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WO2013018102A2 - Ensemble de pales pourvu d'un élément ressort intégré - Google Patents

Ensemble de pales pourvu d'un élément ressort intégré Download PDF

Info

Publication number
WO2013018102A2
WO2013018102A2 PCT/IN2012/000513 IN2012000513W WO2013018102A2 WO 2013018102 A2 WO2013018102 A2 WO 2013018102A2 IN 2012000513 W IN2012000513 W IN 2012000513W WO 2013018102 A2 WO2013018102 A2 WO 2013018102A2
Authority
WO
WIPO (PCT)
Prior art keywords
vane assembly
blade
rotor
vane
assembly
Prior art date
Application number
PCT/IN2012/000513
Other languages
English (en)
Other versions
WO2013018102A3 (fr
Inventor
Noack BJOERN
Original Assignee
Bosch Limited
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 Bosch Limited, Robert Bosch Gmbh filed Critical Bosch Limited
Publication of WO2013018102A2 publication Critical patent/WO2013018102A2/fr
Publication of WO2013018102A3 publication Critical patent/WO2013018102A3/fr

Links

Classifications

    • 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
    • F01C21/08—Rotary pistons
    • F01C21/0809—Construction of vanes or vane holders
    • F01C21/0818—Vane tracking; control therefor
    • F01C21/0827—Vane tracking; control therefor by mechanical means
    • F01C21/0845—Vane tracking; control therefor by mechanical means comprising elastic means, e.g. springs
    • 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
    • F01C21/08—Rotary pistons
    • F01C21/0809—Construction of vanes or vane holders
    • F01C21/0881—Construction of vanes or vane holders the vanes consisting of two or more parts
    • 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
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-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
    • F04C2/34—Rotary-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
    • F04C2/344—Rotary-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
    • F04C2/3441—Rotary-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 the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • F04C2/3442—Rotary-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 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 working space, being surfaces of revolution
    • 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

Definitions

  • This invention relates to a vane assembly.
  • this invention relates to a vane assembly with an integrated spring element.
  • US patent number 4659298 discloses a vane actuating assembly for radially slidable vanes. Vanes are slidingly positioned in slots. A hollow sleeve with a plunger is reciprocally disposed in the slots. A spring is positioned in the hollow sleeve and biases the plunger. The biased plunger is in contact with the inner surface of the vanes.
  • Figure 1 illustrates a vane assembly for a rotor in accordance with this invention
  • Figure 2 illustrates one application of the vane assembly for a rotor in accordance with this invention.
  • FIG. 1 illustrates a vane assembly for a rotor in accordance with this invention.
  • the vane assembly 10 is located along the diameter of the rotor 12.
  • the vane assembly 10 comprises at least a first blade 14a, a second blade 14b and a flexible component 14c.
  • the flexible component 14c is located in between the first blade 14a and second blade 14b and is integrated with the first blade 14a and second blade 14b.
  • - Positive displacement pump is one of the many difference types of pumps known in the art. Positive displacement pumps may be further classified based on the type of internal drive mechanism that they use. Our focus will be rotary positive displacement pumps which have a eccentrically located rotor inside the stator.
  • Further static or sliding vanes are provided in the eccentric rotor such that they extend from said radially from the rotor.
  • the radially extending vanes make contact with the inner surface of the stator along which the vanes move in transporting liquids through the pump.
  • a centrifugal force acts outwardly on the vanes as the rotor rotates.
  • the vanes will lift from the inner surface, and thus fluid will slip by the vanes. The result is a decrease in pumping efficiency.
  • One method of placing additional outwardly acting forces on the vanes in addition to the centrifugal force is done by drilling holes are through the rotor interconnecting opposite pairs of vanes.
  • a solid pin is slidingly positioned in the hole in between the two vanes such that as one vane moves inwardly, the opposite vane is forced outwardly.
  • the dimension across the drilled hole may not be constant and allows no compensation for wear on the outer edges of the vanes.
  • the force of impact of the pin on the vanes can be quite high, quickly resulting in damage to the vanes.
  • the use of a solid pin makes the assembly heavy, further additional effort is required while assembling the components of the assembly. Also the wear and tear on the inner surfaces of the vanes causes in reduction of pumping efficiency of the pump.
  • the vane assembly 10 in accordance with this invention provides a one piece integrated vane assembly 10 for a rotor 12.
  • the flexible component 14c which is integrated in between the first blade 14a and second blade 14b provides a functionality which is similar to a compression spring.
  • the flexible component 14c pushes the two blades 14a and 14b outwards in a manner such that the blades 14a and 14b project out of the rotor.
  • the vane assembly 10 is such that the first blade 14a, second blade 14b and the flexible component 14c are made of a polymeric material. Another embodiment envisaged is that the first blade 14a and second blade 14b are made from one polymeric material and the flexible component 14c is made from another polymeric material.
  • the polymeric material from which the vane assembly is made is able to withstand the stress that is incident on the blades at the point of contact with the stator.
  • FIG. 2 illustrates one such application.
  • This application is related to a pump (shown in the figure) comprising a stator 16 and a rotor 12.
  • the rotor 12 with the vane assembly 10 is located eccentrically in a stator 16.
  • the blades 14a and 14b always maintain contact with at least a portion of the stator 16.
  • the vane assembly which is line with the vertical axis of the rotor also moves in the anticlockwise direction.
  • the flexible component 14c gradually comes back to its normal expanded state.
  • the invention as claimed in the independent claim of the specification has the following advantages.
  • the vane assembly is one integrated assembly with two blades and a flexible component in between the two blades.
  • the integrated assembly reduces the time required to manufacture the vane assembly. Further the cost of manufacturing of vane assembly is less as compared to conventional vane assemblies.
  • As the vane assembly is a single integrated assembly without any moving parts, there is no possibility of any damage to the components which is a problem in conventional vane assemblies.
  • vane assembly 10 Another advantage of the vane assembly 10 is that since it is made from a polymeric material the cost of manufacturing is comparatively less as compared to conventional.
  • vane assembly 10 of this invention has over conventional vane assemblies is that due to nature of the flexible component provided in the vane assembly it is able to provide the required working at lower speeds of rotation as well as at higher speeds of rotation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention porte sur un ensemble de pales d'un rotor. L'ensemble de pales est placé le long du diamètre du rotor. L'ensemble de pales comprend au moins une première pale, une seconde pale et un composant flexible. Le composant flexible est intégré entre la première et la seconde pale. L'ensemble de pales est conçu dans des matériaux polymères.
PCT/IN2012/000513 2011-07-29 2012-07-23 Ensemble de pales pourvu d'un élément ressort intégré WO2013018102A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN2610/CHE/2011 2011-07-29
IN2610CH2011 2011-07-29

Publications (2)

Publication Number Publication Date
WO2013018102A2 true WO2013018102A2 (fr) 2013-02-07
WO2013018102A3 WO2013018102A3 (fr) 2014-01-23

Family

ID=46763150

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2012/000513 WO2013018102A2 (fr) 2011-07-29 2012-07-23 Ensemble de pales pourvu d'un élément ressort intégré

Country Status (1)

Country Link
WO (1) WO2013018102A2 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4659298A (en) 1985-05-14 1987-04-21 Corken International Corporation Pump with vane actuating system

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB594441A (en) * 1945-06-25 1947-11-11 Thomas Lionel Hicks Improvements in rotary compressors
GB605740A (en) * 1946-12-20 1948-07-29 Derek Eyre Kirkland Improvements in or relating to sliding-vane rotary pumps
US2922376A (en) * 1956-09-07 1960-01-26 Tokheim Corp Variable capacity pump
IT1229927B (it) * 1988-10-14 1991-09-16 Cipelletti Alberto Cae Pompa a palette.
DE102008019440A1 (de) * 2008-04-17 2009-10-22 FRÖTEK Kunststofftechnik GmbH Flügel einer Flügelzellenpumpe oder eines Flügelzellenkompressors
US20100150766A1 (en) * 2008-12-16 2010-06-17 Flsmidth A/S Rotary sliding vane compressor and blade therefor
DE102009001152A1 (de) * 2009-02-25 2010-08-26 Robert Bosch Gmbh Drehschieberpumpe

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4659298A (en) 1985-05-14 1987-04-21 Corken International Corporation Pump with vane actuating system

Also Published As

Publication number Publication date
WO2013018102A3 (fr) 2014-01-23

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