sealing in all positions of the baffle, the cylindrical portion extends from the baffle over a length that exceeds a maximum travel of the baffle.
Für das erfindungsgemäße Dichtelement eignet sich insbesondere eine Abdichtung, die zwei entgegengesetzt gespreizte Dichtlippen umfasst, die über einen Dichtungsrücken verbunden sind. Im Einbauzustand ist die Abdichtung über den Dichtungsrücken im geringsten Nut des Flügelrades fixiert, wobei Dichtlippen vorgespannt dichtend an einer Innenseite von dem zylindrischen Abschnitt des Leitblechs abgestützt sind. Als Maßnahme um die Dichtqualität dieser Abdichtung zu optimieren ist erfindungsgemäß ein Spreizelement vorgesehen, das zwischen den Dichtlippen eingesetzt ist. Über das Spreizelement sind die Dichtlippen unabhängig von der Stellbewegung des Leitrades stets in einer optimalen Position ausgerichtet.For the sealing element according to the invention is particularly suitable a seal comprising two oppositely spread sealing lips, which are connected via a sealing back. In the installed state, the seal is fixed over the sealing back in the slightest groove of the impeller, wherein sealing lips are biased sealingly supported on an inner side of the cylindrical portion of the guide plate. As a measure to optimize the sealing quality of this seal, a spreading element is provided according to the invention, which is inserted between the sealing lips. About the expansion element, the sealing lips are always aligned independently of the adjusting movement of the stator in an optimal position.
Als Maßnahme zur einfachen Montage und Vermeidung einer unzulässigen Dehnung des Dichtelementes kann gemäß der Erfindung zur Abdichtung des Ringspaltes ein diagonal geschlitztes Dichtelement eingesetzt werden. Bevorzugt sind die Enden des Dichtelementes im Bereich der Trennstelle durch ein Ringschloss verbunden.As a measure for easy installation and avoidance of unacceptable stretching of the sealing element, a diagonally slotted sealing element can be used according to the invention for sealing the annular gap. Prefers the ends of the sealing element are connected in the region of the separation point by a ring lock.
Alternativ zu einem Dichtlippen einschließenden Dichtelement sind erfindungsgemäß auch andere Dichtelemente einsetzbar wie beispielsweise ein O-Ring oder ein Quadring. Gemäß der Erfindung kann weiterhin abweichend zu einem einteiligen Aufbau ein armiertes Dichtelement eingesetzt werden, bei dem bspw. die Armierung zur Versteifung des Dichtungselementes in einem Dichtungsrücken eingebracht ist.Alternatively to a sealing lips enclosing sealing element according to the invention, other sealing elements can be used such as an O-ring or a quadring. According to the invention can continue to deviate from a one-piece construction, a reinforced sealing element are used, in which, for example, the reinforcement is introduced to stiffen the sealing element in a sealing back.
Eine weitere Ausgestaltung der Erfindung sieht vor, dass die Deckscheibe in einem größten Umfangsbereich eine Aufnahme für eine Abdichtung einschließt. Damit kann in einer Endlage des Leitblechs, bei geschlossener Kühlmittelpumpe, ein Spaltmaß zwischen der Deckscheibe und dem Leitblechs wirksam abgedichtet werden.
6A further embodiment of the invention provides that the cover plate encloses a receptacle for a seal in a largest circumferential area. This can be effectively sealed in an end position of the baffle, with closed coolant pump, a gap between the cover plate and the baffle.
6
Das Dichtelement ist bevorzugt als ein Mehrkomponenten-Spritzgussteil ausgeführt. Als Werkstoff für das Dichtelement eignet sich insbesondere ein hochelastischer, verschleißfester Kunststoff wie PEEK.The sealing element is preferably designed as a multi-component injection molded part. As a material for the sealing element is particularly suitable a highly elastic, wear-resistant plastic such as PEEK.
Vorteilhafte weitere Merkmale der Erfindung ergeben sich aus der nachfolgenden Beschreibung, in der ein Ausführungsbeispiel der Erfindung dargestellt ist.Advantageous further features of the invention will become apparent from the following description in which an embodiment of the invention is shown.
Es zeigen:
- Fig. 1
- einen Ausschnitt einer Kühlmittelpumpe mit dem erfindungsgemäßen Dichtelement;
- Fig. 2
- das Detail Z gemäß
Fig. 1 in einer vergrößerten Darstellung.
- Fig. 1
- a detail of a coolant pump with the sealing element according to the invention;
- Fig. 2
- the detail Z according to
Fig. 1 in an enlarged view.
Die
Zur Erreichung einer angestrebten Nullförderung der Kühlmittelpumpe 1 wird das Leitblech 9 über die Verstelleinheit bis zur Abstützung an der Deckscheibe 8 verstellt. In dieser Endlage ist das Leitblech 9 an einer Abdichtung 11 dichtend abgestützt, die in einer außenseitigen Aufnahme 12 der Deckscheibe 8 eingesetzt ist. Dabei ist die in einem größten Umfangsbereich der Deckscheibe 8 angeordnete, als elastische Dichtung ausgeführte Abdichtung 11 unmittelbar stirnseitig an dem Leitblech 9 abgestützt. Zusätzlich umfasst die Kühlmittelpumpe 1 ein elastisches Dichtelement 13, das in einer Ringnut 14 des Flügelrades 4 eingesetzt, einen sich einstellenden Ringspalt 15 zu dem Leitrad 9 abdichtet. Dazu bildet das Leitrad 9 einen axial ausgerichteten, zylindrischen Abschnitt 16, der eine Außenkontur 17 des Leitblechs 9 übergreift, wobei eine Länge S1 des zylindrischen Abschnitts 16 eine maximale Stellbewegung S2 des Leitrades 9 übertrifft. Durch die Einbaulage des Dichtelementes 13 wird gleichzeitig eine Kühlmittelströmung zwischen einer Vorderseite und einer Rückseite des Flügelrades 4 unterbunden, die insbesondere durch einen Kühlmitteleintritt über öffnungsspalte 18 zwischen dem Flügel 6 und Öffnungen 19 des Leitrades 9 ausgelöst werden kann.In order to achieve a desired zero promotion of the coolant pump 1, the
Die
- 11
- KühlmittelpumpeCoolant pump
- 22
- Pumpengehäusepump housing
- 33
- Hohlwellehollow shaft
- 44
- Flügelradimpeller
- 55
- Saugraumsuction
- 66
- Flügelwing
- 77
- Ringkanalannular channel
- 88th
- Deckscheibecover disc
- 99
- Leitblechbaffle
- 1010
- Schubstangepushrod
- 1111
- Abdichtungseal
- 1212
- Aufnahmeadmission
- 1313
- Dichtelementsealing element
- 1414
- Ringnutring groove
- 1515
- Ringspaltannular gap
- 1616
- Abschnittsection
- 1717
- Außenkonturouter contour
- 1818
- Öffnungsspaltopening gap
- 1919
- Öffnungopening
- 2020
- Dichtlippesealing lip
- 2121
- Dichtlippesealing lip
- 2222
- Dichtungsrückenseal back
Claims (9)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010046450A DE102010046450A1 (en) | 2010-09-24 | 2010-09-24 | Sealing for a controllable coolant pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2434161A2 true EP2434161A2 (en) | 2012-03-28 |
| EP2434161A3 EP2434161A3 (en) | 2012-12-26 |
Family
ID=44588263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP11173084A Withdrawn EP2434161A3 (en) | 2010-09-24 | 2011-07-07 | Seal for a controllable coolant pump |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20120076640A1 (en) |
| EP (1) | EP2434161A3 (en) |
| CN (1) | CN102418711A (en) |
| DE (1) | DE102010046450A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032338B (en) * | 2012-10-30 | 2015-05-27 | 西安交通大学 | Refrigerant pump |
| DE102013015947B3 (en) * | 2013-09-25 | 2014-05-22 | Geräte- und Pumpenbau GmbH | Controllable coolant pump for use in cooling circuit of combustion engine, has spring element generating radial bias force and binding torsional vibrations, and wings rigidly arranged on impeller that is arranged at pump shaft |
| DE102014201880B3 (en) * | 2014-02-03 | 2014-12-18 | Schaeffler Technologies Gmbh & Co. Kg | Dirt trap as a functional module in the impeller of a coolant pump |
| CN106536939B (en) * | 2014-07-21 | 2019-09-06 | 尼得科Gpm有限公司 | Coolant pump with integrated closed-loop control |
| DE102015106639A1 (en) * | 2015-04-29 | 2016-11-03 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | pump |
| DE102017120191B3 (en) | 2017-09-01 | 2018-12-06 | Nidec Gpm Gmbh | Controllable coolant pump for main and secondary conveying circuit |
| US11092982B2 (en) * | 2018-07-23 | 2021-08-17 | Schaeffler Technologies AG & Co. KG | Temperature sensor for coolant control valve |
| DE102019123646B4 (en) * | 2019-09-04 | 2023-08-03 | Schaeffler Technologies AG & Co. KG | Coolant regulator with a shaft seal |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1813747A (en) | 1928-12-20 | 1931-07-07 | Ingersoll Rand Co | Centrifugal pump |
| DE19901123A1 (en) | 1999-01-14 | 2000-07-20 | Bosch Gmbh Robert | Controllable radial pump, especially for supplying coolant for car has adjuster connected with sleeve which can be slid over pump blades in axial direction |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4070132A (en) * | 1976-11-02 | 1978-01-24 | Baltimore Aircoil Company, Inc. | Variable performance pump |
| US5169286A (en) * | 1989-03-09 | 1992-12-08 | Yutaka Yamada | Variable capacity centrifugal water pump with movable pressure chamber formed by impeller |
| DE4200507C2 (en) * | 1992-01-11 | 1994-02-17 | Armin Henry Kultscher | Variable fluid machine |
| US5211530A (en) * | 1992-04-20 | 1993-05-18 | The United States Of America As Represented By The Secretary Of The Navy | Variable breadth impeller that provides a specific shutoff head |
| US5941534A (en) * | 1994-10-12 | 1999-08-24 | Honda Giken Kogyo Kabushiki Kaisha | Hydraulic seal system |
| DE10251042A1 (en) * | 2002-11-02 | 2004-05-19 | Daimlerchrysler Ag | Motor vehicle drive equipment for use with automatic gears has oil pump for gear system driven solely by electric motor |
| DE102007019263B3 (en) * | 2007-04-24 | 2008-06-19 | Geräte- und Pumpenbau GmbH Dr. Eugen Schmidt | Coolant pump for large combustion engines, e.g. for trucks, has distributed piston chambers between ring channel, slider chamber for drive pistons with guide journals end-on to chamber, protruding into and joined to pressure ring |
-
2010
- 2010-09-24 DE DE102010046450A patent/DE102010046450A1/en not_active Withdrawn
-
2011
- 2011-07-07 EP EP11173084A patent/EP2434161A3/en not_active Withdrawn
- 2011-09-07 US US13/226,913 patent/US20120076640A1/en not_active Abandoned
- 2011-09-23 CN CN2011102850365A patent/CN102418711A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1813747A (en) | 1928-12-20 | 1931-07-07 | Ingersoll Rand Co | Centrifugal pump |
| DE19901123A1 (en) | 1999-01-14 | 2000-07-20 | Bosch Gmbh Robert | Controllable radial pump, especially for supplying coolant for car has adjuster connected with sleeve which can be slid over pump blades in axial direction |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2434161A3 (en) | 2012-12-26 |
| CN102418711A (en) | 2012-04-18 |
| US20120076640A1 (en) | 2012-03-29 |
| DE102010046450A1 (en) | 2012-03-29 |
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