EP0113278B1 - Dispositif à pompe immergée, notamment pour l'alimentation d'un brûleur en combustible - Google Patents

Dispositif à pompe immergée, notamment pour l'alimentation d'un brûleur en combustible Download PDF

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Publication number
EP0113278B1
EP0113278B1 EP83402462A EP83402462A EP0113278B1 EP 0113278 B1 EP0113278 B1 EP 0113278B1 EP 83402462 A EP83402462 A EP 83402462A EP 83402462 A EP83402462 A EP 83402462A EP 0113278 B1 EP0113278 B1 EP 0113278B1
Authority
EP
European Patent Office
Prior art keywords
shaft
supply
supply chamber
chamber
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
Application number
EP83402462A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0113278A1 (fr
Inventor
Philippe Jean Maurice Lecerf
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.)
INTERNATIONALE DE CHAUFFAGE Cie
Original Assignee
Generale De Fonderie Francaise SA Ste
INTERNATIONALE DU CHAUFFAGE Cie
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 Generale De Fonderie Francaise SA Ste, INTERNATIONALE DU CHAUFFAGE Cie filed Critical Generale De Fonderie Francaise SA Ste
Priority to AT83402462T priority Critical patent/ATE22968T1/de
Publication of EP0113278A1 publication Critical patent/EP0113278A1/fr
Application granted granted Critical
Publication of EP0113278B1 publication Critical patent/EP0113278B1/fr
Expired legal-status Critical Current

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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
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/04—Piston machines or pumps characterised by having positively-driven valving in which the valving is performed by pistons and cylinders coacting to open and close intake or outlet ports
    • F04B7/06—Piston machines or pumps characterised by having positively-driven valving in which the valving is performed by pistons and cylinders coacting to open and close intake or outlet ports the pistons and cylinders being relatively reciprocated and rotated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/043—Arrangements for driving reciprocating piston-type pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K5/00—Feeding or distributing other fuel to combustion apparatus
    • F23K5/02—Liquid fuel
    • F23K5/14—Details thereof
    • F23K5/142—Fuel pumps

Definitions

  • the present invention relates to a device for supplying liquid to a receiving member, comprising a submerged pump and intended in particular but not exclusively for supplying a burner with liquid fuel.
  • the patent FR 2448 054 describes a pump in particular for liquid fuel comprising a blind body immobilized in rotation and mounted so as to be able to slide back and forth on a rotary shaft, for example directly on the shaft of an engine.
  • a cam mechanism arranged between the body and the shaft for example constituted by the machined end of the shaft, produces the alternating rectilinear movement of the body along the axis of the shaft and therefore the cyclic variation of the volume of a pumping chamber defined by the end of the shaft and the interior of the blind body.
  • the object of the invention is in particular to remedy the cited drawbacks of the pumps of the type described and to create a liquid supply device which is reliable, inexpensive and compact.
  • the device according to the invention comprises a supply chamber, connected to the suction orifice and in which is housed the blind body, while a seal is mounted between the rotary shaft and a fixed wall of the supply chamber, and that the discharge orifice is connected to a tube terminating outside of the latter.
  • the life of the seal is thus improved by the fact that it is only subjected to the low load of the liquid in the supply chamber and that it does not have to bear stresses due to the alternating sliding of the body. on the rotating shaft.
  • the immersion of the vibrating body in the chamber allows wide manufacturing tolerances, in particular for the body since the leakage of the liquid between the body and the shaft is no longer a nuisance and contributes to the lubrication of the body-shaft bearing.
  • the supply chamber is mounted on the drive shaft in the form of a supply sub-assembly including the blind body and a degassing device.
  • the latter may advantageously comprise a rigid or flexible tube connecting the suction orifice of the blind body to the interior space of the chamber, the tube having a liquid drawing orifice and at an upper level an opening allowing progressive elimination air bubbles reaching the room.
  • This degassing device constitutes another important aspect of the present invention.
  • the chamber may be formed in one piece with a flange or with the motor or fan casing. It can of course be engaged with the seal on the motor shaft to be removably attached to the flange or to the casing. In both cases, it is desirable to provide access to the interior of the room.
  • the pump body can be immobilized in rotation by the discharge hose connecting the body discharge port to a chamber outlet connection and / or by a suction hose connecting the body suction port to the 'interior space of the room; the suction hose can of course constitute the degassing tube envisaged previously.
  • the design of the supply device is thus simplified.
  • FIG. 1 shows a burner 10 comprising a device 11 for supplying liquid fuel, a fan 12 of a type known to outer casing 13, a combustion head 14 and regulating and control members 15.
  • An electric motor of axis X-X of which only the shaft 16 and its ball bearing 13A has been indicated makes it possible to actuate the fan 12 and a pump 17 of the supply device 11.
  • the device 11 has a fuel chamber 18 and a blind body 19 slidably mounted on the end of the shaft 16.
  • the body 19 can be immobilized in rotation by cooperation of a tenon and a complementary mortise provided on the body and on a fixed part of the chamber 18; however, it is preferably prevented from rotating by connection hoses and by a return spring which will be described later.
  • the body 19 can be moved on the shaft 16 in an alternating translation of small amplitude by means of a cam mechanism constituted either by a cam flange formed on the shaft, or by a cam machined at the end of the shaft and cooperating with a eccentric stop provided inside the body.
  • a cam mechanism constituted either by a cam flange formed on the shaft, or by a cam machined at the end of the shaft and cooperating with a eccentric stop provided inside the body.
  • FIG. 4 a stop machined at the end of the shaft 16A, which cooperates with an inclined cam surface 19A provided internally at the bottom of the blind body 19, during its molding. made of synthetic material.
  • the cam mechanism When the drive shaft 16 rotates, the cam mechanism produces the comings and goings of the blind body 19 on the shaft in cooperation with a weak return spring 20 interposed between the body and a fixed wall 18A of the supply chamber.
  • the blind body 19 has (FIG. 3) a suction orifice 21 and a discharge orifice 22 which are substantially opposite; these orifices are connected alternately during rotation of the shaft with a lumen 23 of the shaft itself open on a pumping cavity 24 of cyclically variable volume, formed between the body and the shaft.
  • the blind body 19 is housed in the supply chamber 18 and its suction orifice 21 communicates with the volume of liquid contained in the chamber under normal pumping conditions while a seal ( O-ring 25 and / or lip seal 25A) is disposed between the rotary shaft 16 and a fixed wall 26 of the supply chamber.
  • a seal O-ring 25 and / or lip seal 25A
  • the seal 25 only supports the stresses due to the rotation of the shaft, as well as the low pressure of the liquid in the chamber.
  • the body 19 can now be manufactured with a wide tolerance since the liquid leaks return to the chamber while lubricating the bearing; finally, the spring 20 can be lightened as a result of the reduction in the weight of the body freed from the point, the stop 17A (FIG. 4) of the spring therefore also being able to be lightened.
  • a flexible tube 27 located in the chamber 18 is connected to the suction nozzle 21. It has an opening 29 at its free end.
  • a calibrated orifice 28 is provided in the tube 27 or better in the suction nozzle 21.
  • the normal level of liquid in the chamber is designated by h l .
  • the opening 29 is located higher than the calibrated orifice 28, and higher than the level h l .
  • Chamber 18 has an inlet connection 30, fitted with a filter 30A. whose opening is above the level of the pump.
  • An at least partly flexible tube 31 is connected on the one hand to the discharge orifice 22 of the blind body, on the other hand to an outlet connector 32 of the chamber 18.
  • the hoses 27, 31 help to immobilize the blind body 19 in rotation while allowing its alternating sliding of small amplitude on the shaft.
  • the hoses are for example in abutment against the inner wall of the supply chamber. It should be noted that the rupture of one of the hoses does not have the effect of an external leakage of the liquid.
  • this degassing device can be used with a pump 17 different from that described above, submerged or not.
  • the blind body 19 constitutes (where appropriate with the flexible 27 and the flexible 31) an interchangeable component allowing a change of flow. Indeed, for to change the flow rate, it will suffice to replace a component provided with a body 19 with cavity 24 and with calibrated orifice 28 by a component with cavity, inclined cam surface and calibrated orifice dimensioned differently. This can be done easily after opening the cover 18A of the chamber 18.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Reciprocating Pumps (AREA)
EP83402462A 1982-12-30 1983-12-19 Dispositif à pompe immergée, notamment pour l'alimentation d'un brûleur en combustible Expired EP0113278B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83402462T ATE22968T1 (de) 1982-12-30 1983-12-19 Fluessigkeitspumpenvorrichtung, insbesondere fuer die brennstoffzufuhr eines brenners.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8222104A FR2538861A1 (fr) 1982-12-30 1982-12-30 Dispositif a pompe immergee, notamment pour l'alimentation d'un bruleur en combustible
FR8222104 1982-12-30

Publications (2)

Publication Number Publication Date
EP0113278A1 EP0113278A1 (fr) 1984-07-11
EP0113278B1 true EP0113278B1 (fr) 1986-10-15

Family

ID=9280710

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83402462A Expired EP0113278B1 (fr) 1982-12-30 1983-12-19 Dispositif à pompe immergée, notamment pour l'alimentation d'un brûleur en combustible

Country Status (4)

Country Link
EP (1) EP0113278B1 (enrdf_load_stackoverflow)
AT (1) ATE22968T1 (enrdf_load_stackoverflow)
DE (1) DE3367000D1 (enrdf_load_stackoverflow)
FR (1) FR2538861A1 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2616209B1 (fr) * 1987-06-05 1990-12-14 Cie Int Du Chauffage Dispositif d'alimentation en liquide, notamment pour l'alimentation en combustible d'un bruleur, et bruleur a combustible liquide associe audit dispositif

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE559650C (de) * 1932-09-22 Charles Perdrisat Speisevorrichtung fuer Fluessigkeitsbrenner
US1577622A (en) * 1924-01-02 1926-03-23 Wayne Tank & Pump Company Liquid-fuel burner
FR1047406A (fr) * 1951-12-29 1953-12-14 Lorraine De Travaux Ferroviair Pompe perfectionnée
US2869467A (en) * 1956-05-15 1959-01-20 Alexander S Limpert Liquid proportioning pump
US3521978A (en) * 1967-09-06 1970-07-28 Danfoss As Electric motor,pump and blower oil burner unit
FR2448054A1 (fr) * 1979-02-05 1980-08-29 Fonderie Soc Gen De Dispositif d'alimentation d'un bruleur en combustible liquide

Also Published As

Publication number Publication date
FR2538861A1 (fr) 1984-07-06
DE3367000D1 (en) 1986-11-20
FR2538861B1 (enrdf_load_stackoverflow) 1985-05-24
ATE22968T1 (de) 1986-11-15
EP0113278A1 (fr) 1984-07-11

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