EP2392828A2 - Joint pour une pompe à réfrigérant réglable - Google Patents

Joint pour une pompe à réfrigérant réglable Download PDF

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Publication number
EP2392828A2
EP2392828A2 EP11163109A EP11163109A EP2392828A2 EP 2392828 A2 EP2392828 A2 EP 2392828A2 EP 11163109 A EP11163109 A EP 11163109A EP 11163109 A EP11163109 A EP 11163109A EP 2392828 A2 EP2392828 A2 EP 2392828A2
Authority
EP
European Patent Office
Prior art keywords
sealing element
coolant pump
impeller
pump according
controllable coolant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP11163109A
Other languages
German (de)
English (en)
Other versions
EP2392828A3 (fr
Inventor
Markus Popp
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
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 Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of EP2392828A2 publication Critical patent/EP2392828A2/fr
Publication of EP2392828A3 publication Critical patent/EP2392828A3/fr
Withdrawn legal-status Critical Current

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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
    • F04D29/16—Sealings between pressure and suction sides
    • F04D29/165—Sealings between pressure and suction sides especially adapted for liquid pumps
    • F04D29/167—Sealings between pressure and suction sides especially adapted for liquid pumps of a centrifugal flow wheel

Definitions

  • the invention relates to a controllable coolant pump for a cooling circuit of an internal combustion engine, which comprises a pump housing in which a roller-mounted hollow shaft is inserted, which connects a drive wheel with an impeller.
  • the impeller associated with a suction chamber includes an axially displaceable guide plate, with which a delivery volume of the coolant pump can be influenced.
  • the guide plate is connected via a guided in the hollow shaft push rod with an adjustment.
  • Radial centrifugal pumps are preferably used as coolant pumps for internal combustion engines. After a start of the internal combustion engine, it is advantageous to avoid a forced circulation of the coolant in order to reach the operating temperature as quickly as possible.
  • 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. By regulating the delivery volume, the warm-up phase of the internal combustion engine can be shortened and at the same time friction losses and emission values can be reduced.
  • a radial pump in which by means of a vane arranged on the axially displaceable slide the delivery volume can be controlled.
  • the control of the slide between an open position and closed position by turning a thread-like guide that moves the slide axially.
  • the DE 10 2004 054 637 A1 discloses a controllable coolant pump in which a valve with associated valve slide within the pump housing by a magnetic coil between two end positions is displaceable.
  • a controllable coolant pump comprises a magnetic coil, which cooperates with an armature disc which is rotationally fixed, but is arranged displaceably on the drive shaft in a spring-loaded manner. Due to friction linings, via which the impeller is connected to the armature disk, there is a drive of the impeller when the magnet is de-energized.
  • the invention has for its object to arrange a baffle for a controllable coolant pump so that the coolant pump promotes no coolant, a zero promotion is feasible.
  • the invention provides that between the cover plate and the baffle a sealing element is provided.
  • the sealing element is arranged so that an effective seal between the components, the cover plate and the baffle adjusts and further forms an annular gap between these components by an elastic deformation of the sealing element.
  • Deviating from previous solutions - adjustment of the volume flow via the gap dimensions between the cover plate and the guide plate in the closed state - this measure can advantageously achieve a specific zero volume flow in all operating ranges of the internal combustion engine.
  • the elastic sealing element advantageously compensates for production-related or thermal expansion occurring tolerances of the mutually supported components.
  • the inventively completely sealed annular gap avoids the circulation of the not yet operational coolant after a start of the internal combustion engine.
  • 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.
  • the elastic sealing element is arranged in the largest diameter range of the cover plate.
  • the sealing element is sealingly supported on the guide plate.
  • the sealing element can be arranged, for example, in an end-side groove or an outer stepped region of the conically widened section of the cover disk.
  • the sealing element encloses the conical portion of the cover plate on the outside. Furthermore, it makes sense to use the sealing element in an aligned to the cover plate outer gradation of the conically expanded portion.
  • the sealing element or the seal is preferably designed as a multi-component injection molded part.
  • a material for the sealing element a highly elastic, wear-resistant plastic is preferably provided.
  • the invention includes a reinforced sealing element, in which the reinforcement, for example, is pressed into a groove of the cover plate and vulcanized onto a sealing material.
  • a coolant pump 1 shown in a longitudinal section, shows the FIG. 1 ,
  • the structure comprises a pump housing 2, in which a hollow shaft 3 is roller-mounted and the impeller 4 with a in FIG. 1 not shown drive wheel connects.
  • the coolant flows axially via a suction chamber 5 to the impeller 4 and is directed radially via the wings 6 in an annular channel 7.
  • a cover plate 8 of the coolant pump 1 forms a transition region to the suction chamber 5.
  • the impeller 4 is associated with an axially displaceable guide plate 9.
  • the guide plate 9 is fixed in position on a guided in the hollow shaft 3 push rod 10, which at the end facing away from the impeller 4 with an in Fig.
  • FIG. 1 not shown adjusting, in particular an electromagnet is in operative connection.
  • the adjusting the baffle 9 is adjustable between the end positions or any intermediate positions.
  • the guide plate 9 supported in an end position directly on the impeller 4.
  • the baffle 9 blocks an inlet 11 and thus a coolant inlet into the annular channel 7.
  • a sealing element 14 provided.
  • the preferably designed as an elastic seal sealing element 14 is disposed in a largest peripheral region of the cover plate 8 and supported directly on the guide plate 9.
  • Another end position which simultaneously allows a maximum delivery volume of the coolant pump 1, adjusts itself when the guide plate 9 abuts the rear wall 12 of the impeller 4.
  • FIGS. 2 and 3 make clear the installation position and effect of the sealing element 14.
  • Die FIG. 2 shows the sealing element 14, which is almost line-touched over an outer portion without elastic deformation on the cover plate 8 is supported.
  • This illustration illustrates a matching aligned position between the course of an inner wall 16 of the conical widened portion 15 of the cover plate 8 and the sealing element 14, which advantageously takes no negative influence on the flow of coolant when the coolant pump 1 is open.
  • the sealing element 14 is inserted in an end-side outside gradation 17 of the portion 15 of the cover plate 8 and thereby fixed positively and / or cohesively.
  • FIG. 3 shows the radially outwardly elastically deformed sealing element 14 in the operating position, to realize a zero promotion of the coolant pump 1.
  • the adaptability to the surrounding construction as well as the possibility of compensation for manufacturing and / or temperature tolerances of the sealing element 14 is clear, at least according to Radial deformation allows a length compensation according to the dimension S.
  • the shows Fig. 3 that due to the elastic deformation of the sealing element 14 at the same time a gap 18 sealed between the housing 2 and the cover plate 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP11163109A 2010-06-07 2011-04-20 Joint pour une pompe à réfrigérant réglable Withdrawn EP2392828A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010022884A DE102010022884A1 (de) 2010-06-07 2010-06-07 Abdichtung für eine regelbare Kühlmittelpumpe

Publications (2)

Publication Number Publication Date
EP2392828A2 true EP2392828A2 (fr) 2011-12-07
EP2392828A3 EP2392828A3 (fr) 2013-01-23

Family

ID=44508675

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11163109A Withdrawn EP2392828A3 (fr) 2010-06-07 2011-04-20 Joint pour une pompe à réfrigérant réglable

Country Status (3)

Country Link
US (1) US20110297111A1 (fr)
EP (1) EP2392828A3 (fr)
DE (1) DE102010022884A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012167953A1 (fr) * 2011-06-07 2012-12-13 Schaeffler Technologies AG & Co. KG Pompe à liquide de refroidissement réglable

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114593076B (zh) * 2021-12-27 2024-04-02 余姚风机总厂有限公司 一种低阻力促燃烧二次风机结构

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1813747A (en) 1928-12-20 1931-07-07 Ingersoll Rand Co Centrifugal pump
DE10057098C1 (de) 2000-11-17 2002-03-28 Geraete & Pumpenbau Gmbh Regelbare Kühlmittelpumpe
DE102004054637A1 (de) 2004-11-12 2006-05-24 Geräte- und Pumpenbau GmbH Dr. Eugen Schmidt Regelbare Kühlmittelpumpe

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1034192B (de) * 1953-10-22 1958-07-17 Sncf Einrichtung zur Regelung wesentlich radial durchstroemter Turbomaschinen mittels axial verschiebbarer Wand der Stroemungswege
US2957424A (en) * 1958-11-19 1960-10-25 Gen Motors Corp Centrifugal pump
CH392760A (de) * 1961-05-13 1965-05-31 Ingenieurbureau W Hausammann & Verfahren zum Steuern der Durchsatzmenge von Laufrad-Strömungsmaschinen, nach diesem Verfahren gesteuerte Strömungsmaschine und Anwendung des Verfahrens
NL126489C (fr) * 1964-05-11
US3362625A (en) * 1966-09-06 1968-01-09 Carrier Corp Centrifugal gas compressor
DE2255503A1 (de) * 1972-11-13 1974-05-16 Heinz Knebel Einrichtung zur stufenlos regulierbaren ausstossmengen-regelung fuer kreiselpumpen, ventilatoren und geblaese
JPS56121895A (en) * 1980-02-26 1981-09-24 Aisin Seiki Co Ltd Water pump
US4828454A (en) * 1986-06-06 1989-05-09 The United States Of America As Represented By The Secretary Of The Navy Variable capacity centrifugal pump
US5169286A (en) * 1989-03-09 1992-12-08 Yutaka Yamada Variable capacity centrifugal water pump with movable pressure chamber formed by impeller
AT506107B1 (de) * 2007-12-03 2009-11-15 Tcg Unitech Systemtechnik Gmbh Radialpumpe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1813747A (en) 1928-12-20 1931-07-07 Ingersoll Rand Co Centrifugal pump
DE10057098C1 (de) 2000-11-17 2002-03-28 Geraete & Pumpenbau Gmbh Regelbare Kühlmittelpumpe
DE102004054637A1 (de) 2004-11-12 2006-05-24 Geräte- und Pumpenbau GmbH Dr. Eugen Schmidt Regelbare Kühlmittelpumpe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012167953A1 (fr) * 2011-06-07 2012-12-13 Schaeffler Technologies AG & Co. KG Pompe à liquide de refroidissement réglable
CN103688061A (zh) * 2011-06-07 2014-03-26 谢夫勒科技股份两合公司 可调节的冷却介质泵

Also Published As

Publication number Publication date
DE102010022884A1 (de) 2011-12-08
EP2392828A3 (fr) 2013-01-23
US20110297111A1 (en) 2011-12-08

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