EP2441915A2 - Drehschieberpumpe - Google Patents

Drehschieberpumpe Download PDF

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Publication number
EP2441915A2
EP2441915A2 EP11008326A EP11008326A EP2441915A2 EP 2441915 A2 EP2441915 A2 EP 2441915A2 EP 11008326 A EP11008326 A EP 11008326A EP 11008326 A EP11008326 A EP 11008326A EP 2441915 A2 EP2441915 A2 EP 2441915A2
Authority
EP
European Patent Office
Prior art keywords
rotor
vanes
pump according
housing
wall surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP11008326A
Other languages
English (en)
French (fr)
Other versions
EP2441915A3 (de
EP2441915B1 (de
Inventor
Harald Nylænde
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.)
Dovrekraft As
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to PL11008326T priority Critical patent/PL2441915T3/pl
Publication of EP2441915A2 publication Critical patent/EP2441915A2/de
Publication of EP2441915A3 publication Critical patent/EP2441915A3/de
Application granted granted Critical
Publication of EP2441915B1 publication Critical patent/EP2441915B1/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
    • 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
    • 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
    • F01C21/0836—Vane tracking; control therefor by mechanical means comprising guiding means, e.g. cams, rollers
    • 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
    • F01C21/106—Stators; Members defining the outer boundaries of the working chamber with a radial surface, e.g. cam rings
    • 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
    • F04C2250/30—Geometry of the stator
    • F04C2250/301—Geometry of the stator compression chamber profile defined by a mathematical expression or by parameters

Definitions

  • WO90/14518A1 relates to a rotary machine with wings extending from a rotor.
  • the pump housing is shaped as half of a cylinder and the rotor is eccentric mounted with its axis outside the center of the pump housing.
  • a number of wings extend from an axle in the rotor towards the inner wall surface of the housing. To force the motion of the wings the wings have guiding pins fitting in guiding slots in the end wall of the rotary machine.
  • US2443994A cover a rotary machine as well, with wings with guiding pins.
  • the pump housing is circular and the rotor is mounted with its axis outside the center of the pump housing.
  • the wings extend from an axis core to the inner wall surface of the pump housing.
  • DE3108819A1 cover a similar rotary machine with a circular housing, wings which have a minor extend than the radius of the pump housing, forced motioned bye guiding grooves or magnetism.
  • GB262344A relates to a rotary machine comprising a circular or oval shaped pump housing and a number of wings forced motioned by a piston- or a spring arrangement in such way that continuous contact to the pump housing is achieved.
  • GB1013801A shows a rotary pump with at least two vanes with limited movement in an axle with a slot.
  • the pump is provided with a rotating sleeve with apertures.
  • US2495771A describes a rotary pump with vanes in pump housing, shaped out of roundness with four different radii.
  • the vanes are installed in a way that they may oscillate in a rotor which is eccentric placed.
  • the extent of the vanes is minor to the largest diameter inside the pump housing.
  • the radius of the rotor body is identical to one of the radii in one of the sectors of the pump housing and so forming a sealing zone with a rather long contact area.
  • the pump housing may have different embodiments with different unround forms, formed by two different radii, or by varying radii as in an Archimedes spiral.
  • the radius of the rotor body is identical to the radius of the housing and thus forms a sealing zone by the contact area between the rotor and the inner wall surface in the housing.
  • the rotary pumps described in US2352941A and GB534510 are improvements of the pump described in US2495771A in such a way that the transition points between two radii which could cause noise and uneven flow of the pumped matter are reduced, but the design with the contact between the rotor and the housing in a specific sector will still give the same risk as above.
  • the rotary machine described in WO97/04216A1 may cause undesired noise and abrasion in the rotary machine, and uneven flow of the pumped/driving matter.
  • the pressure rise at the discharge side of the pump will lead to a slight movement of the rotor and wear damages at diametrical opposite side of the pump housing will occur.
  • the rotor may be slowed down and heat will be generated, and in a worst case the rotor will stop completely.
  • the present invention is a pump with a rotor (10) comprising one or more vanes (12a, 12b, 7) arranged for running with edges (17a1, 17a2, 17b1, 17b2, 7)against a plain inner wall surface (2) in their full axial extent in a rotor housing (1) with a bottom wall (15) and a cap (16) and further arranged with an inlet (7) and an outlet (6), wherein the rotor (10) is arranged on an axle (9) mainly eccentrically placed related to the inner wall surface (2) of the rotor housing (1), wherein each vane (12a, 12b, ...) is arranged to run each in a corresponding diametrical slot (141, 142 ...) in the rotor (10),that each vane (12a, 12b, ...) extend from an end's edge (17a1, 17b1, ...) to the opposite end's edge (17a2, 17b2 ...) substantially across the whole inner diameter ( ⁇ ) of the rotor housing, between two opposite sides of the inner wall surface (2) for all rotation
  • An embodiment of the invention comprise a pump with a rotor (10) comprising one or more vanes (12a, 12b, ...) arranged for running with edges (17al, 17a2, 17b1, 17b2, 7)against a plain inner wall surface (2) in their full axial extent in a rotor housing, (1) with a bottom wall (15) and a cap (16) and further arranged with an inlet (7) and an outlet (6), wherein the rotor (10) is arranged on an axle (9) mainly eccentrically placed related to the inner wall surface (2) of the rotor housing (1), wherein the new and characteristic features are that each vane (12a, 12b, ...) is arranged to run each in a corresponding diametrical slot (141, 142 ...) in the rotor (10),that each vane (12a, 12b, ...) extend from an end's edge (17a1, 17b1, ...) to the opposite end's edge (17a2, 17b2 ...) substantially across the entire inner diameter ( ⁇ ) of the rotor housing, between two opposite
  • vanes there might be one, two or more vanes.
  • the vanes are preferably stiff plates.
  • An advantage with this design of a rotary pump is that the vanes, which are the pumping vanes, extend over approximately the entire diameter of the pump housing, regardless of the rotary position of the vanes.
  • the vanes provide for the necessary sealing to prevent backflow of the pumped medium, see Fig. 1 . Due to the design of the pump according to the invention one will have few movable parts, few components that may fail and low risk of wear.
  • a large diameter of the rotor combined with a vane that extend over the entire diameter in the pump housing gives a large contact area between the rotor and the vane, in contrast to pumps wherein the vane only extend from a place between the rotor center and the outer diameter of the rotor, and to the inner surface of the pump housing as shown in e.g. WO9014518 and GB262344 .
  • the large contact area results in reduced local compressive force compared to prior art. Due to the fact that the vanes extend over the entire diameter of the pump housing, it is possible to use the pump without force motioning the vanes.
  • the diameter of the rotor is less than the cylinder diameter of the pump housing. The different is the length of the stroke with addition of a necessary allowance.
  • the bearing of the axle is a shaft bearing which form an asymmetric extension of the pump housing (1) and formed as one component.
  • the pump comprises in an embodiment mainly of five components, of which three are movable.
  • the maintenance will be very easy. It will be easy to access the components exposed to wear, such as vanes.
  • the rotor housing (1) is cylindrical and the one or more vanes (12a, 12b,...) are rectangular.
  • Such an embodiment of the housing is easy to mill and makes the assembling very easy.
  • the rotor housing is more or less drum shaped and that the vanes are formed to fit and fill the drum shape of the rotor housing.
  • the components of the pump may be manufactured of for instance metal or ceramic material depending of the range of use.
  • the cross section of the so formed cylindrical pump housing will not have a real mathematic center point.
  • the housing, the cylinder will in this embodiment be egg- or heart- shaped. At 0 and 180 degrees the transitions may be smoothened to prevent strokes to the vanes at those points.
  • the rate, Delta R is 1/10 mm per degree and R 0 is 50 mm. In another embodiment R 0 is 920 mm and the rate 80/180 mm. Please see the example in the below table. The radius and the gradient may be adjusted according to the use.
  • the cross section of the rotor housing does not have a real center. The geometry of the inner walls will be defined as e.g. described in claim 2. ⁇ rotor ⁇ housing Delta R 50 59 1/20 mm 100mm 118mm 1/10 mm per deg 920 1000 80/180 mm
  • the vanes (12a,12b,...) are provided with corresponding recesses (13a, 13b, ...) arranged for mutual translational motion within the slots (141, 142) of the rotor (10).
  • This allows the use of more vanes which extend over the entire pump housing diameter and are arranged in the rotor that are located outside the approximate center point of the center of the pump housing.
  • the cylindrical pump housing has no real axis of revolution but only an approximate circular form of the cross section.
  • the rotor has in an embodiment a minor radius to the smallest diameter of the pump housing. In such an embodiment the rotor will not form a sealing zone to the cylindrical inner wall in the pump housing.
  • the rotor is in this embodiment arranged with an allowance to the housing, see Fig.
  • a conduit internally in the slots in the rotor allows transport of fluid across the vanes so as for the vanes to slide easily and prevent mechanical locking or jamming by the liquid pressure when moving the vanes. This may be done by not letting the recesses tighten onto each other.
  • the inlet (7) is arranged radial. In another embodiment of the invention the inlet (7) is arranged parallel with the axle. In an embodiment of the invention the outlet (6) is radial. In another embodiment of the invention the outlet (6) is parallel with the axle.
  • the inlet and outlet may be arranged and vary depending on the desired pressure conditions and range of use. Outside the outlet (6) and inlet (7) there will be pipe fittings or connections to a pipe manifold according to the requirements. It is important that at least one of the vanes always work as a sealing between the inlet and the outlet as shown in Fig. 1 . Therefore, in a preferred embodiment there will be two or more vane plates.
  • the cap may have a hole near the center of the rotor so as for connecting two pumps to e.g. a combustion engine or other ranges of use.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
EP11008326.8A 2010-10-15 2011-10-14 Drehschieberpumpe Active EP2441915B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11008326T PL2441915T3 (pl) 2010-10-15 2011-10-14 Pompa łopatkowa

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO20101436A NO332797B1 (no) 2010-10-15 2010-10-15 Pumpe

Publications (3)

Publication Number Publication Date
EP2441915A2 true EP2441915A2 (de) 2012-04-18
EP2441915A3 EP2441915A3 (de) 2017-07-26
EP2441915B1 EP2441915B1 (de) 2019-06-12

Family

ID=45370368

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11008326.8A Active EP2441915B1 (de) 2010-10-15 2011-10-14 Drehschieberpumpe

Country Status (6)

Country Link
EP (1) EP2441915B1 (de)
DK (1) DK2441915T3 (de)
ES (1) ES2745454T3 (de)
HU (1) HUE045871T2 (de)
NO (1) NO332797B1 (de)
PL (1) PL2441915T3 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3514324A1 (de) * 2018-01-18 2019-07-24 Hamilton Sundstrand Corporation Nockenlaufbuchse für integrierten antriebsgenerator

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB262344A (en) 1926-06-26 1926-12-09 William Kingsland Improvements in rotary pumps or motors
GB534510A (en) 1939-03-08 1941-03-07 Thompson Prod Inc Improvements in or relating to pumps of the sliding vane type
US2352941A (en) 1939-03-08 1944-07-04 Curtis Pump Co Offset rotor vane pump
US2443994A (en) 1948-05-07 1948-06-22 Scognamillo Salvatore Rotary pump
US2495771A (en) 1945-10-15 1950-01-31 Richer Ella Diametrically cooperating vane pump
GB1013801A (en) 1960-12-17 1965-12-22 Werner Hubener Improvements in or relating to rotary pumps
DE3108819A1 (de) 1981-03-09 1982-11-25 Kommanditgesellschaft RMC Rotationsmaschinen GmbH + Co, 2000 Hamburg Verfahren zur ausbildung eines kompressionsraumes in einer rotationskolbenmaschine
WO1990014518A1 (en) 1989-05-23 1990-11-29 Angelo Vismara Hydraulic rotary pump-turbine as a torque converter
WO1997004216A1 (en) 1995-07-18 1997-02-06 Johan Tenfjord Energy transforming machine provided with rotary piston and radially reciprocating vanes

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE434452A (de) *
US1442198A (en) * 1914-06-24 1923-01-16 Arthur Kitson Rotary pump, engine, or meter
FR1383047A (fr) * 1963-11-05 1964-12-24 Perfectionnements apportés aux moteurs ou pompes à palette, notamment aux moteurs rotatifs à combustion interne
AU8101575A (en) * 1974-05-17 1976-11-11 Reynaud D A L M Vane type pump
JPS5838394A (ja) * 1981-08-31 1983-03-05 Toyoda Autom Loom Works Ltd ベ−ン圧縮機
US4958995A (en) * 1986-07-22 1990-09-25 Eagle Industry Co., Ltd. Vane pump with annular recesses to control vane extension

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB262344A (en) 1926-06-26 1926-12-09 William Kingsland Improvements in rotary pumps or motors
GB534510A (en) 1939-03-08 1941-03-07 Thompson Prod Inc Improvements in or relating to pumps of the sliding vane type
US2352941A (en) 1939-03-08 1944-07-04 Curtis Pump Co Offset rotor vane pump
US2495771A (en) 1945-10-15 1950-01-31 Richer Ella Diametrically cooperating vane pump
US2443994A (en) 1948-05-07 1948-06-22 Scognamillo Salvatore Rotary pump
GB1013801A (en) 1960-12-17 1965-12-22 Werner Hubener Improvements in or relating to rotary pumps
DE3108819A1 (de) 1981-03-09 1982-11-25 Kommanditgesellschaft RMC Rotationsmaschinen GmbH + Co, 2000 Hamburg Verfahren zur ausbildung eines kompressionsraumes in einer rotationskolbenmaschine
WO1990014518A1 (en) 1989-05-23 1990-11-29 Angelo Vismara Hydraulic rotary pump-turbine as a torque converter
WO1997004216A1 (en) 1995-07-18 1997-02-06 Johan Tenfjord Energy transforming machine provided with rotary piston and radially reciprocating vanes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3514324A1 (de) * 2018-01-18 2019-07-24 Hamilton Sundstrand Corporation Nockenlaufbuchse für integrierten antriebsgenerator
US10907718B2 (en) 2018-01-18 2021-02-02 Hamilton Sundstrand Corporation Cam liner for integrated drive generator

Also Published As

Publication number Publication date
NO332797B1 (no) 2013-01-14
DK2441915T3 (da) 2019-09-23
PL2441915T3 (pl) 2020-03-31
EP2441915A3 (de) 2017-07-26
ES2745454T3 (es) 2020-03-02
HUE045871T2 (hu) 2020-01-28
EP2441915B1 (de) 2019-06-12
NO20101436A1 (no) 2012-04-16

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