EP0081659A1 - Groupe de pompe entraîné par un moteur électrique - Google Patents

Groupe de pompe entraîné par un moteur électrique Download PDF

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Publication number
EP0081659A1
EP0081659A1 EP82109766A EP82109766A EP0081659A1 EP 0081659 A1 EP0081659 A1 EP 0081659A1 EP 82109766 A EP82109766 A EP 82109766A EP 82109766 A EP82109766 A EP 82109766A EP 0081659 A1 EP0081659 A1 EP 0081659A1
Authority
EP
European Patent Office
Prior art keywords
electric motor
pump unit
unit according
interior
pump
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
EP82109766A
Other languages
German (de)
English (en)
Other versions
EP0081659B1 (fr
Inventor
Achill Kessler
Helmut Dipl.-Ing. Rembold
Manfred Ruoff
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.)
OFFERTA DI LICENZA AL PUBBLICO
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0081659A1 publication Critical patent/EP0081659A1/fr
Application granted granted Critical
Publication of EP0081659B1 publication Critical patent/EP0081659B1/fr
Expired 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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/06—Silencing
    • 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
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • F04C11/008—Enclosed motor pump units
    • 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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0042—Systems for the equilibration of forces acting on the machines or pump
    • F04C15/0049—Equalization of pressure pulses

Definitions

  • the invention is based on a pump unit according to the preamble of the main claim.
  • a pump unit of this type is already known, in which the medium channels for the removal of the pressure medium run in two connecting pieces arranged on the outside of the pump housing.
  • a gaseous pressure medium such as air
  • the flow noises occurring during operation, but also the motor noises are perceived as very disruptive.
  • the known pump unit is fastened in a motor vehicle and is to be used to actuate a central locking system, for example.
  • the airborne and structure-borne noise generated by the pumping unit are introduced without damping into the body of the motor vehicle, which even serves as a soundboard.
  • the unit according to the invention with the characterizing features of the main claim has the advantage over the that the flow noise of the pump unit can be reduced without great effort if the cavities of the pump unit that are necessary anyway are used as sound-absorbing chambers.
  • the closed interior of the adapter in particular limited by the housings on the one hand of the vane pump and on the other hand of the electric motor, is connected to the interior of the housing of the electric motor via at least one through opening, in particular a throttle point.
  • the first-mentioned "silencing chamber” is followed by a second “silencing chamber”, which is present anyway and must be flowed through by the pressure medium during operation of the pump unit.
  • the flow noise mentioned at the outset is attenuated even further without having to drive an apparatus expenditure which increases the weight or the volume of the pump unit.
  • FIG. 1 shows a longitudinal section through an electric motor-driven pump unit
  • FIG. 2 shows a cross section along II-II in FIG. 1
  • FIG. 3 shows a partially sectioned top view according to III-III in FIG. 1.
  • a pump unit which consists essentially of a vane pump 1 and an electric motor 2.
  • the actual vane pump consists of a lifting ring 3, in which a cylindrical housing recess 4 is arranged eccentrically.
  • the housing recess 4 is axially delimited by two side plates 5, 6, the outer diameter of which corresponds to the outer diameter of the cam ring 3.
  • the cam ring 3 and side plates 5, 6 are secured against displacement by pins 7 with one another.
  • a rotor 8 concentric with the outer contour of the vane pump, in the radially arranged slots 9 of which vanes 10 are tightly and slidably guided.
  • the outer edges of the blades 10 touch the cylindrical inner wall of the housing recess 4 and divide the approximately sickle-shaped working space formed between the outer surface of the rotor 8 and the wall of the housing recess 4 into individual cells.
  • the rotor is guided on a pump shaft 11, which in turn is held in bearing bores arranged concentrically in the side plates 5, 6.
  • the vane cell pump which is delimited axially by the side plates 5, 6, is covered from above with a protective cover 13 and screwed onto a flange 14 of an essentially cylindrical adapter part 15 by means of three countersunk screws 12.
  • the adapter part 15 is essentially tubular and has a flat end wall 16 near its end facing away from the flange 14.
  • the end wall 16 is seated flat on a end plate-like end cover 17 of the electric motor 2 and is fastened there by means of cylinder head screws 18.
  • the adapter part is adjusted by the part of its cylindrical wall that is on the vane pump 1 the opposite side protrudes beyond the end wall 16 and abuts the cylindrical outer surface of the housing of the electric motor 2.
  • the cam ring 3 and the side plates 5, 6 are made of plastic, while the protective cover 13 and the adapter part 15 can be made of aluminum. Of course, these parts can also be made of plastic.
  • the cells divided by the vanes 10 change their size in the interior 4.
  • medium channels 22, 23 (FIG. 2) are shown in a manner known per se - and therefore only indicated by dash-dotted lines in the drawing. arranged for supply and discharge of the print medium.
  • the medium channel 22 opens - as indicated in FIGS. 1 and 3 - into the interior 19 of the adapter part 15.
  • the other medium channel 23 is covered by a projection 25 radially inward in the plane of the flange 14.
  • the projection 25 in turn carries a connecting piece 26 in which the other medium channel 23 continues. As can be seen in FIG. 3, the connecting piece 26 pierces the cylindrical wall of the adapter part 15 to the outside.
  • the closed interior 19 of the adapter part 15 is via a through opening 24, the flow cross section of which is approximately the same as that of the medium channel 22, connected to the interior of the housing of the electric motor 2, which is not known in the drawing - because it is known per se.
  • the passage opening 24 can also be designed as a throttle point in special exemplary embodiments.
  • the through opening 24 is provided on the side facing the electric motor 2 with an extension 27, which is covered by a filter plate 28, which is preferably designed as a wire mesh.
  • the interior of the electric motor 2 is connected to the outside of the electric motor via at least one opening 29 arranged in its housing wall, which is arranged in an area facing away from the end cover 17.
  • the breakthrough can also not be covered with an open-pore foam layer, not shown in the drawing, which acts as a sound-absorbing element.
  • a hose fitting 30 made of rubber or similar damping material is pushed onto the connecting piece 26, in which the medium channel 23 extends further.
  • the medium channel 23 is connected to the control chamber of an approximately membrane-operated pressure switch 32 via a T-branch 31 of the hose fitting 30.
  • the pressure switch optionally controls the function of the electric motor 2 in connection with an electronic control circuit, which is arranged on a circuit board 33.
  • the throttle point can also be molded directly into the line leading to the pressure switch 32 in the T-branch.
  • the free end 36 of the hose fitting 30 forms the outlet of the pump unit.
  • the vane pump 1 connected to the electric motor 2 via the adapter part 15, the pressure switch 32 and the hose fitting 30 are arranged together with a circuit board 33 in the interior of an outer housing.
  • the outer housing consists of a box-shaped part 38 closed from above with a cover 37, which has a cylindrical extension 39 on its side facing away from the cover 37. Box-shaped part 38 and cylindrical extension 39 are glued, for example.
  • the cover 37 can also be glued to the box-shaped part 38 or can be held by snap closures, which are not shown in the drawing but are known per se.
  • Openings 40 are arranged in the cover 37, via which the interior of the outer housing 37 to 39 is connected to the ambient atmosphere.
  • the openings 40 can also be covered with a cover made of, in particular, open-cell foam.
  • the electric motor 2 with the vane pump 1 attached to it is positively secured against rotation by form rings 41, 42 which are made of rubber or other elastic materials.
  • the electric motor stands on the bottom of the molded ring 42 and is held from above by a slightly deformed rubber ring 43, like the other molded rings 41, 42, which is supported on the inside of the cover 37.
  • the electric motor is controlled via connecting cables 44, 45, which are guided in the interior of the outer housing 37 to 39 and via connecting lines 45, also not shown, which lead to the circuit board 33.
  • the electronic circuit arranged on the circuit board 33 is supplied with current via connecting lines 46 which are only shown in broken lines in the drawing.
  • the interior of the cylindrical extension 39 of the outer housing is - as can be seen from what has been said above - separated from the rest of the interior in the box-shaped part 38 of the outer housing by the molded ring 41 inserted with slight prestress. For this reason, the molded ring 41 is connected to a plurality of flow openings 47 connecting the interior spaces mentioned.
  • the function of the pump unit is as follows: When the rotor 8 rotates in the direction of the arrow 48 (FIG. 2), pressure medium is drawn in through the medium channel 23 and a negative pressure is generated in the medium channel 23. In this direction of rotation, the vane pump works as a pressure sink. The pressure medium pushed out via the medium channel 22 reaches the interior 19 and from there via the interior of the electric motor 2, the opening 29 into the interior of the cylindrical extension 39 of the outer housing. From there, the pressure medium finally reaches the openings 40 in the cover 37 via the flow openings 47, from where the pressure medium can flow out to the free ambient atmosphere.
  • the electric motor 2 is always set in motion via the pressure switch 32 when the vacuum, e.g. has not yet reached a set value.
  • the vane pump 1 may also have to act as a pressure source.
  • the power supply to the electric motor 2 is reversed by means of the electronic control circuit on the circuit board 33, so that the motor 8 rotates counter to the arrow 48. It is obvious that the flow direction described above is reversed and that a pressure which is higher than the external pressure is present in the medium channel 23.
  • the flow noise is very strongly damped by the fact that the interior of the outer housing 37 to 39, as well as the interior of the electric motor 2 and the interior 19 of the adapter part 15 act as a series of silencing chambers.
  • the molded rings 41, 42, 43 which are made of rubber or a similarly damping material, provide structure-borne noise decoupling of the pump unit from the outer housing 37 to 39.
  • a structural sound decoupling of the pump assembly relative to the outer housing 37 to 39 is likewise effected by the shaped piece 30.
  • the throttling point 34 results in an airborne sound decoupling of the pressure switch 32 connected to the outer housing 37 to 39 in a sound-conducting manner: the throttling point means that only a quasi-static pressure is present at the pressure switch, so that the dynamic pressure fluctuations which stimulate the sound switch cannot reach the pressure switch.
  • the rubber material of the T-branch also decouples structure-borne noise.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
EP82109766A 1981-11-12 1982-10-22 Groupe de pompe entraîné par un moteur électrique Expired EP0081659B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3144983 1981-11-12
DE19813144983 DE3144983A1 (de) 1981-11-12 1981-11-12 Elektromotorisch angetriebenes pumpaggregat

Publications (2)

Publication Number Publication Date
EP0081659A1 true EP0081659A1 (fr) 1983-06-22
EP0081659B1 EP0081659B1 (fr) 1985-04-10

Family

ID=6146254

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82109766A Expired EP0081659B1 (fr) 1981-11-12 1982-10-22 Groupe de pompe entraîné par un moteur électrique

Country Status (3)

Country Link
EP (1) EP0081659B1 (fr)
JP (1) JPS5888485A (fr)
DE (2) DE3144983A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2230051A (en) * 1989-02-17 1990-10-10 Walbro Corp In-tank fuel pump mount
FR2829192A1 (fr) * 2001-09-05 2003-03-07 Peugeot Citroen Automobiles Sa Dispositif de pompage de l'air d'alimentation d'un organe fonctionnel de vehicule automobile
WO2014135202A1 (fr) * 2013-03-05 2014-09-12 Pierburg Pump Technology Gmbh Agencement de pompe à vide de véhicule automobile électrique

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61291797A (ja) * 1985-06-17 1986-12-22 Hitachi Ltd 回転ベ−ン式ポンプ
DE4107411A1 (de) * 1991-03-08 1992-09-17 Hella Kg Hueck & Co Einrichtung zur lagerung eines elektromotors an einem gehaeuse
DE4435494A1 (de) * 1994-10-04 1996-04-11 Bosch Gmbh Robert Hydroaggregat
BR9904147A (pt) 1998-08-06 2000-09-05 Mitsubishi Electric Corp Compressor giratório, ciclo de refrigeração que utiliza o compressor, e refrigerador que utiliza o compressor
DE19848413B4 (de) * 1998-10-21 2009-06-04 Pierburg Gmbh Motor-Pumpeneinheit
CN117722331A (zh) * 2018-02-12 2024-03-19 中山市艾能机械有限公司 一种湿喷机用一体式防水空压机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT127658B (de) * 1930-07-11 1932-04-11 Gustav Friedl Elektrisch angetriebenes Kapselgebläse, insbesondere zum Kühlen des Films bei Tonfilmapparaten.
DE562325C (de) * 1929-07-03 1932-10-24 Werner Sack Dipl Ing Gaspumpe mit umlaufenden Kolben
US3513476A (en) * 1967-06-21 1970-05-19 Tokyo Shibaura Electric Co Rotary compressors
DE2422314A1 (de) * 1973-05-09 1974-11-28 British Oxygen Co Ltd Oelabgedichteter umlaufverdichter
DE2162268B2 (de) * 1970-12-15 1979-07-26 Domenico Olmo Vicenza Frigo (Italien) Gehäuse für ein Motor-Verdichteraggregat

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5346149A (en) * 1976-10-08 1978-04-25 Naka Tech Lab Insect preventing screen with blind

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE562325C (de) * 1929-07-03 1932-10-24 Werner Sack Dipl Ing Gaspumpe mit umlaufenden Kolben
AT127658B (de) * 1930-07-11 1932-04-11 Gustav Friedl Elektrisch angetriebenes Kapselgebläse, insbesondere zum Kühlen des Films bei Tonfilmapparaten.
US3513476A (en) * 1967-06-21 1970-05-19 Tokyo Shibaura Electric Co Rotary compressors
DE2162268B2 (de) * 1970-12-15 1979-07-26 Domenico Olmo Vicenza Frigo (Italien) Gehäuse für ein Motor-Verdichteraggregat
DE2422314A1 (de) * 1973-05-09 1974-11-28 British Oxygen Co Ltd Oelabgedichteter umlaufverdichter

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2230051A (en) * 1989-02-17 1990-10-10 Walbro Corp In-tank fuel pump mount
GB2230051B (en) * 1989-02-17 1993-01-27 Walbro Corp In-tank fuel pump mount
FR2829192A1 (fr) * 2001-09-05 2003-03-07 Peugeot Citroen Automobiles Sa Dispositif de pompage de l'air d'alimentation d'un organe fonctionnel de vehicule automobile
EP1291530A1 (fr) * 2001-09-05 2003-03-12 Peugeot Citroen Automobiles SA Dispositif de pompage
WO2014135202A1 (fr) * 2013-03-05 2014-09-12 Pierburg Pump Technology Gmbh Agencement de pompe à vide de véhicule automobile électrique
CN105121856B (zh) * 2013-03-05 2017-09-22 皮尔伯格泵技术有限责任公司 电动车辆真空泵总成
US9989058B2 (en) 2013-03-05 2018-06-05 Pierburg Pump Technology Gmbh Electric motor vehicle vacuum pump arrangement

Also Published As

Publication number Publication date
JPS5888485A (ja) 1983-05-26
DE3144983A1 (de) 1983-05-19
DE3263018D1 (en) 1985-05-15
EP0081659B1 (fr) 1985-04-10

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