EP3992425A1 - Modular pump - Google Patents

Modular pump Download PDF

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Publication number
EP3992425A1
EP3992425A1 EP21205209.6A EP21205209A EP3992425A1 EP 3992425 A1 EP3992425 A1 EP 3992425A1 EP 21205209 A EP21205209 A EP 21205209A EP 3992425 A1 EP3992425 A1 EP 3992425A1
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EP
European Patent Office
Prior art keywords
pump
module
suction
zone
fluid
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
EP21205209.6A
Other languages
German (de)
French (fr)
Other versions
EP3992425C0 (en
EP3992425B1 (en
Inventor
Jérôme Renard
Valentin FAUVIN
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.)
Suntec Industries France SA
Original Assignee
Suntec Industries France SA
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Publication date
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Publication of EP3992425A1 publication Critical patent/EP3992425A1/en
Application granted granted Critical
Publication of EP3992425C0 publication Critical patent/EP3992425C0/en
Publication of EP3992425B1 publication Critical patent/EP3992425B1/en
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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
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/101—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with a crescent-shaped filler element, located between the inner and outer intermeshing members
    • 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
    • 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
    • F04C2210/00—Fluid
    • F04C2210/20—Fluid liquid, i.e. incompressible
    • F04C2210/203—Fuel
    • 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
    • F04C2240/00—Components
    • F04C2240/70—Use of multiplicity of similar components; Modular construction

Definitions

  • the present invention relates to the general field of installations, in particular of the heating installation type (domestic, collective, industrial, mobile and on-board) and more particularly to volumetric pumps intended for said heating installations.
  • the heating installation type domestic, collective, industrial, mobile and on-board
  • volumetric pumps driven, conventionally by an electric motor, the pumps drawing said fuel oil from a storage tank and rejecting it under pressure direction of the nozzle associated with the boiler burner.
  • these pumps are associated with at least one solenoid valve allowing the fuel oil to pass or not and a pressure regulator making it possible to maintain a sufficient pressure of fuel oil to allow it to be sprayed at the level of the nozzle, the solenoid valve and the pressure regulator often being integrated into the body of said pumps.
  • each volumetric pump must be designed to adapt to the needs and configurations of the different manufacturers of domestic oil boilers. It is therefore necessary to manufacture as many pump models as there are boiler configurations, this representing the major drawback of these volumetric pumps. Indeed, the manufacturer of this type of pump must have a wide range and manage a large stock of pumps at a high cost price since they are made of materials resistant to high pressures such as steel or cast iron.
  • the object of the present invention is therefore to provide a modular pump that is inexpensive, compact, easy to manufacture, and can be easily adapted to the needs and configurations of the various manufacturers, in particular of domestic oil boilers.
  • the module comprises a return zone intended for the return of the excess fluid not used by said equipment from the volumetric pump and the pump body comprises a return pipe allowing the possible return of the excess fluid to the storage tank and being fluidly connected to the return zone of said module, when the latter is inserted into said housing
  • the module comprises a body in the overall shape of a cylinder, a ring integral with said body and receiving at least one volumetric pump, and a flange integral with said ring.
  • the volumetric pump is advantageously of the internal gear pump type and comprises a ring gear with internal teeth capable of pivoting inside said ring around the longitudinal axis of the body of the module, a pinion with eccentric external teeth and a crescent filling the internal space between the crown and the pinion, the latter being fixed to one of the ends of a shaft pivoting with respect to said body about an axis substantially parallel to the longitudinal axis of the latter, and being configured so that its free end is disposed outside said body on the side opposite the pump body, when said module is inserted into said pump body , and associated with a motor.
  • the suction zone of the module is constituted by at least one first radial groove arranged on the rear face of the flange so as to emerge outside the perimeter face of the said flange to allow routing of the fluid from the perimeter face to the suction of the volumetric pump.
  • the flange comprises on its front face a second radial groove from the center of the latter until it emerges outside the perimeter face of said flange, and a circular groove intersecting said second radial groove and being capable of receiving an O-ring.
  • the return zone of the module is then constituted by the zone located inside said circular groove, the second radial groove making it possible to make the connection between the two suction and return zones in the absence of the O-ring.
  • the module preferably comprises a plurality of fixing members capable of assembling the body, the ring and the flange together, each fixing member being a screw capable of being inserted into an orifice made in the flange then into an orifice made in the ring, and screwed into a thread made in the body, the head of said screw then coming to rest against the front face of said flange, and the bottom of the housing of the pump body advantageously comprises recesses each capable of receiving the head of one of the screws.
  • a modular pump 1 in accordance with the invention, for pressurizing a fluid intended in particular for equipment, not shown, and comprising a module 2 and a pump body 3, in which is at least partially inserted removably said module 2, the latter comprising a body 4 in the overall shape of a cylinder.
  • the pressurized fluid equipment is equipment of a heating installation of the domestic, collective, industrial, mobile or even on-board type, said equipment then being a nozzle receiving pressurized fuel , said nozzle being offset or fixed directly to the pump body 3.
  • cylinder is understood here to mean a volume formed by a straight line which moves parallel to itself while resting on a plane curve and not only a cylinder of revolution.
  • the positive-displacement pump 5 could obviously be of a completely different type such as, for example, a gerotor pump (that is to say an internal gear pump without separating crescent), vane pump or even axial or radial piston pump, without departing from the scope of the present invention.
  • a gerotor pump that is to say an internal gear pump without separating crescent
  • vane pump or even axial or radial piston pump, without departing from the scope of the present invention.
  • Said pinion 8 is also fixed to one of the ends of a shaft 10 pivoting with respect to the body 4 of the module 2 about an axis substantially parallel to the longitudinal axis of the latter.
  • This shaft 10 is configured so that its free end is disposed outside of said body 4 on the side opposite pump body 3, when module 2 is inserted into said pump body 3.
  • Said shaft 10 is arranged to be associated by its free end, in a conventional manner, to an advantageously electric motor, not shown, so as to drive said ring gear 6 in the same direction of rotation.
  • the seal between the shaft 10 and the body 4 of the module 2 is ensured, conventional manner, by a lip seal 11 located on the side of the free end of said shaft 10 (Cf. figure 2 ).
  • the seal between the shaft 10 and the body 4 of the module 2 may be ensured by other sealing means such as, for example, a mechanical seal, without departing from the scope of the present invention.
  • the flange 12 has on its rear face at least a first radial groove 13 constituting the suction zone of the module 2 and being arranged so as to emerge on the outside on the perimeter face 14 of said flange 12 to allow the routing of the fluid from the perimeter face 14 to the suction of the positive-displacement pump 5.
  • the suction zone may also comprise several first radial grooves 13, for example two as represented on the figure 8 .
  • front designates here an element or part of an element of the module 2 located on the side of the pump body 3, when the module 2 is partly inserted into the latter, and by “rear” an element or a part of element of module 2 located on the opposite side.
  • the flange 12 comprises at least one second radial groove 15 being provided on the front face of said flange 12 from the center of the latter until it emerges on the outside on the perimeter face 14 of said flange 12 (Cf. figures 6 and 7 ).
  • the flange 12 also has on its front face a circular groove 17 intersecting the second radial groove 15 capable of receiving an O-ring 18 so as to separate the two suction and return zones (Cf. figures 6 and 7 ) by bearing against the pump body 3, when the module 2 is partly inserted into the latter.
  • the return zone is then constituted by the zone located inside said circular groove 17 receiving said O-ring 18, the second radial groove 15 making it possible to make the connection between the two suction and return zones. .
  • Said O-ring 18 can easily be removed by dismantling the module 2 from the pump body 3 so as to be able to use the modular pump 1 on different types of installations.
  • the modular pump 1 can then equip a twin-tube installation, in which the fluid passing through the return zone goes directly outside of said module 2.
  • the modular pump 1 can then equip a single-tube installation, in which the fluid passing through the return zone returns directly to the suction zone.
  • the module 2 and the pump body 3 of said modular pump 1 may not include a return zone and a channeling zone respectively. back (described later), without departing from the scope of the present invention.
  • the module 2 further comprises a plurality of fixing members capable of assembling together the body 4, the ring 7 and the flange 12.
  • Each fixing member is advantageously a screw 19 capable of being inserted into an orifice 20 made in the flange 12 then into an orifice 21 made in ring 7, and screwed into a thread 22 made in body 4, the head of said screw 19 then coming to bear against the front face of said flange 12 (Cf. figure 2 and 7 ).
  • the module 2 comprises several screws 19, the latter preferably being of the cylindrical head screw type and arranged uniformly along a circle. In the embodiment shown in the figures, the screws 19 are three in number and angularly offset by 120°.
  • Said module 2 further comprises a second circulation zone, hereinafter called discharge zone, intended for the discharge of said compressed fluid coming from volumetric pump 5.
  • discharge zone a second circulation zone, hereinafter called discharge zone, intended for the discharge of said compressed fluid coming from volumetric pump 5.
  • the body 4 of the module 2 comprises at least a first radial groove 23 provided on its peripheral face, constituting the discharge zone of the module 2 and being associated with a generally radial discharge duct 24 provided in said body 4 to allow the routing of the fluid from the discharge of the volumetric pump 5 to the first radial groove 23 of the body 4 of the module 2 (Cf. figure 2 ).
  • the body 4 of the module 2 further comprises two second radial grooves 25 arranged on either side of the first radial groove 23 and each adapted to receive an O-ring 26 bearing against the pump body 3, so as to avoid any communication between the discharge zone and the suction and return zones, or the outside of the modular pump 1 according to the invention.
  • This configuration is interesting, because the discharge of the pressurized fluid is carried out by the first radial groove 23 by creating a balance of the pressure forces, the latter being distributed over the entire peripheral face of the first radial groove 23 of the body 4 of the module. 2.
  • the modular pump 1 further comprises a pump body 3, in which the module 2 is at least partly inserted.
  • Said pump body 3 comprises a housing 27 adapted to receive the module 2, the latter being inserted at least in part by its front end, that is to say that located on the side opposite the free end of the end. free from shaft 10 of volumetric pump 5.
  • the pump body 3 incorporates at least one so-called cut-off solenoid valve, not shown, allowing the pressurized fluid from the module 2 to pass or not, and one or more pressure regulators, not shown, possibly associated with a switching and making it possible to maintain sufficient fluid pressure to allow, for example, its spraying at the level of a nozzle.
  • the shape of the pump body 3 and the position of the connecting members are determined to adapt the modular pump 1 according to the invention to the configuration of the associated heating installation and to the needs of the different manufacturers. .
  • the bottom 29 of the housing 27 of the pump body 3 advantageously comprises recesses 30 each capable of receiving the head of one of the screws 19 making it possible to assemble between them the body 4, the ring 7 and the flange 12 of the module 2 (Cf. figure 4 ). It is understood that this configuration allows the O-ring 18 arranged in the circular groove 17 arranged on the front face of the flange 12 of the module 2 to be compressed between the said front face and the bottom 29 of the housing 27.
  • this configuration also allows the blocking in rotation of the module 2 with respect to the pump body 3, the blocking in translation being ensured by a stop segment 31 disposed in an internal radial groove 31 provided on the housing 27 on the opposite side. audit bottom 29 (Cf. figure 2 and 3 ).
  • This configuration finally allows an adjustment of the angular position of the module 2 with respect to the pump body 3.
  • the modular pump 1 according to the invention can present an eccentricity between the diameter of the shaft 10 of the module 2 and the diameter of the housing 27 of the pump body 3, as is the case with a volumetric pump 5 of the internal gear pump type, it may be advantageous to be able to choose in which direction to orient the eccentricity. For this, it is possible, for example, to ensure that the screws 19 are such that they no longer have a uniform angular offset between them.
  • the screws 19 will advantageously have between them a uniform angular offset so that the installation of the module 2 is not dependent on a determined angular position. .
  • the suction, the delivery and the return of the fluid are carried out respectively via the annular zone 28 of the housing 27 of the pump body 3, the first radial groove 23 and the second radial groove 15 of the module 2 also facilitates the fluidic connection suction, discharge and return pipes from the pump body 3 with the module 2, because the ends of said suction, discharge and return pipes located on the side of the module 2 do not require precise angular positioning with respect to said module 2.
  • fluid connection or “fluidically connected” denotes here the fact that the modular pump 1 according to the invention is shaped so that, when the module 2 is inserted into said housing 27 of the pump body 3, the fluid can pass from the suction, delivery and return pipes of the pump body 3 to respectively the suction, delivery and return zones of said module 2 .
  • the particular configuration of the modular pump 1 according to the invention is interesting, because all the moving elements subjected to significant mechanical forces are arranged only in the module 2, which has the consequence that only the module 2 must be made of a resistant material such as steel or cast iron, the pump body 3 possibly being made of a less "noble” material such as an aluminum alloy, for example. It is then understood that this particular allows a significant reduction in the cost price of the modular pump 1 according to the invention.
  • the particular configuration of the modular pump 1 according to the invention allows an interesting modularity, because it suffices to remove the module 2 from the pump body 3 to replace the pump body 3 with another adapted to the configuration of a another heating installation and/or the needs of another manufacturer.
  • the maintenance of the modular pump 1 according to the invention is also simplified, it suffices to remove the defective module 2 from the pump body 3 to replace it with a new one.
  • modular pump 1 makes it possible to achieve manufacturing savings, because one and the same model of module 2 can be associated with different models of pump body 3.
  • the modular pump 1 according to the invention is particularly intended for the nozzles of heating installations of the boiler type using pressurized domestic fuel oil, but it can also be used for any other type of equipment or installation and/or for pressurized by a fluid completely different from domestic fuel oil.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

La présente invention concerne une pompe modulaire (1) pour la compression d'un fluide contenu dans une cuve de stockage et destiné à un équipement remarquable en en ce qu'elle comprend au moins :- un module (2) recevant au moins une pompe volumétrique (5) et comprenant une zone d'aspiration et une zone de refoulement, et- un corps de pompe (3) comprenant un logement (27) dans lequel le module (2) est au moins en partie inséré de façon amovible, une canalisation d'aspiration permettant l'arrivée du fluide provenant de la cuve de stockage et une canalisation de refoulement permettant l'arrivée du fluide sous pression jusqu'à l'équipement, lesdites canalisations d'aspiration et de refoulement du corps de pompe (3) étant raccordées fluidiquement aux zones d'aspiration et de refoulement dudit module (2), lorsque ce dernier est inséré dans ledit logement (27).The present invention relates to a modular pump (1) for the compression of a fluid contained in a storage tank and intended for equipment remarkable in that it comprises at least:- a module (2) receiving at least one pump (5) and comprising a suction zone and a discharge zone, and- a pump body (3) comprising a housing (27) in which the module (2) is at least partially inserted in a removable manner, a suction pipe allowing the arrival of the fluid coming from the storage tank and a delivery pipe allowing the arrival of the pressurized fluid to the equipment, said suction and delivery pipes of the pump body (3 ) being fluidly connected to the suction and discharge zones of said module (2), when the latter is inserted into said housing (27).

Description

Domaine technique de l'inventionTechnical field of the invention

La présente invention se rapporte au domaine général des installations notamment du type installation de chauffage (domestique, collectif, industriel, mobile et embarqué) et plus particulièrement à des pompes volumétriques destinées auxdites installations de chauffage.The present invention relates to the general field of installations, in particular of the heating installation type (domestic, collective, industrial, mobile and on-board) and more particularly to volumetric pumps intended for said heating installations.

Etat de la techniqueState of the art

Dans le domaine des installations de chauffage du type chaudière utilisant du fioul domestique, il est connu d'utiliser des pompes volumétriques entraînées, de manière classique par un moteur électrique, les pompes puisant ledit fioul dans une cuve de stockage et le rejetant sous pression en direction du gicleur associé au brûleur de la chaudière. Par ailleurs, ces pompes sont associées à au moins une électrovanne laissant passer ou non le fioul et un régulateur de pression permettant de maintenir une pression suffisante de fioul pour permettre sa pulvérisation au niveau du gicleur, l'électrovanne et le régulateur de pression étant souvent intégrés au corps desdites pompes.In the field of heating installations of the boiler type using domestic fuel oil, it is known practice to use volumetric pumps driven, conventionally by an electric motor, the pumps drawing said fuel oil from a storage tank and rejecting it under pressure direction of the nozzle associated with the boiler burner. Furthermore, these pumps are associated with at least one solenoid valve allowing the fuel oil to pass or not and a pressure regulator making it possible to maintain a sufficient pressure of fuel oil to allow it to be sprayed at the level of the nozzle, the solenoid valve and the pressure regulator often being integrated into the body of said pumps.

Pour cela, chaque pompe volumétrique doit être conçue pour s'adapter aux besoins et configurations des différents fabricants de chaudières à fioul domestique. Il est donc nécessaire de fabriquer autant de modèle de pompes que de configurations de chaudières, ceci représente l'inconvénient majeur de ces pompes volumétriques. En effet, le fabricant de ce type de pompes doit avoir une gamme étendue et gérer un stock important de pompes au prix de revient élevé puisque réalisées dans des matériaux résistants aux pressions élevées tel que l'acier ou la fonte.For this, each volumetric pump must be designed to adapt to the needs and configurations of the different manufacturers of domestic oil boilers. It is therefore necessary to manufacture as many pump models as there are boiler configurations, this representing the major drawback of these volumetric pumps. Indeed, the manufacturer of this type of pump must have a wide range and manage a large stock of pumps at a high cost price since they are made of materials resistant to high pressures such as steel or cast iron.

Ces inconvénients sont en partie résolus par des pompes modulaires telles que celle décrite dans la demande de brevet américain US 2019/360484 , cette dernière ne permettant une adaptation aisée aux besoins et configurations des différents fabricants.These disadvantages are partly solved by modular pumps such as that described in the American patent application US 2019/360484 , the latter not allowing easy adaptation to the needs and configurations of different manufacturers.

Résumé de l'inventionSummary of the invention

Le but de la présente invention est donc de proposer une pompe modulaire peu onéreuse, compacte, facile à fabriquer, et pouvant s'adapter facilement aux besoins et configurations des différents fabricants, notamment de chaudières à fioul domestique.The object of the present invention is therefore to provide a modular pump that is inexpensive, compact, easy to manufacture, and can be easily adapted to the needs and configurations of the various manufacturers, in particular of domestic oil boilers.

Conformément à l'invention, il est donc proposé une pompe modulaire pour la compression d'un fluide contenu dans une cuve de stockage et destiné à un équipement nécessitant du fluide sous pression comprenant au moins :

  • un module recevant au moins une pompe volumétrique et comprenant une zone d'aspiration destinée à l'aspiration dudit fluide vers la pompe volumétrique et une zone de refoulement destinée au refoulement dudit fluide comprimé provenant de la pompe volumétrique, et
  • un corps de pompe comprenant un logement dans lequel le module est au moins en partie inséré de façon amovible, une canalisation d'aspiration permettant l'arrivée du fluide provenant de la cuve de stockage et une canalisation de refoulement permettant l'arrivée du fluide sous pression jusqu'à l'équipement, lesdites canalisations d'aspiration et de refoulement du corps de pompe étant raccordées fluidiquement aux zones d'aspiration et de refoulement dudit module, lorsque ce dernier est inséré dans ledit logement, ladite pompe modulaire étant remarquable en ce que la zone de refoulement du module est constituée par au moins une première gorge radiale aménagée sur sa face périphérique du corps du module et associée à un orifice de refoulement globalement radial aménagé dans ledit corps pour permettre l'acheminement du fluide depuis le refoulement de la pompe volumétrique jusqu'à ladite première gorge radiale et en ce que le corps du module comporte en outre deux deuxièmes gorges radiales disposées de part et d'autre de la première gorge radiale et aptes à recevoir chacune un joint torique venant en appui contre le corps de pompe, de sorte à éviter toute communication entre la zone de refoulement et les zones d'aspiration et de retour, ou l'extérieur de la pompe modulaire.
In accordance with the invention, there is therefore proposed a modular pump for the compression of a fluid contained in a storage tank and intended for equipment requiring pressurized fluid comprising at least:
  • a module receiving at least one volumetric pump and comprising a suction zone intended for the suction of said fluid towards the volumetric pump and a discharge zone intended for the discharge of said compressed fluid coming from the volumetric pump, and
  • a pump body comprising a housing in which the module is at least partly removably inserted, a suction pipe allowing the arrival of the fluid coming from the storage tank and a delivery pipe allowing the arrival of the fluid under pressure to the equipment, said suction and delivery pipes of the pump body being fluidly connected to the suction and delivery zones of said module, when the latter is inserted into said housing, said modular pump being remarkable in that that the discharge zone of the module is constituted by at least a first radial groove arranged on its peripheral face of the body of the module and associated with a generally radial discharge orifice arranged in said body to allow the routing of the fluid from the discharge of the volumetric pump up to said first radial groove and in that the body of the module further comprises two second radial grooves d positioned on either side of the first radial groove and each capable of receiving an O-ring bearing against the pump body, so as to avoid any communication between the discharge zone and the suction and return zones, or the exterior of the modular pump.

Selon un mode de réalisation particulier, le module comprend une zone de retour destinée au retour du fluide en excès non utilisé par ledit équipement depuis la pompe volumétrique et le corps de pompe comprend une canalisation de retour permettant le retour éventuel du fluide en excès vers la cuve de stockage et étant raccordée fluidiquement à la zone de retour dudit module, lorsque ce dernier est inséré dans ledit logementAccording to a particular embodiment, the module comprises a return zone intended for the return of the excess fluid not used by said equipment from the volumetric pump and the pump body comprises a return pipe allowing the possible return of the excess fluid to the storage tank and being fluidly connected to the return zone of said module, when the latter is inserted into said housing

De manière avantageuse, le module comporte un corps en forme globale de cylindre, une bague solidaire dudit corps et recevant au moins une pompe volumétrique, et un flasque solidaire de ladite bague.Advantageously, the module comprises a body in the overall shape of a cylinder, a ring integral with said body and receiving at least one volumetric pump, and a flange integral with said ring.

La pompe volumétrique est avantageusement du type pompe à engrenage interne et comporte une couronne à denture interne apte à pivoter à l'intérieur de ladite bague autour de l'axe longitudinal du corps du module, un pignon à denture externe excentré et un croissant comblant l'espace interne entre la couronne et le pignon, ce dernier étant solidaire d'une des extrémités d'un arbre pivotant par rapport audit corps autour d'un axe sensiblement parallèlement à l'axe longitudinal de ce dernier, et étant configuré pour que son extrémité libre soit disposée à l'extérieur dudit corps du côté opposé au corps de pompe, lorsque ledit module est inséré dans ledit corps de pompe, et associée à un moteur.The volumetric pump is advantageously of the internal gear pump type and comprises a ring gear with internal teeth capable of pivoting inside said ring around the longitudinal axis of the body of the module, a pinion with eccentric external teeth and a crescent filling the internal space between the crown and the pinion, the latter being fixed to one of the ends of a shaft pivoting with respect to said body about an axis substantially parallel to the longitudinal axis of the latter, and being configured so that its free end is disposed outside said body on the side opposite the pump body, when said module is inserted into said pump body , and associated with a motor.

Selon un mode de réalisation avantageux, la zone d'aspiration du module est constituée par au moins une première rainure radiale aménagée sur la face arrière du flasque de sorte à déboucher à l'extérieur de la face périmétrique dudit flasque pour permettre l'acheminement du fluide depuis la face périmétrique jusqu'à l'aspiration de la pompe volumétrique.According to an advantageous embodiment, the suction zone of the module is constituted by at least one first radial groove arranged on the rear face of the flange so as to emerge outside the perimeter face of the said flange to allow routing of the fluid from the perimeter face to the suction of the volumetric pump.

De manière avantageuse, le flasque comporte sur sa face avant une deuxième rainure radiale depuis le centre de ce dernier jusqu'à déboucher à l'extérieur de la face périmétrique dudit flasque, et une rainure circulaire coupant ladite deuxième rainure radiale et étant apte à recevoir un joint torique.Advantageously, the flange comprises on its front face a second radial groove from the center of the latter until it emerges outside the perimeter face of said flange, and a circular groove intersecting said second radial groove and being capable of receiving an O-ring.

La zone de retour du module est alors constituée par la zone se trouvant à l'intérieur de ladite rainure circulaire, la deuxième rainure radiale permettant de faire la liaison entre les deux zones d'aspiration et de retour en l'absence du joint torique.The return zone of the module is then constituted by the zone located inside said circular groove, the second radial groove making it possible to make the connection between the two suction and return zones in the absence of the O-ring.

Le module comprend de préférence une pluralité d'organes de fixation aptes à assembler le corps, la bague et le flasque entre eux, chaque organe de fixation étant une vis apte à être insérée dans un orifice réalisé dans le flasque puis dans un orifice réalisé dans la bague, et vissée dans un taraudage réalisé dans le corps, la tête de ladite vis venant alors en appui contre la face avant dudit flasque, et le fond du logement du corps de pompe comporte, de manière avantageuse, des évidements aptes chacun à recevoir la tête d'une des vis.The module preferably comprises a plurality of fixing members capable of assembling the body, the ring and the flange together, each fixing member being a screw capable of being inserted into an orifice made in the flange then into an orifice made in the ring, and screwed into a thread made in the body, the head of said screw then coming to rest against the front face of said flange, and the bottom of the housing of the pump body advantageously comprises recesses each capable of receiving the head of one of the screws.

Brève description des figuresBrief description of figures

D'autres avantages et caractéristiques ressortiront mieux de la description qui va suivre d'un mode d'exécution de l'invention en référence aux figures annexées sur lesquelles :

  • [Fig 1] est une vue en perspective d'une pompe modulaire selon l'invention,
  • [Fig 2] est une vue en coupe verticale de la pompe de la figure 1,
  • [Fig 3] est une vue en perspective éclatée de la pompe de la figure 1,
  • [Fig 4] est une vue en perspective du corps de pompe de la figure 1,
  • [Fig 5] est une vue en perspective du module de la figure 1,
  • [Fig 6] est une vue de la face avant du flasque du module de la figure 5,
  • [Fig 7] est une vue en perspective éclatée du module de la figure 5,
  • [Fig 8] est une vue en perspective éclatée partielle du module de la figure 5 selon un angle de vue différent.
Other advantages and characteristics will emerge better from the following description of an embodiment of the invention with reference to the appended figures in which:
  • [ Fig 1 ] is a perspective view of a modular pump according to the invention,
  • [ Fig 2 ] is a vertical sectional view of the pump from the figure 1 ,
  • [ Fig.3 ] is an exploded perspective view of the pump of the figure 1 ,
  • [ Fig 4 ] is a perspective view of the pump body of the figure 1 ,
  • [ Fig.5 ] is a perspective view of the module of the figure 1 ,
  • [ Fig 6 ] is a view of the front of the flange of the module of the figure 5 ,
  • [ Fig 7 ] is an exploded perspective view of the module of the figure 5 ,
  • [ Fig.8 ] is a partial exploded perspective view of the module of the figure 5 from a different perspective.

Description des modes de réalisationDescription of embodiments

Sur les figures 1 à 8, on a représenté une pompe modulaire 1 conforme à l'invention, pour mettre en pression un fluide destiné notamment à un équipement, non représenté, et comportant un module 2 et un corps de pompe 3, dans lequel est au moins en partie inséré de manière amovible ledit module 2, ce dernier comportant un corps 4 en forme globale de cylindre.On the figures 1 to 8 , there is shown a modular pump 1 in accordance with the invention, for pressurizing a fluid intended in particular for equipment, not shown, and comprising a module 2 and a pump body 3, in which is at least partially inserted removably said module 2, the latter comprising a body 4 in the overall shape of a cylinder.

Dans l'exemple de réalisation non limitatif décrit, l'équipement du fluide sous pression est un équipement d'une installation de chauffage du type domestique, collectif, industriel, mobile ou encore embarqué, ledit équipement étant alors un gicleur recevant du fioul sous pression, ledit gicleur étant déporté ou fixé directement sur le corps de pompe 3.In the non-limiting embodiment described, the pressurized fluid equipment is equipment of a heating installation of the domestic, collective, industrial, mobile or even on-board type, said equipment then being a nozzle receiving pressurized fuel , said nozzle being offset or fixed directly to the pump body 3.

On entend ici par "cylindre" un volume formé par une droite qui se déplace parallèlement à elle-même en s'appuyant sur une courbe plane et pas uniquement un cylindre de révolution.The term “cylinder” is understood here to mean a volume formed by a straight line which moves parallel to itself while resting on a plane curve and not only a cylinder of revolution.

Le corps 4 dudit module 2 reçoit au moins une pompe volumétrique 5, cette dernière étant avantageusement, pour des raisons évidentes de compacité, du type pompe à engrenages internes et comprenant :

  • une couronne 6 à denture interne apte à pivoter à l'intérieur d'une bague 7 solidaire dudit corps 4, et autour de l'axe longitudinal de ce dernier,
  • un pignon 8 à denture externe excentré, et
  • un croissant 9 comblant l'espace interne entre la couronne 6 et le pignon 8 (Cf. figure 7).
The body 4 of said module 2 receives at least one volumetric pump 5, the latter being advantageously, for obvious reasons of compactness, of the internal gear pump type and comprising:
  • a crown 6 with internal teeth capable of pivoting inside a ring 7 integral with said body 4, and around the longitudinal axis of the latter,
  • a pinion 8 with eccentric external teeth, and
  • a crescent 9 filling the internal space between crown 6 and pinion 8 (Cf. figure 7 ).

La pompe volumétrique 5 pourra évidemment être d'un tout autre type tel que, par exemple, pompe gerotor (c'est-à-dire une pompe à engrenages internes sans croissant séparateur), pompe à palettes ou encore à pistons axiaux ou radiaux, sans sortir du cadre de la présente invention.The positive-displacement pump 5 could obviously be of a completely different type such as, for example, a gerotor pump (that is to say an internal gear pump without separating crescent), vane pump or even axial or radial piston pump, without departing from the scope of the present invention.

Ledit pignon 8 est en outre fixé à l'une des extrémités d'un arbre 10 pivotant par rapport au corps 4 du module 2 autour d'un axe sensiblement parallèle à l'axe longitudinal de ce dernier. Cet arbre 10 est configuré pour que son extrémité libre soit disposée à l'extérieur dudit corps 4 du côté opposé au corps de pompe 3, lorsque le module 2 est inséré dans ledit corps de pompe 3. Ledit arbre 10 est agencé pour être associé par son extrémité libre, de manière classique, à un moteur avantageusement électrique, non représenté, de manière à entrainer dans le même sens de rotation ladite couronne 6. L'étanchéité entre l'arbre 10 et le corps 4 du module 2 est assurée, de manière classique, par un joint à lèvre 11 situé du côté de l'extrémité libre dudit arbre 10 (Cf. figure 2). L'étanchéité entre l'arbre 10 et le corps 4 du module 2 pourra être assurée par d'autres moyens d'étanchéité tels que, par exemple, une garniture mécanique, sans sortir du cadre de la présente invention.Said pinion 8 is also fixed to one of the ends of a shaft 10 pivoting with respect to the body 4 of the module 2 about an axis substantially parallel to the longitudinal axis of the latter. This shaft 10 is configured so that its free end is disposed outside of said body 4 on the side opposite pump body 3, when module 2 is inserted into said pump body 3. Said shaft 10 is arranged to be associated by its free end, in a conventional manner, to an advantageously electric motor, not shown, so as to drive said ring gear 6 in the same direction of rotation. The seal between the shaft 10 and the body 4 of the module 2 is ensured, conventional manner, by a lip seal 11 located on the side of the free end of said shaft 10 (Cf. figure 2 ). The seal between the shaft 10 and the body 4 of the module 2 may be ensured by other sealing means such as, for example, a mechanical seal, without departing from the scope of the present invention.

En référence aux figures 5 à 8, ledit module 2 comprend en outre au moins :

  • deux premières zones de circulation du fluide destinées respectivement à l'aspiration dudit fluide provenant de la pompe volumétrique 5 et le retour du fluide en excès non utilisé par le gicleur de ladite installation de chauffage, lesdites deux premières zones de circulation, nommée ci-après zone d'aspiration et zone de retour, étant avantageusement aménagées sur un flasque 12 solidaire de la bague 7 disposé à l'extrémité du module 2 située du côté opposé de l'extrémité libre de l'arbre 10 de la pompe volumétrique 5, et
  • une deuxième zone de circulation destinée au refoulement dudit fluide comprimé provenant de la pompe volumétrique 5.
With reference to figures 5 to 8 , said module 2 further comprises at least:
  • two first fluid circulation zones intended respectively for the suction of said fluid coming from the positive-displacement pump 5 and the return of the excess fluid not used by the nozzle of said heating installation, said two first circulation zones, named hereinafter suction zone and return zone, being advantageously arranged on a flange 12 secured to the ring 7 arranged at the end of the module 2 located on the opposite side of the free end of the shaft 10 of the positive-displacement pump 5, and
  • a second circulation zone intended for the delivery of said compressed fluid coming from the volumetric pump 5.

Cette configuration est intéressante, dans la mesure où lors de l'aspiration et du retour, le fluide est à une pression proche de la pression atmosphérique (par exemple de l'ordre de ± 0,5 bar), il n'y a donc peu d'effort axial entre le module 2 et le corps de pompe 3 au niveau de l'extrémité dudit module 2 recevant le flasque 12.This configuration is interesting, insofar as during suction and return, the fluid is at a pressure close to atmospheric pressure (for example of the order of ± 0.5 bar), there is therefore no little axial force between module 2 and pump body 3 at the end of said module 2 receiving flange 12.

Pour ce faire, le flasque 12 comporte sur sa face arrière au moins une première rainure radiale 13 constituant la zone d'aspiration du module 2 et étant aménagée de sorte à déboucher à l'extérieur sur la face périmétrique 14 dudit flasque 12 pour permettre l'acheminement du fluide depuis la face périmétrique 14 jusqu'à l'aspiration de la pompe volumétrique 5. La zone d'aspiration pourra également comporter plusieurs premières rainures radiales 13, par exemple deux comme représenté sur la figure 8.To do this, the flange 12 has on its rear face at least a first radial groove 13 constituting the suction zone of the module 2 and being arranged so as to emerge on the outside on the perimeter face 14 of said flange 12 to allow the routing of the fluid from the perimeter face 14 to the suction of the positive-displacement pump 5. The suction zone may also comprise several first radial grooves 13, for example two as represented on the figure 8 .

On désigne ici par "avant" un élément ou une partie d'élément du module 2 située du côté du corps de pompe 3, lorsque le module 2 est en partie inséré dans ce dernier, et par "arrière" un élément ou une partie d'élément du module 2 située du côté opposé.The term "front" designates here an element or part of an element of the module 2 located on the side of the pump body 3, when the module 2 is partly inserted into the latter, and by "rear" an element or a part of element of module 2 located on the opposite side.

Par ailleurs, le flasque 12 comporte au moins une deuxième rainure radiale 15 étant aménagée sur la face avant dudit flasque 12 depuis le centre de ce dernier jusqu'à déboucher à l'extérieur sur la face périmétrique 14 dudit flasque 12 (Cf. figures 6 et 7).Furthermore, the flange 12 comprises at least one second radial groove 15 being provided on the front face of said flange 12 from the center of the latter until it emerges on the outside on the perimeter face 14 of said flange 12 (Cf. figures 6 and 7 ).

Le flasque 12 comporte également sur sa face avant une rainure circulaire 17 coupant la deuxième rainure radiale 15 apte à recevoir un joint torique 18 de sorte à séparer les deux zones d'aspiration et de retour (Cf. figures 6 et 7) en venant en appui contre le corps de pompe 3, lorsque le module 2 est en partie inséré dans ce dernier. En effet, la zone de retour est alors constituée par la zone se trouvant à l'intérieur de ladite rainure circulaire 17 recevant ledit joint torique 18, la deuxième rainure radiale 15 permettant de faire la liaison entre les deux zones d'aspiration et de retour.The flange 12 also has on its front face a circular groove 17 intersecting the second radial groove 15 capable of receiving an O-ring 18 so as to separate the two suction and return zones (Cf. figures 6 and 7 ) by bearing against the pump body 3, when the module 2 is partly inserted into the latter. Indeed, the return zone is then constituted by the zone located inside said circular groove 17 receiving said O-ring 18, the second radial groove 15 making it possible to make the connection between the two suction and return zones. .

Ledit joint torique 18 peut facilement être enlevé en démontant le module 2 du corps de pompe 3 de sorte à pouvoir utiliser la pompe modulaire 1 sur différents types d'installations. Ainsi, lorsque le joint torique 18 est disposé dans la rainure circulaire 17, la pompe modulaire 1 peut alors équiper une installation bitube, dans laquelle le fluide passant par la zone de retour va directement à l'extérieur dudit module 2. A l'inverse, lorsque le joint torique 18 n'est pas disposé dans la rainure circulaire 17, la pompe modulaire 1 peut alors équiper une installation monotube, dans laquelle le fluide passant par la zone de retour repasse directement à la zone d'aspiration.Said O-ring 18 can easily be removed by dismantling the module 2 from the pump body 3 so as to be able to use the modular pump 1 on different types of installations. Thus, when the O-ring 18 is placed in the circular groove 17, the modular pump 1 can then equip a twin-tube installation, in which the fluid passing through the return zone goes directly outside of said module 2. Conversely , when the O-ring 18 is not placed in the circular groove 17, the modular pump 1 can then equip a single-tube installation, in which the fluid passing through the return zone returns directly to the suction zone.

Par ailleurs, on comprend bien que, dans le cas d'une pompe modulaire 1 dédiée exclusivement à des installations monotubes, le module 2 et le corps de pompe 3 de ladite pompe modulaire 1 pourront ne pas comporter respectivement de zone de retour et de canalisation de retour (décrite plus loin), sans sortir du cadre de la présente invention.Furthermore, it is understood that, in the case of a modular pump 1 dedicated exclusively to one-pipe installations, the module 2 and the pump body 3 of said modular pump 1 may not include a return zone and a channeling zone respectively. back (described later), without departing from the scope of the present invention.

Le module 2 comprend en outre une pluralité d'organes de fixation aptes à assembler entre eux le corps 4, la bague 7 et le flasque 12. Chaque organe de fixation est avantageusement une vis 19 apte à être insérée dans un orifice 20 réalisé dans le flasque 12 puis dans un orifice 21 réalisé dans la bague 7, et vissée dans un taraudage 22 réalisé dans le corps 4, la tête de ladite vis 19 venant alors en appui contre la face avant dudit flasque 12 (Cf. figures 2 et 7). Pour des raisons qui seront développées plus loin dans la présente description, le module 2 comprend plusieurs vis 19, ces dernières étant de préférence du type vis à tête cylindrique et disposées de façon uniforme le long d'un cercle. Dans l'exemple de réalisation représenté sur les figures, les vis 19 sont au nombre de trois et décalées angulairement de 120°.The module 2 further comprises a plurality of fixing members capable of assembling together the body 4, the ring 7 and the flange 12. Each fixing member is advantageously a screw 19 capable of being inserted into an orifice 20 made in the flange 12 then into an orifice 21 made in ring 7, and screwed into a thread 22 made in body 4, the head of said screw 19 then coming to bear against the front face of said flange 12 (Cf. figure 2 and 7 ). For reasons which will be developed later in the present description, the module 2 comprises several screws 19, the latter preferably being of the cylindrical head screw type and arranged uniformly along a circle. In the embodiment shown in the figures, the screws 19 are three in number and angularly offset by 120°.

Ledit module 2 comprend en outre une deuxième zone de circulation, nommée ci-après zone de refoulement, destinée au refoulement dudit fluide comprimé provenant de la pompe volumétrique 5.Said module 2 further comprises a second circulation zone, hereinafter called discharge zone, intended for the discharge of said compressed fluid coming from volumetric pump 5.

Pour cela, le corps 4 du module 2 comporte au moins une première gorge radiale 23 aménagée sur sa face périphérique, constituant la zone de refoulement du module 2 et étant associée à un conduit de refoulement 24 globalement radial aménagé dans ledit corps 4 pour permettre l'acheminement du fluide depuis le refoulement de la pompe volumétrique 5 jusqu'à la première gorge radiale 23 du corps 4 du module 2 (Cf. figure 2).For this, the body 4 of the module 2 comprises at least a first radial groove 23 provided on its peripheral face, constituting the discharge zone of the module 2 and being associated with a generally radial discharge duct 24 provided in said body 4 to allow the routing of the fluid from the discharge of the volumetric pump 5 to the first radial groove 23 of the body 4 of the module 2 (Cf. figure 2 ).

Le corps 4 du module 2 comporte en outre deux deuxièmes gorges radiales 25 disposées de part et d'autre de la première gorge radiale 23 et aptes à recevoir chacune un joint torique 26 venant en appui contre le corps de pompe 3, de sorte à éviter toute communication entre la zone de refoulement et les zones d'aspiration et de retour, ou l'extérieur de la pompe modulaire 1 conforme à l'invention. Cette configuration est intéressante, car le refoulement du fluide sous pression s'effectue par la première gorge radiale 23 en créant un équilibre des forces de pression, ces dernières étant réparties sur toute la face périphérique de la première gorge radiale 23 du corps 4 du module 2.The body 4 of the module 2 further comprises two second radial grooves 25 arranged on either side of the first radial groove 23 and each adapted to receive an O-ring 26 bearing against the pump body 3, so as to avoid any communication between the discharge zone and the suction and return zones, or the outside of the modular pump 1 according to the invention. This configuration is interesting, because the discharge of the pressurized fluid is carried out by the first radial groove 23 by creating a balance of the pressure forces, the latter being distributed over the entire peripheral face of the first radial groove 23 of the body 4 of the module. 2.

Comme précédemment décrit et en référence aux figures 1 à 4, la pompe modulaire 1 selon l'invention comporte en outre un corps de pompe 3, dans lequel le module 2 est au moins en partie inséré. Ledit corps de pompe 3 comprend un logement 27 apte à recevoir le module 2, ce dernier étant inséré au moins en partie par son extrémité avant, c'est-à-dire celle située du côté opposé à l'extrémité libre de l'extrémité libre de l'arbre 10 de la pompe volumétrique 5.As previously described and with reference to figures 1 to 4 , the modular pump 1 according to the invention further comprises a pump body 3, in which the module 2 is at least partly inserted. Said pump body 3 comprises a housing 27 adapted to receive the module 2, the latter being inserted at least in part by its front end, that is to say that located on the side opposite the free end of the end. free from shaft 10 of volumetric pump 5.

De manière avantageuse, le corps de pompe 3 intègre au moins une électrovanne dite de coupure, non représentée, laissant passer ou non le fluide sous pression provenant du module 2 et un ou plusieurs régulateurs de pression, non représentés, éventuellement associés à une électrovanne de commutation et permettant de maintenir une pression suffisante de fluide pour permettre, par exemple, sa pulvérisation au niveau d'un gicleur.Advantageously, the pump body 3 incorporates at least one so-called cut-off solenoid valve, not shown, allowing the pressurized fluid from the module 2 to pass or not, and one or more pressure regulators, not shown, possibly associated with a switching and making it possible to maintain sufficient fluid pressure to allow, for example, its spraying at the level of a nozzle.

De même, le corps de pompe 3 comprend également un certain nombre de canalisation internes, non représentées, telles que, notamment :

  • une canalisation d'aspiration permettant l'arrivée du fluide provenant d'une cuve de stockage jusqu'à une zone annulaire 28 du logement 27 située au droit de la (ou des) première(s) rainure(s) radiale(s) 23 du module 2, lorsqu'il est mis en place dans ledit logement 27 (Cf. figure 2), ladite zone annulaire 28 est déterminée par l'espace situé entre la face périphérique interne dudit logement 27 et la face externe du module 2 et entre le joint torique 18 disposé dans la rainure circulaire 17 de la face avant du flasque 12 du module 2 et le joint torique 26 disposé dans la deuxième gorge radiale 25 située du côté du flasque 12 du module 2
  • une canalisation de refoulement permettant l'arrivée du fluide sous pression jusqu'au régulateur de pression et l'électrovanne de coupure afin d'être ensuite envoyé en direction du gicleur associé à l'installation de chauffage, ledit fluide sous pression provenant de la première gorge radiale 23 du module 2, lorsqu'il est mis en place dans ledit logement 27, et
  • une canalisation de retour permettant le retour éventuel du fluide sous pression vers la cuve de stockage depuis le régulateur de pression et la deuxième rainure radiale 15 du module 2, lorsqu'il est mis en place dans ledit logement 27.
Similarly, the pump body 3 also includes a number of internal pipes, not shown, such as, in particular:
  • a suction pipe allowing the arrival of the fluid coming from a storage tank to an annular zone 28 of the housing 27 located to the right of the first radial groove(s) 23 of module 2, when it is placed in said housing 27 (Cf. figure 2 ), said annular zone 28 is determined by the space situated between the internal peripheral face of said housing 27 and the external face of module 2 and between the O-ring 18 arranged in the circular groove 17 of the front face of flange 12 of module 2 and the O-ring 26 disposed in the second radial groove 25 located on the side of the flange 12 of the module 2
  • a discharge pipe allowing the arrival of the pressurized fluid to the pressure regulator and the cut-off solenoid valve in order to then be sent in the direction of the nozzle associated with the heating installation, said pressurized fluid coming from the first radial groove 23 of module 2, when it is placed in said housing 27, and
  • a return pipe allowing the possible return of the pressurized fluid to the storage tank from the pressure regulator and the second radial groove 15 of the module 2, when it is placed in said housing 27.

En l'absence du joint torique 18 disposé dans la rainure circulaire 17 de la face avant du flasque 12, la zone annulaire 28 du logement 27 ne sera évidemment délimitée que par le joint torique 26 disposé dans la deuxième gorge radiale 25 située du côté du flasque 12 du module 2.In the absence of the O-ring 18 disposed in the circular groove 17 of the front face of the flange 12, the annular zone 28 of the housing 27 will obviously be delimited only by the O-ring 26 disposed in the second radial groove 25 located on the side of the flange 12 of module 2.

On comprend bien que le corps de pompe 3 de la pompe modulaire 1 doit comprendre des organes de raccordement, non représentés, permettant de raccorder :

  • les canalisations d'aspiration et de retour à la cuve de stockage de fluide, et
  • la canalisation de refoulement au gicleur de l'installation de chauffage, sauf si ledit gicleur est directement fixé sur ledit corps de pompe 3.
It is understood that the pump body 3 of the modular pump 1 must include connecting members, not shown, for connecting:
  • the suction and return lines to the fluid storage tank, and
  • the delivery pipe to the nozzle of the heating installation, unless said nozzle is directly attached to said pump body 3.

Par ailleurs, il va de soi que la forme du corps de pompe 3 et la position des organes de raccordement sont déterminées pour adapter la pompe modulaire 1 selon l'invention à la configuration de l'installation de chauffage associée et aux besoins des différents fabricants.Furthermore, it goes without saying that the shape of the pump body 3 and the position of the connecting members are determined to adapt the modular pump 1 according to the invention to the configuration of the associated heating installation and to the needs of the different manufacturers. .

Par ailleurs, le fond 29 du logement 27 du corps de pompe 3 comporte avantageusement des évidements 30 aptes chacun à recevoir la tête d'une des vis 19 permettant d'assembler entre eux le corps 4, la bague 7 et le flasque 12 du module 2 (Cf. figure 4). On comprend que cette configuration permet au joint torique 18 disposé dans la rainure circulaire 17 aménagée sur la face avant du flasque 12 du module 2 d'être comprimé entre ladite face avant et le fond 29 du logement 27.Furthermore, the bottom 29 of the housing 27 of the pump body 3 advantageously comprises recesses 30 each capable of receiving the head of one of the screws 19 making it possible to assemble between them the body 4, the ring 7 and the flange 12 of the module 2 (Cf. figure 4 ). It is understood that this configuration allows the O-ring 18 arranged in the circular groove 17 arranged on the front face of the flange 12 of the module 2 to be compressed between the said front face and the bottom 29 of the housing 27.

Par ailleurs, cette configuration permet également le blocage en rotation du module 2 par rapport au corps de pompe 3, le blocage en translation étant assuré par un segment d'arrêt 31 disposé dans une gorge radiale interne 31 aménagée sur le logement 27 du côté opposé audit fond 29 (Cf. figures 2 et 3).Furthermore, this configuration also allows the blocking in rotation of the module 2 with respect to the pump body 3, the blocking in translation being ensured by a stop segment 31 disposed in an internal radial groove 31 provided on the housing 27 on the opposite side. audit bottom 29 (Cf. figure 2 and 3 ).

Cette configuration permet enfin un réglage de la position angulaire du module 2 par rapport au corps de pompe 3. En effet, dans la mesure où la pompe modulaire 1 selon l'invention peut présenter une excentricité entre le diamètre de l'arbre 10 du module 2 et le diamètre du logement 27 du corps de pompe 3, comme cela est le cas avec une pompe volumétrique 5 du type pompe à engrenages internes, il peut être intéressant de pouvoir choisir dans quel sens orienter l'excentricité. Pour cela, on peut, par exemple, faire en sorte que les vis 19 soient telles qu'elles ne présentent plus entre elles un décalage angulaire uniforme. On comprend bien que le réglage de la position angulaire du module 2 par rapport au corps de pompe 3 n'empêche pas le bon fonctionnement de la pompe modulaire 1 selon l'invention, car l'aspiration du fluide est réalisée via la zone annulaire 28 du logement 27 et le refoulement du fluide sous pression est réalisé via la première gorge radiale 23 du module 2.This configuration finally allows an adjustment of the angular position of the module 2 with respect to the pump body 3. Indeed, insofar as the modular pump 1 according to the invention can present an eccentricity between the diameter of the shaft 10 of the module 2 and the diameter of the housing 27 of the pump body 3, as is the case with a volumetric pump 5 of the internal gear pump type, it may be advantageous to be able to choose in which direction to orient the eccentricity. For this, it is possible, for example, to ensure that the screws 19 are such that they no longer have a uniform angular offset between them. It is well understood that the adjustment of the angular position of the module 2 with respect to the pump body 3 does not prevent the correct operation of the modular pump 1 according to the invention, because the suction of the fluid is carried out via the annular zone 28 of the housing 27 and the discharge of the pressurized fluid is carried out via the first radial groove 23 of the module 2.

A l'inverse, pour renforcer le caractère modulable de la pompe modulaire 1 selon l'invention, les vis 19 présenteront avantageusement entre elles un décalage angulaire uniforme afin que la mise en place du module 2 ne soit pas tributaire d'une position angulaire déterminée.Conversely, to reinforce the modular nature of the modular pump 1 according to the invention, the screws 19 will advantageously have between them a uniform angular offset so that the installation of the module 2 is not dependent on a determined angular position. .

Le fait que l'aspiration, le refoulement et le retour du fluide soient réalisés respectivement via la zone annulaire 28 du logement 27 du corps de pompe 3, la première gorge radiale 23 et la deuxième rainure radiale 15 du module 2 facilite également le raccordement fluidique des canalisations d'aspiration, de refoulement et de retour du corps de pompe 3 avec le module 2, car les extrémités desdites canalisations d'aspiration, de refoulement et de retour située du côté du module 2 ne nécessitent pas de positionnement angulaire précis par rapport audit module 2.The fact that the suction, the delivery and the return of the fluid are carried out respectively via the annular zone 28 of the housing 27 of the pump body 3, the first radial groove 23 and the second radial groove 15 of the module 2 also facilitates the fluidic connection suction, discharge and return pipes from the pump body 3 with the module 2, because the ends of said suction, discharge and return pipes located on the side of the module 2 do not require precise angular positioning with respect to said module 2.

On désigne ici par "raccordement fluidique" ou "raccordées fluidiquement" le fait que la pompe modulaire 1 selon l'invention est conformée pour que, lorsque le module 2 est inséré dans ledit logement 27 du corps de pompe 3, le fluide puisse passer des canalisations d'aspiration, de refoulement et de retour du corps de pompe 3 vers respectivement les zones d'aspiration, de refoulement et de retour dudit module 2.The term "fluidic connection" or "fluidically connected" denotes here the fact that the modular pump 1 according to the invention is shaped so that, when the module 2 is inserted into said housing 27 of the pump body 3, the fluid can pass from the suction, delivery and return pipes of the pump body 3 to respectively the suction, delivery and return zones of said module 2 .

Par ailleurs, la configuration particulière de la pompe modulaire 1 selon l'invention est intéressante, car tous les éléments en mouvement soumis à des efforts mécaniques importants sont disposés uniquement dans le module 2, ce qui a pour conséquence que seul le module 2 doit être réalisé dans un matériau résistant tel que l'acier ou la fonte, le corps de pompe 3 pouvant être réalisé dans un matériau moins "noble" tel qu'un alliage d'aluminium, par exemple. On comprend alors bien que cette particulière permet une réduction significative du coût de revient de la pompe modulaire 1 selon l'invention.Furthermore, the particular configuration of the modular pump 1 according to the invention is interesting, because all the moving elements subjected to significant mechanical forces are arranged only in the module 2, which has the consequence that only the module 2 must be made of a resistant material such as steel or cast iron, the pump body 3 possibly being made of a less "noble" material such as an aluminum alloy, for example. It is then understood that this particular allows a significant reduction in the cost price of the modular pump 1 according to the invention.

De même, la configuration particulière de la pompe modulaire 1 selon l'invention permet une modularité intéressante, car il suffit de retirer le module 2 du corps de pompe 3 pour remplacer le corps de pompe 3 par un autre adapté à la configuration d'une autre installation de chauffage et/ou aux besoins d'un autre fabricant. La maintenance de la pompe modulaire 1 selon l'invention est également simplifié, il suffit de retirer le module 2 défectueux du corps de pompe 3 pour remplacer par un nouveau.Similarly, the particular configuration of the modular pump 1 according to the invention allows an interesting modularity, because it suffices to remove the module 2 from the pump body 3 to replace the pump body 3 with another adapted to the configuration of a another heating installation and/or the needs of another manufacturer. The maintenance of the modular pump 1 according to the invention is also simplified, it suffices to remove the defective module 2 from the pump body 3 to replace it with a new one.

Enfin, on comprend bien la configuration particulière de la pompe modulaire 1 selon l'invention permet de réaliser des économies de fabrication, car un seul et même modèle de module 2 peut être associé à différents modèles de corps de pompe 3.Finally, it is easy to understand the particular configuration of the modular pump 1 according to the invention makes it possible to achieve manufacturing savings, because one and the same model of module 2 can be associated with different models of pump body 3.

La pompe modulaire 1 selon l'invention est particulièrement destinée aux gicleurs d'installations de chauffage du type chaudière utilisant du fioul domestique sous pression, mais elle pourra également être utilisée pour un tout autre type d'équipement ou installation et/ou pour la mise sous pression d'un tout autre fluide que du fioul domestique.The modular pump 1 according to the invention is particularly intended for the nozzles of heating installations of the boiler type using pressurized domestic fuel oil, but it can also be used for any other type of equipment or installation and/or for pressurized by a fluid completely different from domestic fuel oil.

Enfin, il va de soi que les exemples de pompe modulaire 1 conformes à l'invention qui viennent d'être décrits ne sont que des illustrations particulières, en aucun cas limitatives de l'invention.Finally, it goes without saying that the examples of modular pump 1 in accordance with the invention which have just been described are only particular illustrations, in no way limiting the invention.

Claims (8)

Pompe modulaire (1) pour la compression d'un fluide contenu dans une cuve de stockage et destiné à un équipement nécessitant du fluide sous pression, comprenant au moins : - un module (2) recevant au moins une pompe volumétrique (5) et comprenant une zone d'aspiration destinée à l'aspiration dudit fluide vers la pompe volumétrique (5) et une zone de refoulement destinée au refoulement dudit fluide comprimé provenant de la pompe volumétrique (5), et - un corps de pompe (3) comprenant un logement (27) dans lequel le module (2) est au moins en partie inséré de façon amovible, une canalisation d'aspiration permettant l'arrivée du fluide provenant de la cuve de stockage et une canalisation de refoulement permettant l'arrivée du fluide sous pression jusqu'à l'équipement, lesdites canalisations d'aspiration et de refoulement du corps de pompe (3) étant raccordées fluidiquement aux zones d'aspiration et de refoulement dudit module (2), lorsque ce dernier est inséré dans ledit logement (27),
ladite pompe modulaire (1) étant caractérisée en ce que la zone de refoulement du module (2) est constituée par au moins une première gorge radiale (23) aménagée sur sa face périphérique du corps (4) du module (2) et associée à un orifice de refoulement (24) globalement radial aménagé dans ledit corps (4) pour permettre l'acheminement du fluide depuis le refoulement de la pompe volumétrique (5) jusqu'à ladite première gorge radiale (23) et en ce que le corps (4) du module (2) comporte en outre deux deuxièmes gorges radiales (25) disposées de part et d'autre de la première gorge radiale (23) et aptes à recevoir chacune un joint torique (26) venant en appui contre le corps de pompe (3), de sorte à éviter toute communication entre la zone de refoulement et les zones d'aspiration et de retour, ou l'extérieur de la pompe modulaire (1). Modular pump (1) for compressing a fluid contained in a storage tank and intended for equipment requiring pressurized fluid, comprising at least: - a module (2) receiving at least one volumetric pump (5) and comprising a suction zone intended for the suction of said fluid towards the volumetric pump (5) and a discharge zone intended for the discharge of said compressed fluid coming from the volumetric pump (5), and - a pump body (3) comprising a housing (27) in which the module (2) is at least partly inserted in a removable manner, a suction pipe allowing the arrival of the fluid coming from the storage tank and a discharge pipe allowing the arrival of pressurized fluid to the equipment, said suction and discharge pipes of the pump body (3) being fluidically connected to the suction and discharge zones of said module (2), when the latter is inserted into said housing (27),
said modular pump (1) being characterized in that the discharge zone of the module (2) consists of at least one first radial groove (23) provided on its peripheral face of the body (4) of the module (2) and associated with a generally radial delivery orifice (24) arranged in said body (4) to allow the flow of fluid from the delivery of the volumetric pump (5) to said first radial groove (23) and in that the body ( 4) of the module (2) further comprises two second radial grooves (25) arranged on either side of the first radial groove (23) and each capable of receiving an O-ring (26) bearing against the body of pump (3), so as to avoid any communication between the delivery zone and the suction and return zones, or the exterior of the modular pump (1). Pompe modulaire (1) selon la revendication 1 caractérisée en ce que le module (2) comprend une zone de retour destinée au retour du fluide en excès non utilisé par ledit équipement depuis la pompe volumétrique (5) et en ce que le corps de pompe (3) comprend une canalisation de retour permettant le retour éventuel du fluide en excès vers la cuve de stockage et étant raccordée fluidiquement à la zone de retour dudit module (2), lorsque ce dernier est inséré dans ledit logement (27).Modular pump (1) according to Claim 1 , characterized in that the module (2) comprises a return zone intended for the return of the excess fluid not used by the said equipment from the volumetric pump (5) and in that the pump body (3) includes a return pipe allowing the possible return of the excess fluid to the storage tank and being connected fluidically to the return zone of said module (2), when the latter is inserted into said housing (27). Pompe modulaire (1) selon l'une quelconque des revendications 1 ou 2 caractérisée en ce que le module (2) comporte un corps (4) en forme globale de cylindre, une bague (7) solidaire dudit corps (4) et recevant au moins une pompe volumétrique (5), et un flasque (12) solidaire de ladite bague (7).Modular pump (1) according to any one of Claims 1 or 2 , characterized in that the module (2) comprises a body (4) in the overall shape of a cylinder, a ring (7) integral with said body (4) and receiving at the least one volumetric pump (5), and a flange (12) integral with said ring (7). Pompe modulaire (1) selon la revendication 3 caractérisée en ce que la pompe volumétrique (5) est du type pompe à engrenage interne et comporte une couronne (6) à denture interne apte à pivoter à l'intérieur de ladite bague (7) autour de l'axe longitudinal du corps (4) du module (2), un pignon (8) à denture externe excentré et un croissant (9) comblant l'espace interne entre la couronne (6) et le pignon (8), ce dernier étant solidaire d'une des extrémités d'un arbre (10) pivotant par rapport audit corps (4) autour d'un axe sensiblement parallèlement à l'axe longitudinal de ce dernier, et étant configuré pour que son extrémité libre soit disposée à l'extérieur dudit corps (4) du côté opposé au corps de pompe (3), lorsque ledit module (2) est inséré dans ledit corps de pompe (3), et associée à un moteur.Modular pump (1) according to Claim 3 , characterized in that the volumetric pump (5) is of the internal gear pump type and comprises a ring gear (6) with internal teeth able to pivot inside the said ring (7) around of the longitudinal axis of the body (4) of the module (2), a pinion (8) with eccentric external teeth and a crescent (9) filling the internal space between the crown (6) and the pinion (8), this latter being integral with one of the ends of a shaft (10) pivoting with respect to said body (4) about an axis substantially parallel to the longitudinal axis of the latter, and being configured so that its free end is disposed at the outside of said body (4) on the side opposite the pump body (3), when said module (2) is inserted into said pump body (3), and associated with a motor. Pompe modulaire (1) selon l'une quelconque des revendications 1 à 4 caractérisée en ce que la zone d'aspiration du module (2) est constituée par au moins une première rainure radiale (13) aménagée sur la face arrière du flasque (12) de sorte à déboucher à l'extérieur de la face périmétrique (14) dudit flasque (12) pour permettre l'acheminement du fluide depuis la face périmétrique (14) jusqu'à l'aspiration de la pompe volumétrique (5).Modular pump (1) according to any one of Claims 1 to 4 , characterized in that the suction zone of the module (2) is constituted by at least one first radial groove (13) provided on the rear face of the flange (12 ) so as to emerge outside the perimeter face (14) of said flange (12) to allow the flow of fluid from the perimeter face (14) to the suction of the volumetric pump (5). Pompe modulaire (1) selon l'une quelconque des revendications 1 à 5 caractérisée en ce que le flasque (12) comporte sur sa face avant une deuxième rainure radiale (15) depuis le centre de ce dernier jusqu'à déboucher à l'extérieur de la face périmétrique (14) dudit flasque (12), et une rainure circulaire (17) coupant ladite deuxième rainure radiale (15) et étant apte à recevoir un joint torique (18).Modular pump (1) according to any one of Claims 1 to 5 , characterized in that the flange (12) has on its front face a second radial groove (15) from the center of the latter until it emerges outside of the perimeter face (14) of said flange (12), and a circular groove (17) intersecting said second radial groove (15) and being adapted to receive an O-ring (18). Pompe modulaire (1) selon les revendications 2 et 6 caractérisée en ce que la zone de retour du module (2) est constituée par la zone se trouvant à l'intérieur de ladite rainure circulaire (17), la deuxième rainure radiale (15) permettant de faire la liaison entre les deux zones d'aspiration et de retour en l'absence du joint torique (18).Modular pump (1) according to Claims 2 and 6 , characterized in that the return zone of the module (2) is constituted by the zone located inside the said circular groove (17), the second radial groove (15) allowing to make the connection between the two suction and return zones in the absence of the O-ring (18). Pompe modulaire (1) selon l'une quelconque des revendications 1 à 7 caractérisée en ce que le module (2) comprend une pluralité d'organes de fixation aptes à assembler le corps (4), la bague (7) et le flasque (12) entre eux, chaque organe de fixation étant une vis (19) apte à être insérée dans un orifice (20) réalisé dans le flasque (12) puis dans un orifice (21) réalisé dans la bague (7), et vissée dans un taraudage (22) réalisé dans le corps (4), la tête de ladite vis (19) venant alors en appui contre la face avant dudit flasque (12) et en ce que le fond (29) du logement (27) du corps de pompe (3) comporte avantageusement des évidements (30) aptes chacun à recevoir la tête d'une des vis (19).Modular pump (1) according to any one of Claims 1 to 7 , characterized in that the module (2) comprises a plurality of fixing members capable of assembling the body (4), the ring (7) and the flange ( 12) between them, each fixing member being a screw (19) capable of being inserted into an orifice (20) made in the flange (12) then into an orifice (21) made in the ring (7), and screwed into a thread (22) made in the body (4), the head of the said screw (19) then coming to bear against the front face of the said flange (12) and in that the bottom (29) of the housing (27) of the body pump (3) advantageously comprises recesses (30) each capable of receiving the head of one of the screws (19).
EP21205209.6A 2020-10-29 2021-10-28 Modular pump Active EP3992425B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2011104A FR3115840B1 (en) 2020-10-29 2020-10-29 MODULAR PUMP

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EP3992425A1 true EP3992425A1 (en) 2022-05-04
EP3992425C0 EP3992425C0 (en) 2023-07-26
EP3992425B1 EP3992425B1 (en) 2023-07-26

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EP (1) EP3992425B1 (en)
FR (1) FR3115840B1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2488345A1 (en) * 1980-08-09 1982-02-12 Hartwig Paulsen HEATABLE GEAR PUMP
KR20160004453A (en) * 2014-07-02 2016-01-13 영신정공 주식회사 Electro-Oil Pump for hydraulically operated Transfer Case
DE102014217049A1 (en) * 2014-08-27 2016-03-03 Robert Bosch Gmbh Internal gear pump
WO2019174773A1 (en) * 2018-03-13 2019-09-19 Nidec Gpm Gmbh Modular system of an axially integrated pump structure
US20190360484A1 (en) 2018-05-23 2019-11-28 Robert Bosch Gmbh Connection Assembly with Feed Pump and Elastic Element

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2488345A1 (en) * 1980-08-09 1982-02-12 Hartwig Paulsen HEATABLE GEAR PUMP
KR20160004453A (en) * 2014-07-02 2016-01-13 영신정공 주식회사 Electro-Oil Pump for hydraulically operated Transfer Case
DE102014217049A1 (en) * 2014-08-27 2016-03-03 Robert Bosch Gmbh Internal gear pump
WO2019174773A1 (en) * 2018-03-13 2019-09-19 Nidec Gpm Gmbh Modular system of an axially integrated pump structure
US20190360484A1 (en) 2018-05-23 2019-11-28 Robert Bosch Gmbh Connection Assembly with Feed Pump and Elastic Element

Also Published As

Publication number Publication date
EP3992425C0 (en) 2023-07-26
EP3992425B1 (en) 2023-07-26
FR3115840A1 (en) 2022-05-06
FR3115840B1 (en) 2023-03-17

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