EP0570259B1 - Pompe péristaltique à support élastique extérieur au stator - Google Patents

Pompe péristaltique à support élastique extérieur au stator Download PDF

Info

Publication number
EP0570259B1
EP0570259B1 EP19930401160 EP93401160A EP0570259B1 EP 0570259 B1 EP0570259 B1 EP 0570259B1 EP 19930401160 EP19930401160 EP 19930401160 EP 93401160 A EP93401160 A EP 93401160A EP 0570259 B1 EP0570259 B1 EP 0570259B1
Authority
EP
European Patent Office
Prior art keywords
peristaltic pump
output shaft
satellite
rotor
casing
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 - Lifetime
Application number
EP19930401160
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0570259A1 (fr
Inventor
Jean-Pierre Debourg
Denis Daulasim
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.)
SEB SA
Original Assignee
SEB SA
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 SEB SA filed Critical SEB SA
Publication of EP0570259A1 publication Critical patent/EP0570259A1/fr
Application granted granted Critical
Publication of EP0570259B1 publication Critical patent/EP0570259B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
    • F04B43/1253—Machines, pumps, or pumping installations having flexible working members having peristaltic action by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing
    • F04B43/1284—Means for pushing the backing-plate against the tubular flexible member
    • 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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
    • F04B43/1238—Machines, pumps, or pumping installations having flexible working members having peristaltic action using only one roller as the squeezing element, the roller moving on an arc of a circle during squeezing

Definitions

  • the invention relates to a peristaltic pump with elastic support outside the stator.
  • peristaltic pumping is based on the propagation of the pinch of a tube filled with a fluid.
  • the fluid downstream of the pinch is expelled in the direction of flow, while the upstream tube decompressing creates a vacuum which sucks fluid into a reservoir located even further upstream.
  • peristaltic pumps are known in which a rotor applies rollers to a pipe which is crushed on the inner periphery of a cylindrical stator, thus generating the phenomenon described above.
  • the difficulty in producing this type of pump stems from the need to ensure that the tube is crushed in order to generate fluid pressure at the outlet without damaging the pipe.
  • the object of the present invention is to provide a miniature peristaltic pump whose elastic compensating system is external to the stator.
  • a peristaltic pump comprising an electric motor having a bearing and an output shaft in rotation about an axis of rotation; a pump body fixedly mounted on the bearing; a cylindrical housing acting as an axis of symmetry stator parallel to the output shaft; a rotor mounted fixed on and driven in rotation by the output shaft inside the cylindrical housing, a satellite of the rotor driven in rotation inside the housing a flexible tube lining the internal side wall of the housing and compressed between said satellite and side wall; the distance between the axis of rotation and the distal end of the satellite rotor arrangement added to the thickness of the compressed tube is greater than the radius of the housing cylindrical, the cylindrical housing being resiliently mounted on the pump body by means of external elastic elements.
  • the peristaltic pump comprises an electric motor 1, preferably, but not exclusively, of the asynchronous ring type, having a bearing 2 and an output shaft 4a in rotation about an axis of rotation 4b.
  • the bearing 2 carries a pump body 3 fixedly mounted comprising a ring 13 centered on the axis 4b of the output shaft 4a and having two diametrically opposite bosses or supports 14 which allow it to be screwed onto the bearing 2 by means of screws 15.
  • On this crown 13 is elastically mounted a cylindrical housing 8 by means of flexible blades 12 regularly distributed.
  • the box of axis of symmetry 5 comprises a base 16 pierced with a circular opening 17 allowing the passage of the output shaft 4a, a side wall 18 and a cover 19 intended to cooperate with the open base of the box 16 and having a circular opening 20 opposite the opening 17 of the base 16 allowing the passage of the shaft 4a.
  • the openings 17 and 20 are such that they allow, using the flexible blades, a translational movement of the housing 8 in any radial direction, the axis of symmetry 5 of the housing 8 remaining parallel and offset with respect to the axis of rotation 4b of the output shaft.
  • the side wall 18 of the cylindrical housing 8 is lined with a tube 11 conveying the fluid to be pumped.
  • the exits of the tube 11 out of the housing can be done respectively by the base 16 and by the cover 19, as shown in FIGS. 5 and 6, but in the preferred embodiment (FIGS. 7,8) the exits are made by the side wall 18 of the housing 8, the crown 13 being partially interrupted to allow passage to the outlets (11a, 11b) of the pipe.
  • Fixed on the output shaft and inside the housing is a rotor 6 (figures 1,2) or 7 ( Figures 3,4) respectively driving a satellite 9 ( Figures 1,2) or 10 ( Figures 3,4) intended to crush the tube 11 against the side wall 18.
  • the rotor 6 is a notched main roller linked to the output shaft 4a and the satellite 9 is a notched secondary roller rolling around the main roller 6.
  • the rotor 7 is a crank pin connected to the output shaft 4a having a groove 7a and the satellite 10 is a roller cooperating with the groove 7a and driven by the crank pin.
  • the sum of the radius of the rotor 6 ( Figure 1) or the distance from the axis of rotation 4b to the groove 7a ( Figure 3), the diameter of the satellite 9 or 10 and the thickness of the compressed pipe 11 is greater as the radius of the inner wall 18, which causes the eccentricity of the housing 8 of axis of symmetry 5 relative to the axis of rotation 4b, the axis of symmetry 5 always remaining parallel to the axis 4b but offset from it in the direction of the satellite.
  • the compression force of the pipe 11 is obtained by the action of the flexible blades 12 urged by the eccentricity of the housing 8.
  • the operating mode of the pump thus described is as follows: the electric motor 1 drives the rotor 6 or 7 which itself drives the satellite 9 or 10 compressing the tube 11 against the side wall 18. The movement of the satellite therefore generates the propagation of this compression causing the peristaltic phenomenon described above.
  • satellite 9 or 10 arrives opposite the outputs of tube a cycle has been completed. That is to say that all the fluid inside the tube present in the case was pulsed towards the exit and the depression relative to the decompression of the tube upstream of the satellite sucked fluid inside the tube replacing the expelled fluid.
  • rotor-satellite assembly can be replaced by a single eccentric cylindrical roller linked to the output shaft.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
EP19930401160 1992-05-13 1993-05-05 Pompe péristaltique à support élastique extérieur au stator Expired - Lifetime EP0570259B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9205794A FR2691210A1 (fr) 1992-05-13 1992-05-13 Pompe péristaltique à support élastique extérieur au stator.
FR9205794 1992-05-13

Publications (2)

Publication Number Publication Date
EP0570259A1 EP0570259A1 (fr) 1993-11-18
EP0570259B1 true EP0570259B1 (fr) 1996-01-10

Family

ID=9429743

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930401160 Expired - Lifetime EP0570259B1 (fr) 1992-05-13 1993-05-05 Pompe péristaltique à support élastique extérieur au stator

Country Status (3)

Country Link
EP (1) EP0570259B1 (enrdf_load_stackoverflow)
DE (1) DE69301271T2 (enrdf_load_stackoverflow)
FR (1) FR2691210A1 (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2667388A1 (en) * 2006-10-23 2008-05-08 Sun Medical-Scientific (Shanghai) Co., Ltd. Intelligent remote-controlled portable intravenous injection and transfusion system
EP3842638B1 (en) 2012-11-14 2022-11-02 Kpr U.S., Llc Peristaltic pump cassette

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1129662A (fr) * 1955-08-02 1957-01-24 Perfectionnements aux pompes rotatives
GB1198770A (en) * 1968-12-31 1970-07-15 Ford Motor Co Windscreen Cleaning Systems
DE2153052A1 (de) * 1971-10-25 1973-05-03 Allen Longford & Associates Lt Schlauchpumpe
DE4031554A1 (de) * 1990-02-23 1991-08-29 Standard Elektrik Lorenz Ag Schlauchpumpe

Also Published As

Publication number Publication date
DE69301271D1 (de) 1996-02-22
EP0570259A1 (fr) 1993-11-18
DE69301271T2 (de) 1996-06-27
FR2691210B1 (enrdf_load_stackoverflow) 1994-07-13
FR2691210A1 (fr) 1993-11-19

Similar Documents

Publication Publication Date Title
EP0728948B1 (fr) Pompe à vide à spirales
CH514787A (fr) Machine volumétrique, notamment pompe à vide
EP0882892B1 (fr) Machine du type scroll
FR2636099A1 (fr) Compresseur de fluide, systeme de refrigeration et procede d'equilibrage axial de la pression d'un arbre d'entrainement de compresseur hermetique
FR2574870A1 (fr) Appareil de deplacement de fluide de type a spirale
EP1023538A1 (fr) Pompe a vide a spirales
FR3006387A1 (fr) Compresseur a spirale
FR2736399A1 (fr) Compresseur a volutes, muni d'un clapet de retenue d'aspiration
FR2762876A1 (fr) Compresseur notamment pour la climatisation d'un vehicule automobile
FR2476223A1 (fr) Motopompe rotative a carburant, a centrage automatique sur l'arbre de son moteur
FR2687434A1 (fr) Compresseur a haut rendement et a volume de reexpansion reduit.
FR2636100A1 (fr) Compresseur de fluide et systeme de refrigeration
EP0570259B1 (fr) Pompe péristaltique à support élastique extérieur au stator
FR2627238A1 (fr) Compresseur d'air ondulatoire
FR2532366A1 (fr) Pompes a pistons radiaux, notamment pour fluides hydrauliques
FR2784143A1 (fr) Pompe volumetrique a carburant a diminution du bruit par cavitation
FR2862354A1 (fr) Pompe a cylindree variable, en particulier pompe a palettes
FR2830056A1 (fr) Structure pour empecher la rotation d'un poussoir pour dispositif d'alimentation en carburant
FR2794189A1 (fr) Compresseur a volute
FR2831223A1 (fr) Frein anti-rotation inverse pour compresseur a spirales
FR2657122A1 (fr) Pompe a essence pour systemes d'injection de moteurs a explosion.
EP2393990B1 (fr) Dispositif vibreur a motorisation hydraulique pour machine de vibrocompactage
FR2509802A1 (fr) Pompes et moteurs
FR2510204A1 (fr) Pompe a entrainement magnetique, notamment pour carburants
FR2623254A1 (fr) Pompe multiple a transmission magnetique

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

17P Request for examination filed

Effective date: 19930510

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR IT

17Q First examination report despatched

Effective date: 19950426

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR IT

REF Corresponds to:

Ref document number: 69301271

Country of ref document: DE

Date of ref document: 19960222

ITF It: translation for a ep patent filed
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
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19970201

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

Ref country code: FR

Payment date: 19980327

Year of fee payment: 6

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: 20000131

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: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050505