[go: up one dir, main page]

EP0040161B1 - Pompe à pistons alternatifs à barillet fixe et plateau tournant - Google Patents

Pompe à pistons alternatifs à barillet fixe et plateau tournant Download PDF

Info

Publication number
EP0040161B1
EP0040161B1 EP81400765A EP81400765A EP0040161B1 EP 0040161 B1 EP0040161 B1 EP 0040161B1 EP 81400765 A EP81400765 A EP 81400765A EP 81400765 A EP81400765 A EP 81400765A EP 0040161 B1 EP0040161 B1 EP 0040161B1
Authority
EP
European Patent Office
Prior art keywords
plate
axis
pistons
cylinder
projection
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
Application number
EP81400765A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0040161A1 (fr
Inventor
François Couillard
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.)
Individual
Original Assignee
Individual
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
Priority claimed from FR8010916A external-priority patent/FR2484555B1/fr
Priority claimed from FR8106018A external-priority patent/FR2502702B1/fr
Application filed by Individual filed Critical Individual
Priority to AT81400765T priority Critical patent/ATE10301T1/de
Publication of EP0040161A1 publication Critical patent/EP0040161A1/fr
Application granted granted Critical
Publication of EP0040161B1 publication Critical patent/EP0040161B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/26—Control
    • F04B1/28—Control of machines or pumps with stationary cylinders
    • F04B1/29—Control of machines or pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
    • F04B1/295—Control of machines or pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block by changing the inclination of the swash plate

Definitions

  • the plate is tiltable about an axis orthogonal to said axis of revolution carried laterally by a support for driving the plate in rotation.
  • the invention relates to this type of pump and relates to an improvement in construction to meet a particular requirement imposed by the use of these pumps in the field of very precise metering at relatively low flow rate less than the deciliter and which can reach a few microliters per minute. This requirement is particularly severe in liquid chromatography. It is for reasons of precision to keep each piston of the pump in an invariable delivery neutral position regardless of the displacement, so the stroke of the pistons.
  • the invention relates to a reciprocating piston pump of the fixed barrel type comprising a plurality of parallel pistons whose axes are regularly distributed on a cylinder and which are held in abutment by their end external to the barrel on a plate capable of to be inclined around a shaft perpendicular to the axis of the aforesaid cylinder.
  • the plate can rotate around the axis of said cylinder and the surface portion of the plate on which said ends of the pistons rest has in a plane passing through the axis of said cylinder and perpendicular to said shaft.
  • articulation of the plate a circular projection centered on the axis of the articulation shaft and forming a stop for said ends of the pistons.
  • Said projection can be toroidal and defined by the surface generated by the above-mentioned circular projection during a movement of revolution around the axis of said cylinder, and the contact between the latter and the piston ends can be practically punctual.
  • the inclination of the plate can be adjusted by means of a movable fulcrum along the axis of said cylinder which cooperates with a face of the plate opposite to that provided with the above-mentioned surface portion, while the contact part of this face with said point has a cam profile allowing a variation of the piston stroke proportional to the displacement of the point along said axis.
  • It can also be adjusted by means of a circular track centered on the axis of revolution and cooperating with a part of the plate diametrically opposite to said articulation axis.
  • a fixed pump body 1 with a longitudinal axis 1a around which are regularly distributed three, four or more, pistons 2 whose axes 2a are located on a cylinder with axis 1a.
  • pistons 2 are slidably mounted in the body or barrel 1 and their end 2b cooperates with a chamber 3 to vary the volume.
  • springs 2c are kept applied by springs 2c on a plate 4 which is articulated at 5 around a shaft orthogonal to the axis 1a and carried by a rotating support 10 around the axis 1a.
  • a member 6 - for example a micrometric threaded rod - serves as an adjustable stop for the plate 4 and its position along the axis 1a determines the inclination of the plate and thereby the stroke of the pistons maneuvered by the inclined plate and the displacement of the pump.
  • FIG. 3 One of the solutions to this problem offered by the invention is illustrated in FIG. 3 on which we find some of the elements already described with the same references.
  • the upper face 4a of the plate has a surface portion 7 on which the pistons 2 bear.
  • This surface portion 7 is such that, in a plane containing the axis 1 a and perpendicular to the axis 5 - that is to say the plane of the figure -, it has a circular trace 7a constituted by an arc of a circle centered on the axis 5.
  • the place of point 8 during the rotation of the plate is a circle contained in a plane perpendicular to the axis 1 which defines the neutral point of delivery of all the pistons.
  • the surface 7 does not have an ascending slope from the face 4a of the plate along the contact line of the pistons when this plate is perpendicular to the axis 1a.
  • a preferred form of the surface 7 will be constituted by the surface generated by the rotation of the trace 7a around the axis 1a.
  • the surface 7 will then be toroidal (as in the figure).
  • the pistons 2 have an end surface 2d on the side of the convex plate (here spherical) such that the contact of these pistons with the surface 7 is practically punctual.
  • This surface 2d can affect the profile of a cam in the plane of the figure - and more generally in each radial plane passing through the axes 2a - which would, taking into account the geometry of the movable elements relative to each other, make the variation of the piston stroke by inclination of the proportional plate - linear function - of the movement of the member 6. In this case, care will be taken to stop the pistons rotating around their axis relative to the pump body.
  • Such a profile of the surfaces 2d brings an improvement to the pump affecting in a high order the precision of the adjustment, taking into account that the corrections which it brings are minimal.
  • the contact end of the member 6 will be able to be made in adequate cam profile of revolution and that the cutting of the face 4b will be carried out beyond the shaft 5 relative to the axis. 1 a if the platform is tilted in direction A.
  • a part 4c of the plate 4 cooperating with a circular track 9 extending a plane perpendicular to the axis 1 a and adjustable along this axis.
  • These two means replace the central member 6 to adjust the inclination of the plate 4.
  • the bearing surface of said part 4c can also be cut on the cam surface to make the relationship between the movement linear. of track 9 and the variation of the stroke of the subsequent pistons.
  • the position of the axis 5a of the shaft 5 can be indifferent at least in theory (apart from its orientation) and is shown arbitrarily in the figure. It may however be advantageous to provide it directly above the axes 2a.
  • the arrangement se-Ion the invention allows to choose the best technological possibilities of the position of this axis.
  • the invention finds an interesting application in the field of precision pumps.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
EP81400765A 1980-05-14 1981-05-13 Pompe à pistons alternatifs à barillet fixe et plateau tournant Expired EP0040161B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81400765T ATE10301T1 (de) 1980-05-14 1981-05-13 Steuerbare axialkolbenpumpe mit feststehendem zylinderblock.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8010916 1980-05-14
FR8010916A FR2484555B1 (fr) 1980-05-14 1980-05-14 Dispositif de pompe pour liquide
FR8106018A FR2502702B1 (fr) 1981-03-25 1981-03-25 Pompe a pistons alternatifs a barillet fixe et plateau tournant
FR8106018 1981-03-25

Publications (2)

Publication Number Publication Date
EP0040161A1 EP0040161A1 (fr) 1981-11-18
EP0040161B1 true EP0040161B1 (fr) 1984-11-14

Family

ID=26221781

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81400765A Expired EP0040161B1 (fr) 1980-05-14 1981-05-13 Pompe à pistons alternatifs à barillet fixe et plateau tournant

Country Status (3)

Country Link
EP (1) EP0040161B1 (it)
DE (1) DE3167159D1 (it)
IT (1) IT1142504B (it)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10307507B4 (de) * 2002-02-21 2013-09-12 Institut Français du Pétrole Verfahren und System zum Feindosieren von Fluiden, die in einer Pumpeinrichtung injiziert werden

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2726332B1 (fr) 1994-10-26 1997-01-24 Francois Couillard Systeme de pompage a pistons delivrant des fluides avec un debit sensiblement constant
CN107939626B (zh) * 2017-11-13 2019-06-11 山东科技大学 高精度医用溶液加压装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2349310A (en) * 1942-05-23 1944-05-23 Wagner Electric Corp Pump and control means therefor
US2964234A (en) * 1954-05-13 1960-12-13 Houdaille Industries Inc Constant clearance volume compressor
FR1221317A (fr) * 1958-03-15 1960-06-01 Pompe à débit automatiquement variable
FR1473091A (fr) * 1966-01-06 1967-03-17 Pompe hydraulique à débit variable
US3663226A (en) * 1969-04-22 1972-05-16 Arnold E Biermann Variable piston-stroke mechanisms
CH510216A (de) * 1969-05-10 1971-07-15 Bosch Gmbh Robert Hydrostatisches Aggregat
US3861829A (en) * 1973-04-04 1975-01-21 Borg Warner Variable capacity wobble plate compressor
NL7900076A (nl) * 1979-01-05 1980-07-08 Philips Nv Drijfwerk voor een machine met heen- en weergaande zuigers met variabele slag.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10307507B4 (de) * 2002-02-21 2013-09-12 Institut Français du Pétrole Verfahren und System zum Feindosieren von Fluiden, die in einer Pumpeinrichtung injiziert werden

Also Published As

Publication number Publication date
IT1142504B (it) 1986-10-08
DE3167159D1 (en) 1984-12-20
IT8148454A0 (it) 1981-05-13
EP0040161A1 (fr) 1981-11-18

Similar Documents

Publication Publication Date Title
EP0810944B1 (fr) Axe de blocage rapide destine a etre utilise sur un cycle
EP1047892A1 (fr) Vanne de reglage de debit
CA2042567C (fr) Dispositif de compression, en particulier pour le remplissage sous pression d'un reservoir
EP0060822A1 (fr) Moteur à mouvement linéaire et plateau oscillant pour un tel moteur
CA2470089C (fr) Dispositif de guidage d'une aube a angle de calage variable
EP0040161B1 (fr) Pompe à pistons alternatifs à barillet fixe et plateau tournant
EP1841640B1 (fr) Perfectionnement d'un dispositif a angle de chasse reglable d'une motocyclette
FR2690483A1 (fr) Pompe à pistons radiaux, notamment pompe de carburant pour moteur à combustion interne.
EP1436509A1 (fr) Pompe a palettes a cylindree variable
FR2507732A1 (fr) Perfectionnements apportes aux plongeurs pour reducteurs de pression de fluide, reducteurs et distributeurs equipes de tels plongeurs
FR2706033A1 (fr) Chambre cylindrique de compteur de liquide à piston oscillant.
EP0052387B1 (fr) Moteur comportant au moins un piston à mouvement de translation linéaire et plateau oscillant destiné à un tel moteur
EP0785332B1 (fr) Disposif de positionnement angulaire d'une masse par rapport à un axe horizontal de support et appareil d'éclairage équipé d'un tel dispositif
FR2502702A1 (fr) Pompe a pistons alternatifs a barillet fixe et plateau tournant
EP0283380A2 (fr) Dispositif fluidique à palette rotative sans joint d'étanchéité interne
FR2626939A1 (fr) Pompe a piston perfectionnee, en particulier pour chromatographie de hautes performances en phase liquide
FR2463862A1 (fr) Pompe a pistons et plateau a lumieres a auto-alignement destine a cette pompe
CH641528A5 (en) Hydraulic pump with a skew-plate which can revolve in both directions
EP2422087B1 (fr) Pompe volumetrique comprenant un absorbeur de pression
EP0764795A1 (fr) Piston à clapet pour tube d'amortisseur hydraulique
FR2715444A1 (fr) Perfectionnement aux dispositifs à patins glissants de machine, notamment de pompes et moteurs hydrauliques.
BE1015545A3 (fr) Systeme de transformation d'energie a appareil volumetrique.
FR2532367A1 (fr) Pompes a pistons axiaux solidaires de patins glissants sur une surface inclinee
FR2716239A1 (fr) Pompe à cylindrée variable et à pistons et barillet.
FR2567590A1 (fr) Pompe doseuse a piston alternatif.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LI LU NL SE

17P Request for examination filed

Effective date: 19820423

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19841114

Ref country code: AT

Effective date: 19841114

REF Corresponds to:

Ref document number: 10301

Country of ref document: AT

Date of ref document: 19841115

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3167159

Country of ref document: DE

Date of ref document: 19841220

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19850531

Ref country code: LI

Effective date: 19850531

Ref country code: CH

Effective date: 19850531

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19850531

Year of fee payment: 5

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19860531

BERE Be: lapsed

Owner name: COUILLARD FRANCOIS

Effective date: 19860531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19861201

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19870130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19870203

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19881118