EP3475573B1 - Kfz-vakuumpumpen-anordnung - Google Patents

Kfz-vakuumpumpen-anordnung Download PDF

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Publication number
EP3475573B1
EP3475573B1 EP16731591.0A EP16731591A EP3475573B1 EP 3475573 B1 EP3475573 B1 EP 3475573B1 EP 16731591 A EP16731591 A EP 16731591A EP 3475573 B1 EP3475573 B1 EP 3475573B1
Authority
EP
European Patent Office
Prior art keywords
pump
arrangement
outlet
motor vehicle
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
Application number
EP16731591.0A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3475573A1 (de
Inventor
Sebastian Cramer
Nabil Salim AL-HASAN
Daniel Müller
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.)
Pierburg Pump Technology GmbH
Original Assignee
Pierburg Pump Technology 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 Pierburg Pump Technology GmbH filed Critical Pierburg Pump Technology GmbH
Publication of EP3475573A1 publication Critical patent/EP3475573A1/de
Application granted granted Critical
Publication of EP3475573B1 publication Critical patent/EP3475573B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • 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
    • 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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/06—Silencing
    • F04C29/065—Noise dampening volumes, e.g. muffler chambers
    • 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
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
    • F04C29/126—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type
    • 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
    • F04C2220/00—Application
    • F04C2220/10—Vacuum
    • F04C2220/12—Dry running
    • 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
    • F04C2250/00—Geometry
    • F04C2250/20—Geometry of the rotor
    • 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
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
    • F04C29/126—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type
    • F04C29/128—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type of the elastic type, e.g. reed valves

Definitions

  • the invention relates to an electric motor vehicle vacuum pump arrangement with a housing assembly with an inlet opening arrangement and an outlet opening arrangement, which has a pump unit and a drive motor, the pump unit comprising a pump rotor housing consisting of an end wall on the inlet and outlet sides and a pump rotor housing part arranged between them Include a pump rotor chamber, in which a pump rotor is provided, the drive motor having a motor rotor and a motor stator, sound-damping means being provided for noise reduction, the sound-damping means having at least two sound-damping chambers connected in series, the first sound-damping chamber being fluidly connected to the pump rotor chamber and via a first connection arrangement is fluidly connected to the second silencing space via a second connection arrangement and the second silencing space is fluidly connected to the outlet opening Connection arrangement is connected, wherein at least one sound absorbing means is provided in the form of a bore arrangement for the outlet opening arrangement.
  • An electrically driven vehicle vacuum pump generates a vacuum of, for example, absolutely 100 millibars, 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 with small vacuum pumps and with several 100 W with large vacuum pumps.
  • the noise emissions can be so considerable that extensive measures for sound absorption and / or sound shielding have to be carried out.
  • An example of this is in the WO 2014/135202 A1 described.
  • the construction of this electric vacuum pump is very complex due to the sound damping means used and requires a relatively large amount of space.
  • a generic vehicle vacuum pump arrangement is from the JP 2012-87701 A known. But here too the sound absorption is not sufficient for many applications due to the structure and arrangement.
  • the object of the invention is therefore to provide an electric motor vehicle vacuum pump arrangement with low noise emissions, which avoids the above-mentioned disadvantages in a simple and inexpensive manner.
  • the outlet opening arrangement is provided as a bore arrangement in the form of successive bore elements in the end wall on the outlet side, in the pump rotor housing part and in the end wall on the inlet side. It has been shown that such a simple measure can considerably reduce the noise emissions that occur. As a result, the vacuum pump requires less installation space and is less expensive to manufacture. Due to the special design of the outlet opening arrangement, existing housing parts can be used for the outlet opening and considerable sound absorption is ensured by the reflection properties of the bore arrangement.
  • the first sound absorption space is integrated in the end wall on the outlet side.
  • the first connection arrangement can consist of a first pump outlet with a non-return valve and a second pump outlet arranged offset, as seen in the direction of rotation of the pump rotor.
  • the first soundproofing space is advantageously produced by a cover element arranged on a side of the outlet-side end wall facing away from the pump rotor, the second connection arrangement being designed as a groove in the outlet-side end wall.
  • the composite housing has an end cover element which engages around the outlet-side end wall in such a way that a second soundproofing space is formed.
  • the sound absorption can be improved once again in that the bore element in the inlet-side end wall widens towards the outlet side.
  • the pump assembly is advantageously arranged coaxially with the drive motor, a rotor shaft of the drive rotor being mounted in the end wall on the inlet side via bearing means.
  • the inlet opening arrangement is provided in the end wall on the inlet side.
  • An electric motor vehicle vacuum pump arrangement 2 is shown, which is used in a motor vehicle to provide vacuum with an absolute pressure of, for example, 100 mbar and lower.
  • 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 motor vehicle vacuum pumps is becoming increasingly necessary because the motor vehicle internal combustion engine does not run continuously during vehicle operation.
  • the motor vehicle vacuum pump arrangement 2 essentially consists of a housing assembly 4 which has a drive motor 6 and a pump unit 8.
  • the drive motor 6 is provided in a pot-shaped motor housing 10 and has a drive rotor 12 in a known manner (see here Figure 2 ) and a drive motor stator, not shown.
  • the pump unit 8 has a pump rotor housing 14, which consists of an end wall 16, 18 on the inlet and outlet sides and a pump rotor housing part 20 arranged between them (see also in particular here Figure 2 ).
  • the housing assembly 4 also has an end cover element 22 which engages around the outlet-side end wall 18 and the pump rotor housing part 20 and engages in a form-fitting manner on the inlet-side end wall 16.
  • the rotor housing 14 with the end cover element 22 is connected to the cup-shaped drive motor housing 10 via a first flange element 24.
  • the first flange part 24 in turn connects, with the interposition of damping body 26, to a second flange part 28, via which the motor vehicle vacuum pump arrangement 2 can be connected to a body component of a motor vehicle.
  • the Figure 1 furthermore shows an inlet opening arrangement 30 in the form of a plastic tube element which is provided in the end wall 16 on the inlet side and through which air to be discharged from a motor vehicle actuator is to be guided into the pump unit 8.
  • 32 designates the outlet opening arrangement from which the air compressed by the pump assembly 8 is discharged into the environment,
  • FIG. 2 now shows a sectional view of the pump assembly 8 and a part of the drive motor 6.
  • the drive motor 6 has a drive rotor 12 which is non-rotatably fastened on a drive rotor shaft 34, the drive rotor shaft 34 simultaneously as a rotor shaft for one in a pump rotor chamber 35 of the pump rotor housing 14 provided pump rotor 36 is used.
  • the drive rotor shaft 34 is in this case mounted in the end wall 16 on the inlet side via a bearing means 38 designed as a roller bearing.
  • 40 denotes an electrical connection cable for supplying power to the drive motor 6.
  • the pump rotor 36 which is sucked in through the inlet opening arrangement 30 and in the rotor space 35 by the vane cell rotor compressed air is expelled from the rotor space 35 through a first connection arrangement 42.
  • the first connection arrangement 42 in this case consists in a known manner of a first pump outlet 44, which has a check valve 46 to reduce noise, and of a second pump outlet 48, which is arranged offset in the direction of rotation of the pump rotor 36. Via this first connection arrangement 42, the compressed air reaches a first sound absorption space 50, which is integrated in the end wall 18 on the outlet side.
  • the first soundproofing space 50 has a cover element 52 on the side of the outlet-side end wall 18 facing away from the pump rotor 36.
  • This cover element 52 also produces the second connection arrangement 54, which is essentially designed as a groove 56 in the outlet-side end wall 18.
  • the compressed air which is damped in a first sound damping space 50, is transferred into a second sound damping space 58.
  • This soundproofing space 58 is essentially produced by the end cover element 22 encompassing the outlet-side end wall 18 in a fluid-tight manner.
  • the compressed air is then released to the environment via the outlet opening arrangement 32 designed as a bore arrangement 60.
  • the bore arrangement 60 is constructed from successive bore elements 62, 64 and 66.
  • the bore element 62 is provided in the outlet-side end wall 18, the bore element 64 in the pump rotor housing part 20 and the bore element 66 in the inlet-side end wall 16. Due to the fact that the bore arrangement 60 forms an elongated tubular element in this way, an additional damping of the airborne sound can be achieved.
  • the bore element 66 is also widened in the direction of the outlet side, as a result of which the sound is reduced again due to a change in pressure.
  • connection arrangement 54 can also be designed additionally or solely as a bore arrangement.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
EP16731591.0A 2016-06-22 2016-06-22 Kfz-vakuumpumpen-anordnung Active EP3475573B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2016/064429 WO2017220141A1 (de) 2016-06-22 2016-06-22 Kfz-vakuumpumpen-anordnung

Publications (2)

Publication Number Publication Date
EP3475573A1 EP3475573A1 (de) 2019-05-01
EP3475573B1 true EP3475573B1 (de) 2020-08-05

Family

ID=56194488

Family Applications (2)

Application Number Title Priority Date Filing Date
EP16731591.0A Active EP3475573B1 (de) 2016-06-22 2016-06-22 Kfz-vakuumpumpen-anordnung
EP17713583.7A Active EP3475574B1 (de) 2016-06-22 2017-02-01 Trockenlaufende flügelzellen-gaspumpe

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP17713583.7A Active EP3475574B1 (de) 2016-06-22 2017-02-01 Trockenlaufende flügelzellen-gaspumpe

Country Status (5)

Country Link
US (2) US11261869B2 (zh)
EP (2) EP3475573B1 (zh)
JP (1) JP2019518905A (zh)
CN (2) CN109154293B (zh)
WO (2) WO2017220141A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3577342A1 (de) * 2017-02-01 2019-12-11 Pierburg Pump Technology GmbH Flügelzellen-gaspumpe
CN113374691B (zh) * 2021-06-04 2023-01-20 淄博真空设备厂有限公司 一种汽车节能真空泵

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Also Published As

Publication number Publication date
CN109154293A (zh) 2019-01-04
US20190323506A1 (en) 2019-10-24
EP3475574B1 (de) 2020-04-01
EP3475573A1 (de) 2019-05-01
US20200309134A1 (en) 2020-10-01
WO2017220212A1 (de) 2017-12-28
JP2019518905A (ja) 2019-07-04
EP3475574A1 (de) 2019-05-01
US10995757B2 (en) 2021-05-04
CN109154294A (zh) 2019-01-04
US11261869B2 (en) 2022-03-01
CN109154294B (zh) 2019-12-31
CN109154293B (zh) 2021-04-13
WO2017220141A1 (de) 2017-12-28

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