DE102014107735B4 - Wing with axial seal - Google Patents

Wing with axial seal

Info

Publication number
DE102014107735B4
DE102014107735B4 DE102014107735.0A DE102014107735A DE102014107735B4 DE 102014107735 B4 DE102014107735 B4 DE 102014107735B4 DE 102014107735 A DE102014107735 A DE 102014107735A DE 102014107735 B4 DE102014107735 B4 DE 102014107735B4
Authority
DE
Germany
Prior art keywords
wing
insert
body
pump
opening
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.)
Expired - Fee Related
Application number
DE102014107735.0A
Other languages
German (de)
Other versions
DE102014107735A1 (en
Inventor
Emin Ahmeti
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.)
Schwaebische Huettenwerke Automotive GmbH
Original Assignee
Schwaebische Huettenwerke Automotive 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 Schwaebische Huettenwerke Automotive GmbH filed Critical Schwaebische Huettenwerke Automotive GmbH
Priority to DE102014107735.0A priority Critical patent/DE102014107735B4/en
Publication of DE102014107735A1 publication Critical patent/DE102014107735A1/en
Application granted granted Critical
Publication of DE102014107735B4 publication Critical patent/DE102014107735B4/en
Application status is Expired - Fee Related legal-status Critical
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0003Sealing arrangements in rotary-piston machines or pumps
    • F04C15/0023Axial sealings for working fluid
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01CROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08Rotary pistons
    • F01C21/0809Construction of vanes or vane holders
    • F01C21/0881Construction of vanes or vane holders the vanes consisting of two or more parts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30Rotary-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
    • F04C18/34Rotary-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
    • F04C18/344Rotary-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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00Rotary-piston machines or pumps
    • F04C2/30Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 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 groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 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 groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C2/3448Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 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 groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member with axially movable vanes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C25/00Adaptations of pumps for special use of pumps for elastic fluids
    • F04C25/02Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05CINDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00Metals
    • F05C2201/02Light metals
    • F05C2201/021Aluminium
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05CINDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00Synthetic polymers, e.g. plastics; Rubber
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05CINDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2251/00Material properties
    • F05C2251/04Thermal properties
    • F05C2251/042Expansivity
    • F05C2251/046Expansivity dissimilar

Abstract

Wing (1) for a vane pump, in particular a vacuum pump, with a wing body (2), the wing body (2) at least one end face (3, 4), which faces a lid or a bottom of a pump chamber of the vane pump, an opening ( 5), and an insert (6) disposed in the opening (5) and axially movably guided in the opening (5), the wing body (2) on the end faces (3, 4) facing the bottom and the lid. an opening (5) and in each of the openings (5) an insert (6) is arranged, wherein the wing body (2) between the two openings is formed as a hollow body, both inserts (6) by a common clamping device (7, 8 ) are acted upon and the tensioning device (7, 8) with two inserts (6), characterized in that the inserts (6) together with the clamping device (7, 8) in the wing body (2) can be inserted.

Description

  • The invention relates to a wing for a vane pump, preferably a vacuum pump, wherein the wing comprises a wing body, which at its end faces, which face a lid or bottom of a pump chamber of the vane pump, each having an opening in which an insert and a clamping device are, wherein the inserts and the clamping device can be inserted together in the wing body.
  • In order to save weight and costs, but also from a tribological point of view, metal materials are increasingly being replaced by plastics in pump construction. For example, the vane of a vacuum pump may be formed of a plastic, while the pump body and thus also the pump chamber is made of a metal, for example aluminum. Both materials used in this case generally have different coefficients of expansion. This may result in the heating or cooling of the pump to deviations in the dimensions of the two parts, which affect the separation of the suction side and pressure side in the pump chamber at least, since the oil otherwise used for sealing is no longer sufficient to reliably seal the gap.
  • On the other hand can be compensated by the intelligent use of materials with different coefficients of expansion manufacturing technology unavoidable and / or allowable component tolerances. This can mean that the finished parts do not have to have an achievable with great effort manufacturable feasible tolerance minimum dimension to still safely and reliably produce a necessary tightness. Reduced manufacturing costs can save costs, for example, by simplifying manufacturing or producing fewer rejects.
  • From the DE 79 26 973 U1 is a vane pump with a stator, a rotor and a plurality of wings known, the wings are linearly movably mounted in slots of the rotor. The DE 85 34 211 U1 relates to a vane pump with a plurality of wings, each wing consists of two adjacent to each other at an angle to the direction of parting line contiguous parts with two different lengths summits. The DE 200 18 958 U1 relates to a vane pump with a slide which is arranged on at least one of its ends in the slider longitudinal direction displaceable on the slide. The DE 10 2006 057 003 A1 and the DE 10 2009 017 332 A1 each relate to a rotary piston machine with a rotor and a plurality of wings held displaceably in the rotor. Each of the wings consists of two wings, which are pressed by means of a spring element against the rotor laterally closing walls of a stator. The CH 337 605 A relates to a rotary vane rotary machine with two rotors, which are arranged in a pump space. Each of the rotors supports one wing in opposite slots. Both wings are biased by means of a force acting on both wings spring element in the direction of the rotors radially surrounding the pump chamber wall. The US Pat. No. 3,995,976 relates to a vane pump with a wing biased by a spring element against a radially surrounding the stator stator wall and consist of three separate parts. The US Pat. No. 4,518,333 A relates to a vane pump in which the wings are at least partially coated with a sliding material. The US 5,224,850 A relates to a vane pump in which each of the vanes consists of several parts, so that all of a slot in a rotor projecting sides of the wing can be pressed by a single spring element against the respective adjacent inner wall of a stator surrounding the rotor. The JP 2007-239 660 A relates to an adjustable vane pump in which the stator can be moved linearly relative to the rotor.
  • It is therefore an object of the invention to provide a vane for a vane pump and a vane pump, which does not have the disadvantages mentioned above.
  • This object is achieved by the wing of claim 1 and the vane pump of claim 9.
  • Further embodiments of the invention are the subject of the dependent claims. These can be combined in a technologically meaningful way. In this case, features of the subclaims, as far as appropriate, can be combined across categories with each of the independent claims. The description, in particular in conjunction with the drawings, additionally characterizes and specifies the invention.
  • According to a first aspect, the invention relates to a wing for a vane pump, in particular a vacuum pump. The wing comprises a wing body of plastic and / or metal, which has an opening on at least one end face, which faces a cover or bottom of a pump chamber of the vane pump. In the opening an insert is arranged and guided axially movable. For example, a tensioning device disposed in the wing body biases the insert towards the bottom or the lid.
  • The insert may also be made of plastic and / or metal or at least parts Made of a plastic. It can consist of several layers and / or several separate or connected parts. For example, the insert may have a base body formed of a plastic, and a metal foil or lacquer applied to the base body may form a surface of the insert. But it can also consist of several layers and be formed in one piece or in one piece urgeformt of a material as a compact body.
  • The material may be a low elastically deformable material, with no or very little abrasion and good sliding properties, which can be optimally adapted to the shape of an inner surface of the bottom or lid, with as little or no friction as possible , which brake a rotation of the wing generated. Also, the shape of the insert can be chosen so that the insert touches the floor or lid only linearly, for example by a rounding or sharpening of the lid or the floor facing surface. Thus, the wing may have a wedge-gap geometry on the face side for promoting a hydraulic lubrication pressure build-up in order to avoid the occurrence of mixed friction states during operation. The aim is to reduce friction between the blade end face and the radial inner wall of the pumping chamber and / or the wear on at least one of the sliding surfaces on the wing or the pump chamber radial wall.
  • Alternatively, the insert may be formed of an elastically non-deformable material. The abutment surface of the insert for abutment with the bottom or lid can also be lip-shaped, with at least one single straight lip or at least one circumferential lip, the at least one circumferential lip enclosing an area containing, for example, lubricant of the pump or fluid to be delivered, For example, oil can absorb further frictional forces.
  • In the engagement region of the insert in the opening, the surfaces of the wing and / or the corresponding mating surfaces may be coated in the interior of the opening in order to ensure a possible resistance-free sliding of the insert in the wing body. This engagement region can simultaneously form a guide region, in which the insert in the wing body is preferably guided tightly in order to prevent tilting or bending of the insert during operation of the pump. The insert itself may be a compact body or a hollow profile that may have reinforcing ribs to increase the rigidity of the insert. The hollow profile and the reinforcing ribs may be integrally formed, for example, in an injection molding or sintering process. The surface forming the outside of the insert can subsequently be coated or be provided with a suitable surface already falling from the tool.
  • The insert may further comprise a wear control, for example a conductive layer, which, in good time before reaching a critical thickness of the insert, for example due to abrasion, generates corresponding information in, for example, a central computer of an automobile, which is then read out at the next inspection can be.
  • The wing may be formed of a metal, but it is preferably formed of a plastic. The plastic may in particular be a polymer. The plastic may be a fibrous or otherwise reinforced plastic.
  • The wing or wing body has an opening at each of said end faces. In each of the two openings in each case an insert may be arranged. The wing body is formed between the two openings as a hollow body. The hollow body may have internal reinforcing ribs for stabilization, which prevent the blade body from being deformed or collapsing under the pressure of the fluid to be delivered. The reinforcing ribs may be rectilinear ribs which are arranged parallel to one another and / or intersect at a right angle or, for example, form a honeycomb structure. The reinforcing ribs may be formed separately from the wing body and subsequently inserted into the wing body and connected thereto. Alternatively, the reinforcing ribs may be integrally formed with the wing body or formed in one piece. The wing body with or without the reinforcing ribs can also be constructed of two half-shells, which are connected to each other in a positive, force and / or material fit after the molding process and / or the installation of the clamping device and / or the insert / inserts. Instead of the ribs and spacers in the form of columns can cause the stiffening of the wing body. As a further or additional alternative, the structure of the wing may have geometries that guide, fix and / or position the tensioning device and / or inserts relative to the wing. Additionally or alternatively, the leading and / or trailing side (s) in the direction of rotation of the blade may have a stabilizing shape, for example wave-shaped with sinusoidal, rectangular, triangular or sawtooth-shaped waves.
  • The tensioning device can have at least one spring element or be formed by a pressurization device, which acts on the insert with a pressurized fluid. For pressurizing the insert with pressurized fluid can For example, a cylinder filled with gas can serve with a piston, or the pressurized fluid can be directed from the pressure side of the pump into the interior of the wing. The pressurized fluid may alternatively be provided by another unit, for example an internal combustion engine or a separate source.
  • The spring element may consist of an elastically deformable solid body or at least have a leaf, spiral or other compression spring. In order to ensure a uniform pressing of the insert over its axial length to the lid or bottom, in particular two, three or more spring elements can be arranged side by side and / or one behind the other.
  • If the wing has an insert on each end face, each of these inserts can have a separate tensioning device, which is supported on a structure of the wing with an end pointing away from the insert. According to the invention, both inserts will be biased together by a common clamping device in their respective direction. This means that the clamping device is arranged between the two inserts in the wing body and is supported on both inserts.
  • The tensioning device is fixedly connected to both inserts so that the tensioning device and the inserts form a component that is input in its entirety through one of the openings in the wing.
  • The vane, which is made of a plastic, for example, may have a wall thickness equal to or less than 1.5 mm, at least in the region where the opening in the vane is formed. Forms the wing, as described above, a hollow structure, the thickness of the wing can be between 1 mm and 3 mm. In this case, the wing preferably has a maximum point thickness of 2 mm, while the average thickness of the wing wall is less than 2 mm, particularly preferably less than 1.8 mm.
  • The use is in particular a sealing strip made of a solid material or a hollow structure, which abuts the lid and / or the bottom during operation of the pump and reliably separates a pressure side of the pump from a suction side of the pump. Due to the above-described features of the wing with / the axially movable sealing strip / n this reliable separation of suction and pressure side is guaranteed even at higher temperatures of more than 50 ° C.
  • While the medium to be pumped, such as oil, has a lower viscosity with increasing temperature, the material with a higher coefficient of thermal expansion, here for example the wing or blade insert made of plastic, can expand more than the pump chamber made of, for example, metal. That is, the face of the wing, respectively the insert "grow" relative to the pump chamber, whereby the end face is pressed with an increasing pressure against the radial inner wall of the pump chamber. This higher pressure causes higher frictional forces, which slows down the wing. The fact that the insert can retract into the wing, this increasing pressure can be compensated, so that a pressure of the end face to the pump chamber inner wall despite changing temperature in the pump chamber has a substantially constant value.
  • The same applies to the case that the thermal expansion coefficient of the pump chamber is greater than that of the wing, respectively use. In this case, the pressure of the end face to the radial pump chamber inner wall would decrease with increasing temperature, which could open a gap between the pump chamber wall and the end face of the wing, resulting in an overflow of medium from the pressure side to the suction side. In this case, the tensioning device can press the wing or insert against the pump chamber wall, so that the pressure of the wing on the pump chamber wall remains substantially constant and the gap does not open despite increasing coefficients of thermal expansion in the pump chamber.
  • Another aspect relates to a vane pump with a pump body made of a first material having a first expansion coefficient and at least one wing of the type described in the first aspect of a second material having a second, different from the first coefficient of expansion coefficient of expansion.
  • The vane comprises a vane body, each having an opening on a front side facing a bottom or a lid of a pump chamber of the pump, and an insert disposed in each of the two openings, the inserts being biased towards the bottom or lid by means of at least one clamping device.
  • The vane pump includes a pump housing, a stator and a rotor. The stator may be at least partially formed by the pump housing and forms a pump chamber having an inlet and an outlet for the fluid to be pumped. The rotor is arranged eccentrically in the stator and can be rotated relative to the stator about an axis of rotation.
  • The following consideration focuses on a single-screw vacuum pump that is advantageous in terms of construction costs and efficiency. In principle, the described wing concept but also advantageous for multi-leaf pumps.
  • The rotor includes a shaft connected to at least one rotor blade or wing. The wing has a forward and a trailing side in the direction of rotation and four end or side walls, two of which run on a tread formed for example by a Statorumfangswand, while at least one of the other two end faces on a laterally bounding the pump chamber wall, for example Bottom or lid of the pump chamber, at least largely sealingly abuts and expires. This prevents the suction side of the pump from being shorted to the pressure side of the pump, which would make it impossible to change the pressure of the fluid being transported by the pump.
  • In particular, at the operating temperature of the pump, the expansion coefficient of the blade may be greater than the expansion coefficient of the pump body. For example, the pump body made of a metal such as aluminum, while the wing is made of a plastic. The wing may in particular be the above-described wing. It is advantageous if the expansion coefficients of the wing body and the insert are as equal as possible, so that no gap forms in the region of the engagement of the insert in the wing body through which the medium to be conveyed can get into the interior of the wing.
  • Particularly advantageous effect of the two different expansion coefficients of the wing and pump chamber housing at higher temperatures of the fluid to be delivered, for example, 50 ° C and more, as ensured by the faster expansion of the wing in this temperature range, a secure tight fit of the wing on the bottom or lid is.
  • In particular, the vane pump may be a vacuum pump, for example the vacuum pump of an automobile powered by an internal combustion engine or a separate electric motor. The vacuum pump can serve, for example, for venting a brake, or provide another unit with a vacuum.
  • Another unclaimed aspect relates to a method for increasing evacuation performance of a vane pump having a pump body of a first material having a first expansion coefficient and at least one wing of a second material having a second expansion coefficient different from the first expansion coefficient.
  • At least one tensioning device and at least one insert are used in the wing. Subsequently, the wing is rotatably arranged with the clamping device and the insert in a pump chamber of the vane pump, so that the insert or the inserts are pressed by the clamping device against a lid and / or a bottom of the pump chamber of the pump. Occurring expansion differences between the pump body and the wing are compensated by the axially movable inserts, since the insert / the inserts is pressed against the lid and / or the bottom even at low temperatures sealingly / are. This is especially true at temperatures below 50 ° C.
  • For the entire description and claims, the term "a" is used as an indefinite article and the number of parts is not limited to a single one. Should "a" have the meaning of "only one", it will be understood by those skilled in the context, or will be unambiguously disclosed by the use of appropriate terms, such as "a single".
  • Hereinafter, an embodiment will be explained in more detail with reference to two drawings. Technical, essential to the invention features that can be found only in the figures are within the scope of the invention and can further develop the invention alone or in the combination shown advantageous.
  • It shows:
    • 1 : Wings in a sectional view;
    • 2 : View of a mission;
  • 1 shows an embodiment of a wing according to the invention 1 , here in a sectional view through the wing 1 , The wing 1 has a wing body 2 on. The wing body 2 includes two end faces 3 . 4 which, in an unillustrated installation of the wing in a pump chamber of a vane pump, a lid of the pump chamber and a bottom of the pump chamber facing respectively. To the rounded end of the wing 1 To reduce the wear, it may be useful to provide them with a wear layer and / or wear structure of a particularly resistant material.
  • At the front 3 points the wing body 2 an opening 5 on, in the one bet 6 or a sealing strip 6 guided in the axial direction movable. To the use 6 automatically at least partially into the opening 5 in and out of the opening 5 Being able to move out is inside the wing body 2 a clamping device 7 . 8th arranged the use 6 in the direction of the opening 5 pretensions out. The use 6 can be against the force of the tensioning device 7 . 8th in the opening 5 be pressed into it.
  • In the embodiment shown, the clamping device 7 . 8th by spring elements 7 . 8th educated. The spring elements 7 . 8th are coil springs that (in the 1 not shown) by guide sleeves or by a in the spring element 7 . 8th projecting pin, preferably made of plastic, can be guided to a lateral deflection of the spring elements 7 . 8th to prevent pressure. Alternatively or in addition to the helical or spiral springs shown, non-illustrated leaf springs, corrugated springs, disc springs or the like can also be used.
  • The spring elements 7 . 8th rely on their use 6 opposite side to a reinforcing rib 9 a reinforcing structure for the wing body 2 from. Shown are further reinforcing ribs 10 , which are transverse to the reinforcing rib 9 run. The wing body 2 may be formed at least partially as a hollow structure and the reinforcing structure serves to collapse the wing body 2 to prevent pressure.
  • The use 6 Can in the area where he is with the opening 5 is or may be, having a coating which, together with a smooth surface of the inner walls of the opening 5 (with or without coating), a frictional resistance between the outer surfaces of the insert 6 and the inner walls of the opening 5 keeps small.
  • Even if this is in the 1 not shown, each of the two end faces 3 . 4 an opening 5 in each case an insert 6 is arranged. In this case, each of the two bets 6 one clamping device each 7 . 8th be associated with both tensioning devices 7 . 8th at the reinforcement rib 9 can support. Alternatively, the two inserts 6 by a single clamping device 7 . 8th be biased towards the lid or floor, with the clamping device 7 . 8th in this case on both missions 6 can support.
  • The 2 shows in a plan view of the wing 1 the use 6 , Shown is the wing body 2 respectively the wall of the wing body 2 that the opening 5 surrounds and a recording and leadership for use 6 forms. The use 6 can be designed as a solid body or as a hollow profile. If it is designed as a hollow body, it may have reinforcing ribs, not shown in the interior, which constitute the insert 6 stabilize and stiffen.
  • The use 6 can be made in one piece, for example, in an injection molding process. The use 6 can have in the region of the lid or the bottom rests a coating that is, for example, harder and / or more resistant to abrasion and / or has better sliding properties, as the plastic from the use 6 sprayed. Also the four peripheral sides of the insert 6 and / or the surfaces of the inner walls of the opening 5 may have a corresponding coating, so that frictional forces between the outer sides of the insert and inner walls of the opening 5 in an intervention area of the insert 6 be kept small in the opening.
  • A wall thickness of the wing body 2 in the area of the opening 5 should not exceed a value of 2 mm when the wing 1 is formed as a hollow body and two inserts 6 having. When the use 6 is formed as a hollow profile body, the thickness or thickness of the profile wall is similar to the wall thickness, that is, it preferably has a value of 1.5 mm or greater
  • Although some possible embodiments of the improvement have been disclosed in the foregoing description, it is to be understood that numerous other variants of embodiments exist through the possibility of combining all of the mentioned and further all of the obvious technical features and embodiments. It is further understood that the embodiments are to be understood as examples only, which in no way limit the scope, applicability and configuration. Rather, the foregoing description would suggest a suitable way for the skilled person to realize at least one exemplary embodiment. It should be understood that in an exemplary embodiment, numerous changes in the function and arrangement of the elements may be made without departing from the scope and equivalents disclosed in the claims.
  • LIST OF REFERENCE NUMBERS
  • 1
    wing
    2
    wing body
    3
    front
    4
    front
    5
    opening
    6
    Insert, sealing strip
    7
    Clamping device, spring element
    8th
    Clamping device, spring element
    9
    reinforcing rib
    10
    reinforcing rib

Claims (10)

  1. Wing (1) for a vane pump, in particular a vacuum pump, with a wing body (2), said wing body (2) on at least one end face (3, 4), which faces a lid or a bottom of a pump chamber of the vane pump, an opening (5), and an insert (6) which is arranged in the opening (5) and axially movable in the opening (5) is guided, wherein the wing body (2) at the bottom and the lid facing end faces (3, 4) has an opening (5) and in each of the openings (5) an insert (6) is arranged, wherein the wing body (2) between the two openings is formed as a hollow body, both inserts (6) from a common clamping device (7 , 8) are acted upon and the tensioning device (7, 8) with two inserts (6), characterized in that the inserts (6) together with the tensioning device (7, 8) in the wing body (2) can be inserted.
  2. Wings behind Claim 1 wherein the tensioning device (7, 8) biases an insert (6) towards the bottom and the other towards the cover.
  3. Wings behind Claim 1 or 2 wherein the wing body (2) and / or the insert (6) are made of plastic or comprise plastic.
  4. Wing according to one of the preceding claims, wherein the clamping device (7, 8) has at least one spring element (7, 8).
  5. A wing according to the preceding claim, wherein the spring element (7, 8) consists of at least one compression spring.
  6. A wing according to any one of the preceding claims, wherein a wall thickness of the wing body (2) is equal to or greater than 1.5 mm at least in the region of the openings (5).
  7. A wing according to any one of the preceding claims, wherein the insert (6) is formed from a hollow profile and has reinforcing ribs (11).
  8. A wing according to any one of the preceding claims, wherein the insert (6) has a surface finish and / or coating at least in the region in which it bears against the cover or the bottom of the pump chamber, which has a coefficient of friction between the insert (6) and the cover, respectively reduced to the ground.
  9. A vane pump with a pump body of a first material having a first coefficient of expansion, at least one wing (1) of a second material having a second, different from the first coefficient of expansion coefficient of expansion, wherein the wing (1) a wing according to one of Claims 1 to 8th is.
  10. Vane pump after Claim 9 , wherein at operating temperature, the expansion coefficient of the wing (1), for example a plastic, is greater than the coefficient of expansion of the pump body, for example aluminum.
DE102014107735.0A 2014-06-02 2014-06-02 Wing with axial seal Expired - Fee Related DE102014107735B4 (en)

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DE102014107735.0A DE102014107735B4 (en) 2014-06-02 2014-06-02 Wing with axial seal
EP15170069.7A EP2960511A3 (en) 2014-06-02 2015-06-01 Wing with axial sealing
US14/728,309 US20150345492A1 (en) 2014-06-02 2015-06-02 Vane with axial seal
CN201510296328.7A CN105317683A (en) 2014-06-02 2015-06-02 Wing with axial sealing

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DE102014107735A1 DE102014107735A1 (en) 2015-12-03
DE102014107735B4 true DE102014107735B4 (en) 2018-04-19

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EP (1) EP2960511A3 (en)
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DE (1) DE102014107735B4 (en)

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CN105317683A (en) 2016-02-10
EP2960511A2 (en) 2015-12-30
EP2960511A3 (en) 2016-02-17
DE102014107735A1 (en) 2015-12-03
US20150345492A1 (en) 2015-12-03

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