CN103314216B - Single vane pump - Google Patents

Single vane pump Download PDF

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Publication number
CN103314216B
CN103314216B CN201180052176.6A CN201180052176A CN103314216B CN 103314216 B CN103314216 B CN 103314216B CN 201180052176 A CN201180052176 A CN 201180052176A CN 103314216 B CN103314216 B CN 103314216B
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CN
China
Prior art keywords
rotor
end portions
axial end
axial
stator
Prior art date
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Active
Application number
CN201180052176.6A
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Chinese (zh)
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CN103314216A (en
Inventor
朱塞佩·洛比恩度
卡尔洛·帕克提
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.)
O·M·P·奥菲奇内·马佐科·帕尼奥尼有限公司
O M P Officine Mazzocco Pagnoni Srl
Original Assignee
O M P Officine Mazzocco Pagnoni Srl
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Publication of CN103314216A publication Critical patent/CN103314216A/en
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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
    • 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
    • F04C18/3442—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 the surfaces of the inner and outer member, forming the inlet and outlet opening
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • F01C21/108—Stators; Members defining the outer boundaries of the working chamber with an axial surface, e.g. side plates
    • 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
    • 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
    • F04C2240/00—Components
    • F04C2240/20—Rotors
    • 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
    • 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
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/005—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Saccharide Compounds (AREA)

Abstract

The present invention relates to a kind of single vane pump (110), this single vane pump comprises: stator (12), and chamber (14) limits in the stator; With rotor (116), rotor can rotate around spin axis (O-O).Rotor (116) comprises the column middle body (116a) and each relative column axial end portions (116b) all with the diameter equal with described predetermined diameter (D) with predetermined diameter (D).Rotor (116) is rotatably supported in chamber (14) at described relative axial end portions (116b) place.Blade (18) is slidably mounted in the corresponding roughly radial slot (20) of described rotor (116,216).Rotor (116) has predetermined total height (H1) and along described total height (H1) diameter equal with described predetermined diameter (D).Described stator (12) comprises the lid (12b) of the pump housing (12a) and the closed pump housing (12a), and the pump housing (12a) and closing cap (12b) are provided with the corresponding seat (122a, 122b) of the axial end portions (116b) for holding rotor (116).Each seat (122a, 122b) comprises the axial abutment surface (123) of the corresponding axial end portions (116b) for rotor (116).Axial distance (H2) between the axial abutment surface (123) of described seat (122a, 122b) is greater than the total height (H1) of rotor (116).

Description

Single vane pump
Technical field
The present invention relates to a kind of single vane pump.
Particularly, the present invention relates to a kind of single vane vacuum pump of the motor for motor vehicle, such vacuum pump is intended to produce predetermined pressure for the activation of the specific function arranged in the motor vehicle and operation, the servobrake of such as braking system.
This specification is specifically related to a kind of vacuum pump from start to finish, is under any circumstance understandable that, the content of specification is also applied to dissimilar pump usually.
Background technique
Usually, single vane vacuum pump blade of being included in the stator wherein limiting chamber, the rotor that can rotate around spin axis and being slidably mounted in the corresponding radial groove of rotor.
The rotor be made up of plastic materials in most cases comprises the column middle body and axial end portions with predetermined radii, and this axial end portions also has the shape of column but its radius is less than the radius of middle body.Rotor is axially rotatably supported in chamber end portion office.For this reason, stator is provided with the seat of the axial end portions for rotor.
Document FR2845735 discloses single vane vacuum pump of the rotor made with plastic materials of the above-mentioned type.
The also known single vane vacuum pump being provided with the rotor be made of plastics, in the rotor, two axial end portions all have the shape of column and the diameter less than the diameter of middle body.In this case, above-mentioned two axial end portions are accommodated in the corresponding seat compatibly formed in the stator.Document EP1361365 discloses such single vane vacuum pump.
In single vane pump of the prior art, be necessary to determine that rotor can rotate freely and not produce blocking in stator.In addition, be necessary, between the axial end portions and corresponding seat of rotor, guarantee the sealing of working fluid (air in the situation at vacuum pump).The operation of pump really depends on above-mentioned aspect largely.
Therefore, in the pump of prior art, the axial end portions of rotor must extremely accurately to the connection of the corresponding seat formed in the stator.Particularly, be necessary the bus of the cylinder surface of the axial end portions determining rotor and the plat surface exact quadrature of stator, the column middle body of rotor abuts against on this plat surface.The plat surface of above-mentioned stator then must be vertical with the bus of the cylinder surface of the middle body of rotor.For this reason, need very little axial dimension tolerance between rotor and stator, be generally 0.03 ~ 0.04mm.
In order to reach above-mentioned requirement, perform specific machining on the surfaces of the rotors and the stator.Particularly, the column middle body of rotor and axial end portions both stand grinding, perform so-called " side of asking (squaring) " rotor.Such operation have impact on the ultimate cost of rotor and single vane pump significantly, have impact on the production time in addition.
The fact that in prior art described above, the other shortcoming of pump relates to is, pulling just at the axial end portions place of rotor by the rotor of live axle, as already mentioned, this axial end portions has relatively little diameter.The arm of force pulling moment of torsion being applied to rotor is therefore relatively little, thus produces the high coupling force of the interface between axle and rotor, and the Fast Wearing of corresponding connecting surface.
Summary of the invention
Be overcome based on technical problem of the present invention, or at least reduce, the above-mentioned shortcoming relating to prior art.
Therefore the present invention relates to a kind of single vane pump with feature according to claim 1.
Preferred feature is described in the other claims.
Advantageously, single vane pump according to the present invention is more cost-saving than the single vane pump of prior art, but performance is identical.Really, make rotor by simple mode, and do not need specifically to process in order to " side of asking ".Particularly, after the molded single process of plastic materials, can be considered " completing " rotor.And, as hereinafter will describing in detail of this specification, due to the relatively large diameter of axial end portions, can pull for rotor the arm of force that moment of torsion provides relatively large, and along with the favourable reduction of the attachment force (therefore wearing and tearing) in axle-rotor connection place.
Accompanying drawing explanation
The other feature and advantage of the present invention will become more clear from detailed description of preferred embodiment more of the present invention, and accompanying drawing is used for reference to and provides as instruction and be not used in the object of restriction.In these figures:
Fig. 1 be according to prior art particularly according to the schematic diagram of the longitudinal component of single vane pump disclosed in document FR2845735;
Fig. 2 is the schematic diagram of the longitudinal component according to single vane pump of the present invention;
Fig. 3 is the schematic diagram of longitudinal Part portions of the first embodiment of the rotor that can use in single vane pump of the present invention;
Fig. 4 is the schematic cross-section of rotor of the Fig. 3 intercepted according to planar line IV-IV;
Fig. 5 is the schematic diagram of the longitudinal component of the second embodiment of the rotor that can use in single vane pump of the present invention;
Fig. 6 is the floor map of Fig. 5 rotor;
Fig. 7 is the floor map of the metal joint of rotor for Fig. 5;
Fig. 8 is the schematic diagram in cross section of the metal joint of the Fig. 7 intercepted according to planar line VIII-VIII.
Embodiment
First with reference to figure 1, the single vane pump according to prior art is shown.This pump reference character 10 entirety represents.
Single vane pump 10 comprises stator 12, in this stator 12, define chamber 14.It is inner that rotor 16 is accommodated in chamber 14, and rotor 16 can rotate around spin axis O-O.Blade 18 is slidably mounted in the corresponding roughly radial groove 20 of rotor 16.
Rotor 16 comprises the column middle body 16a with predetermined diameter D and has columnar shape and be less than the axial end portions of diameter D1 of diameter D.Rotor 16 is rotatably supported in chamber 14 at axial end portions 16b place.
Stator 12 comprises the lid 12b of pump housing 12a and closed pump housing 12a.Pump housing 12a is provided with the seat 22 for holding axial end portions 16b.
With reference to figure 2-Fig. 8, diagrammatically illustrate according to single vane pump of the present invention.This pump reference character 110 entirety represents.
In Fig. 2-Fig. 8, functionally represent and can not describe again with being marked by identical figure at the identical or equivalent structural element of the structural element of above-described single vane pump 10 with reference to figure 1.
In a preferred embodiment, single vane pump 110 of the present invention is for being intended to the vacuum pump used in the motor of motor vehicle.
Single vane pump 110 of the present invention and the single vane pump 10 of prior art have essence different, and reason is that the 116b of end sections to axial of the rotor 116 of pump 110 has the diameter identical with the diameter D of the column middle body 116a of rotor 116.
In the example of Fig. 2-Fig. 6, rotor 116 has predetermined overall height H 1 and the constant diameter D along whole height H 1.
Relative axial end portions 116b is contained in setting corresponding seat 122 within the stator 12.Particularly, pump housing 12a is provided with the seat 122a of the first axial end portions 11b for holding rotor 116, and lid 12b is provided with the seat 122b of the second axial end portions 116b for holding rotor 116.
Each 122a, 122b have the side surface of roughly column and comprise the axial abutment surface 123 of the corresponding axial end portions 116b for rotor 116.
These two relative seat 122a, 122b are all coaxial with the spin axis O-O of rotor 116, and the axial distance H2 between the axial abutment surface 123 of described seat 122a, 122b is greater than the overall height H 1 of rotor 116.
By such mode, at the run duration of pump 110, rotor 116 advantageously axially floats between the axial abutment surface 123 of relative seat 122a, 122b.Thus the preliminary dimension precision of carrying out specific machining to guarantee in the axial direction to rotor 116 is not needed.Really, according to the present invention, due to the accurate connection between the outer cylindrical surface of axial end portions 116b and the column side surface of seat 112a, 112b, obtain the sealing of the working fluid at rotor 116 place.
Because blade 18 is arranged in groove 20 with self having axial clearance, so moving axially of rotor 116 does not hinder by blade 18.
Claimant finds, advantageously, rotor 116 has geometrical construction highly simplified, and by plastic materials, preferred thermosetting resin carries out molded this rotor 116 of manufacture and is and simply.Relative to the situation using thermoplastic resin, under this rear a kind of situation, the surface finishing of rotor 116 has better characteristic, and directly can obtain rotor 116 by molded, and does not need mechanical grinding subsequently.
Preferably, as shown in Figure 3 and Figure 4, axial end portions 116b comprises the co-molded metal insert 124 being provided with the first opening 124a, and the running shaft O-O of this first opening 124a and rotor 116 is coaxial.Can close to opening 124a by the second through hole 124b be formed in the axial end portions 116b of rotor 116.
Opening 124a is preferably through hole and has part square substantially, and this part is intended to the squared ends of the correspondence holding live axle (not shown).
Metal insert 124 is substantially square, thus allows moment of torsion to effective transmission of rotor 116, and this moment of torsion is applied to rotor 116 by live axle.In addition, the outside dimensions of metal insert 124 can be selected fully large, thus can by limited stress transfer to rotor 116, described stress is suitable for the load capacity of plastic materials, rotor 116 is made up of this plastic materials, and the interface of described stress between the plastic materials of the shaft end 116b of metal insert 124 and rotor 116 produces relatively low contact force, thus decreases surface abrasion.
Claimant's rotor 116 observed in Fig. 3 and Fig. 4 can be advantageously used in following structure: the spin axis of live axle is aimed at the spin axis O-O of rotor 116.
Fig. 5 and Fig. 6 shows the second embodiment of the rotor 216 that can use in single vane pump of the present invention.
When this embodiment is preferred for such, in this case, the spin axis O-O of rotor has the predetermined offset E of the spin axis relative to live axle.E is shown in Figure 7 for this offset.This figure relates to metal joint 228, and this metal joint 228 is in operation and associates with rotor 216.
In fig. 5 and fig., functionally, to be represented by identical reference character at the identical or equivalent structural element of the structural element of above-described rotor 116 with reference to figure 3 and Fig. 4 and can not describe again.
Rotor 216 comprises two metallic pins 226 with predetermined radii R1, and these two metallic pins 226 are co-molded in rotor 216 along height H 3 at the part place relative symmetrically about spin axis O-O, and height H 3 is less than the overall height H 1 of rotor 216.Metallic pin 226 has the corresponding free end part 226a protruded in cantilever fashion from rotor 216.
Preferably, metallic pin 226 is co-molded in rotor 216 with the height of approximate greatly the height H 1 of rotor 216 2/3rds, thus when transmitting rotation torque, makes the minimise stress in rotor 216 structure.
Metal joint 228 shown in Fig. 7, Fig. 8 is associated with rotor 216.This joint 228 is provided with the first opening 228a for holding live axle.
Metal joint 228 also comprises two circular open 228b with predetermined radii R2, and these two circular open 228b are arranged symmetrically with on the opposite sides about the first opening 228a.In the unrestricted example of Fig. 7, metal joint 228 has roughly oval shape.
Opening 228a is preferably through hole and has part square substantially, and this part is intended to the end of the correspondence holding live axle.Fig. 7 shows the offset E between the spin axis of live axle and the spin axis O-O of rotor 216.
The free end part 226a of metallic pin 226 is contained in circular open 228b, and this annular opening is also preferably through hole, and rotor 216 and metal joint 228 are rotated as a whole.
Preferably, the radius R 2 of annular opening 228b is larger than the radius R 1 of metallic pin 226.More preferably, the radius R 1 that radius R 2 at least equals metallic pin 226 adds predetermined offset E.
Be in operation, rotor 116,216 of the present invention sideway swivel in stator 12, guarantee the fluid-tight sealing of the expectation between the side direction cylinder surface of the rotor at axial end portions 116b place and the side direction cylinder surface of seat 122a, 122b, described seat is respectively formed on pump housing 12a and closing cap 12b.
In the embodiment of Fig. 3 and Fig. 4, the transmission of motion to rotor is produced by metal insert 124 co-molded in the axial end portions 116b of rotor 116, wherein in the embodiment of Fig. 5-Fig. 8, produce the transmission of motion to rotor by metal joint 228, this metal joint connects with the metallic pin 226 be molded in rotor 216 together.In both circumstances, obtain rotor by plastics are molded, and do not require grinding action subsequently and do not need the axial dimension of reference stator to consider the narrow tolerance of size on axial direction.In addition, the spin axis fully away from rotor and/or live axle is wanted at the interface at live axle place between metallic material and plastic materials, such as, in any case, to produce contact surface power in a small amount.
Certainly to those skilled in the art; in order to meet the object of specific and subsidiary requirement; many variants and modifications can be carried out to above-described single vane pump, however all variants and modifications all cover by protection scope of the present invention of such as limiting in following claim.

Claims (2)

1. a single vane pump (110), comprising:
Stator (12), defines chamber (14) in described stator;
Rotor (116,216), described rotor can rotate around spin axis (O-O) and comprise column middle body (116a) and columnar phase to axial end portions (116b), described column middle body has predetermined diameter (D), described columnar phase all has the diameter equal with described predetermined diameter (D) to axial end portions, and described rotor (116,216) is rotatably supported in described chamber (14) at described end sections to axial (116b) place;
Blade (18), described blade is slidably mounted in the corresponding roughly radial slot (20) of described rotor (116,216);
Wherein, described rotor (116,216) has predetermined total height (H1) and along described total height (H1) diameter equal with described predetermined diameter (D);
Wherein, described stator (12) comprises the pump housing (12a) and closes the lid (12b) of the described pump housing (12a), the described pump housing (12a) and described lid (12b) are provided with corresponding seat (122a, 122b) for holding described rotor (116, 216) axial end portions (116b), each seat (122a, 122b) comprise for described rotor (116, 216) the axial abutment surface (123) of corresponding axial end portions (116b), wherein said seat (122a, axial distance (H2) between axial abutment surface (123) 122b) is greater than described rotor (116, 216) total height (H1),
Wherein, described rotor (116,216) is made up of plastic materials, and
Wherein, in the co-molded axial end portions in described at least one axial end portions (116b) of metal insert (124), described metal insert (124) is provided with the first opening (124a) for holding live axle, described first opening (124a) is coaxial with described spin axis (O-O) and can be close by corresponding the second opening (124b), and described second opening is formed in described at least one axial end portions (116b) of described rotor (116).
2. single vane pump according to claim 1 (110), wherein said pump (110) is vacuum pump.
CN201180052176.6A 2010-10-26 2011-10-26 Single vane pump Active CN103314216B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITMI2010A001984A IT1402417B1 (en) 2010-10-26 2010-10-26 MONOPAL PUMP
ITMI2010A001984 2010-10-26
PCT/IB2011/002539 WO2012056295A2 (en) 2010-10-26 2011-10-26 Single-vane pump

Publications (2)

Publication Number Publication Date
CN103314216A CN103314216A (en) 2013-09-18
CN103314216B true CN103314216B (en) 2016-03-09

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ID=43738101

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201180052176.6A Active CN103314216B (en) 2010-10-26 2011-10-26 Single vane pump

Country Status (3)

Country Link
CN (1) CN103314216B (en)
IT (1) IT1402417B1 (en)
WO (1) WO2012056295A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016042460A1 (en) * 2014-09-15 2016-03-24 Vhit S.P.A. Rotary pump
DE102015213099B3 (en) 2015-07-13 2016-08-04 Joma-Polytec Gmbh Plastic rotor for vacuum pump
EP3426893B1 (en) 2016-03-07 2022-06-01 Pierburg Pump Technology GmbH Automotive vacuum pump

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1454014A (en) * 1973-10-29 1976-10-27 Leybold Heraeus Verwaltung Rotary sliding vane pump
DE3033239A1 (en) * 1980-09-04 1982-04-08 Leybold-Heraeus GmbH, 5000 Köln Sliding vane type vacuum pump - has dowel type location of cylinder end wall to simplify assembly
EP0359139A2 (en) * 1988-09-10 1990-03-21 Barmag Ag Vane pump
FR2869958A1 (en) * 2004-05-07 2005-11-11 Peugeot Citroen Automobiles Sa Vacuum pump for e.g. diesel engine, has rotor with part, that is situated inside hollow body, having same cylindrical section as that of part situated outside the body, where section corresponds to nominal diameter of rotor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3762651D1 (en) * 1986-10-18 1990-06-13 Barmag Barmer Maschf WING CELL VACUUM PUMP.
DE3766931D1 (en) * 1986-10-18 1991-02-07 Barmag Barmer Maschf Fluegelzellenpumpe.
DE3813132A1 (en) * 1987-05-19 1988-12-15 Barmag Barmer Maschf Vane-cell pump
DE29924457U1 (en) * 1998-09-30 2003-04-17 Luk Automobiltech Gmbh & Co Kg vacuum pump

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1454014A (en) * 1973-10-29 1976-10-27 Leybold Heraeus Verwaltung Rotary sliding vane pump
DE3033239A1 (en) * 1980-09-04 1982-04-08 Leybold-Heraeus GmbH, 5000 Köln Sliding vane type vacuum pump - has dowel type location of cylinder end wall to simplify assembly
EP0359139A2 (en) * 1988-09-10 1990-03-21 Barmag Ag Vane pump
FR2869958A1 (en) * 2004-05-07 2005-11-11 Peugeot Citroen Automobiles Sa Vacuum pump for e.g. diesel engine, has rotor with part, that is situated inside hollow body, having same cylindrical section as that of part situated outside the body, where section corresponds to nominal diameter of rotor

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Publication number Publication date
IT1402417B1 (en) 2013-09-04
WO2012056295A2 (en) 2012-05-03
ITMI20101984A1 (en) 2012-04-27
WO2012056295A3 (en) 2013-06-27
CN103314216A (en) 2013-09-18

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