EP2610497B1 - Groupe motopompe - Google Patents

Groupe motopompe Download PDF

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Publication number
EP2610497B1
EP2610497B1 EP11195803.9A EP11195803A EP2610497B1 EP 2610497 B1 EP2610497 B1 EP 2610497B1 EP 11195803 A EP11195803 A EP 11195803A EP 2610497 B1 EP2610497 B1 EP 2610497B1
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EP
European Patent Office
Prior art keywords
pump assembly
assembly according
shaped seal
housing
seal
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.)
Active
Application number
EP11195803.9A
Other languages
German (de)
English (en)
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EP2610497A1 (fr
Inventor
Finn Mathiesen Høj
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.)
Grundfos Holdings AS
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Grundfos Holdings AS
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 Grundfos Holdings AS filed Critical Grundfos Holdings AS
Priority to EP11195803.9A priority Critical patent/EP2610497B1/fr
Priority to PL11195803T priority patent/PL2610497T3/pl
Priority to CN201280064633.8A priority patent/CN104011395B/zh
Priority to US14/368,993 priority patent/US9810232B2/en
Priority to PCT/EP2012/075510 priority patent/WO2013098093A1/fr
Publication of EP2610497A1 publication Critical patent/EP2610497A1/fr
Application granted granted Critical
Publication of EP2610497B1 publication Critical patent/EP2610497B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/086—Sealings especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps

Definitions

  • the invention relates to a pump unit according to the preamble of claim 1.
  • pump units such as Bankungsum cilantrolzpumpenaggregate known, which have a stator housing and connected to the stator housing pump housing. Inside the stator housing, a wet-running electric motor is arranged, i. H. the electric motor has a split tube or a split pot, which is arranged between the rotor and the stator and seals the stator space with respect to the rotor space.
  • the can has at its axial end facing the pump housing a radially outwardly extending collar, which seals the stator housing at the interface to the pump housing in the axial direction in this area.
  • an annular shaped seal for example a flat seal
  • US 3,288,073 discloses a pump unit with an electric drive motor designed as a canned motor, wherein the can with respect to the pump housing is sealed by an interposed O-ring. It is not ensured that at the same time a sufficient seal between the collar of the can and the stator is given, so that penetration of moisture into the stator can not be safely excluded.
  • US 3,256,829 discloses another pump unit with an electric drive motor designed as a canned motor.
  • the split tube has a radially outwardly directed collar, which is sealed by a seal against a bearing carrier.
  • the bearing carrier in turn is sealed from the pump housing.
  • the stator housing is filled with a resin. That is, here for secure sealing a potting compound and the arrangement of two seals is required.
  • DE 198 00 302 A1 discloses another pump unit with an electric drive motor designed as a canned motor.
  • an O-ring between a radial collar of the can, which also acts as a bearing carrier, and the pump housing is provided.
  • a seal between the can and the motor housing is not provided.
  • a corresponding embodiment is made DE 38 03 774 A1 . US 3,138,105 . JP 2003-222095 and JP 2001-295797 known.
  • WO 2009/113434 A1 discloses a canned motor in which the can is integrally formed with the motor housing.
  • the motor housing is sealed with an O-ring opposite the pump housing.
  • the pump unit according to the invention has, as known pump units, a stator housing and a pump housing. These are connected to each other and form a structural unit.
  • at least one impeller can be arranged in a known manner, which is driven by a shaft of the arranged in the stator housing electric motor.
  • This electric motor is designed to run wet, ie it has a split tube or a canned pot between its stator and its rotor, which seals the rotor space relative to the stator.
  • the rotor of the electric motor is connected to the shaft driving the impeller.
  • the can has, at its axial end facing the pump housing, a radially outwardly directed collar, which serves to seal against the pump housing.
  • a radially outwardly directed collar which serves to seal against the pump housing.
  • an annular shaped seal is arranged between this collar of the can on one side and the pump housing on the other side. This molded seal prevents liquid from the interior of the pump housing or the can penetrates through the interface between the pump housing and the can.
  • the molded seal has a further sealing function in that, on its side facing away from the pump housing, it rests not only on the gap tube but also on the stator housing.
  • the molded seal can simultaneously seal the stator between the stator housing and the can to the outside.
  • the molded seal thus preferably has three sealing functions, on the one hand it seals off the fluid-filled space of the pump to the outside, on the other hand seals this space from the stator and thirdly seals off the stator to the environment, so that no moisture from outside in the Stator space can penetrate. Since this can be realized so alone with a seal, the manufacture and assembly of the pump unit is significantly simplified.
  • the molded seal is formed such that between the inner circumference of the molded seal and a radially inwardly opposed wall, which is preferably formed on the split tube, in limited peripheral portions free spaces are present.
  • free spaces may be present in limited peripheral sections between the outer circumference of the molded seal and a radially outer wall, which is preferably formed on the pump housing.
  • the free spaces extend only over limited peripheral sections, ie not over the entire circumference.
  • the individual free spaces are thus interrupted by the radially further inwardly projecting portions when the free spaces are formed on the inner circumference of the molded gasket, or from further outwardly projecting portions when the free spaces are formed on the outer periphery of the molded gasket.
  • the free spaces are designed so that the molded seal in axial compression, ie when the can and pump housing are pressed against each other, can expand into the free spaces inside.
  • the molded seal can thus extend to a certain extent transversely to its compression direction, ie substantially in the radial direction, the stresses occurring are reduced, so that overall the forces which are required for the molded seal on the pump housing and on the collar the gap tube to bring the plant to be reduced.
  • the compression of the molded seal is preferably produced by screwing the stator housing and the pump housing.
  • molded seal with the described free spaces could also be carried out independently of the above-described arrangement of the molded seal between the stator housing, the can and the pump housing. That is, a molded gasket with such clearance could also be used when the molded gasket is disposed only between the collar of the can and the pump housing or only between the stator housing and the pump housing.
  • the molded gasket rests in circumferential sections between the free spaces on the opposite wall. Ie. If the free spaces on the inner circumference of the molded seal are formed, the molded seal with its peripheral portions between the free spaces, which project further radially inwardly, on an opposite wall, which may be formed in particular on the split tube, rest. If the free spaces are formed on the outer circumference of the molded seal, the peripheral portions between the free spaces, which project radially outward, correspondingly abut against an outer opposite wall, in particular on a wall formed in the pump housing. So the seal can be positioned and centered in particular.
  • the free spaces on the inner circumference of the molded seal are formed, preferably on the inner circumference of the molded seal distributed over the circumference, in particular evenly distributed over the circumference arranged, radially inwardly directed projections formed, which are located between the free spaces. Ie. These projections separate the free spaces from each other and may possibly come to rest on an opposite wall.
  • a plurality of distributed over the circumference, preferably evenly distributed over the circumference, arranged radially outwardly directed projections on the outer circumference of the molded seal may be formed, between which the free spaces are located. These projections thus limit the free space on the outer circumference.
  • the inner circumference or the outer circumference of the molded seal preferably has a circular basic shape. Ie. Although the free spaces are formed with intermediate projections, the basic shape of the molded gasket is circular. Thus, for example, the projections of a circular basic shape may extend radially inwardly or outwardly to define the free spaces located between the projections on the outer and / or inner circumference.
  • the outer circumference of the molded seal is formed circularly with a peripheral wall free of radial indentations or projections. Ie. In this embodiment, the free spaces are arranged only on the inner circumference of the molded seal. This facilitates the insertion of the seal in the pump housing, if this is previously mounted on the can.
  • the pump housing on its axial side facing the stator housing on an annular system for the molded seal, from which extends in the axial direction of a ring wall, which surrounds the molded seal on its outer periphery.
  • an annular step is formed, whose axial side forms an annular contact surface for the molded seal and their transverse, ie in particular normally extending, annular peripheral wall surrounding the molded seal on its outer circumference.
  • the molded seal is preferably not with its outer circumference at this opposite Ring wall on, but the mold seal is preferably arranged with its outer circumference in the interior of the ring wall with game.
  • the radial clearance between the outer circumference of the molded seal and the surrounding annular wall preferably corresponds approximately to half the radial extent of the free spaces, which are provided on the inner circumference of the molded seal.
  • the centering can be done via a suitable surface on the canned or other components with a defined shape.
  • a clearance between the outer periphery of the mold seal and the surrounding annular wall allows further expansion of the mold seal in the radial direction when the mold seal is compressed in the axial direction.
  • the radial collar of the can adjacent to the stator housing in such a way that a contact surface of the stator housing for the molded seal extends in a plane with a contact surface of the can for the molded seal.
  • annular, axially directed projection is preferably formed on an axial end facing the pump housing, which projection forms the contact surface of the stator housing on the molded seal.
  • the end face of this projection is preferably in a plane with the contact surface of the gap tube for the molded seal, so that they both at the axial end face of the projection as Also can come to the contact surface of the split tube sealingly to the plant.
  • the annular projection preferably extends around the outer circumference of the radial collar of the can and has an axial length which corresponds at least to the thickness of the radial collar of the can. Thus, the projection may extend past the outer circumference of the collar in order to come into sealing contact with the molded seal.
  • the projection may have a radial width which is more than 50 percent of the radial width or wall thickness of the stator housing at the axial end facing the pump housing.
  • the radial collar of the can also be received in a gradation at the axial end of the stator and the surrounding surrounding the gradation remaining wall portion form the axially directed projection.
  • the axial projection on the stator housing makes it possible for a sealing to effect a plurality of sealing functions, namely for the interface between the gap tube and the pump housing relative to the stator space can be sealed, on the other hand, the interface between the can and the pump housing can be sealed to the outside and In addition, the stator can still be sealed to the outside, so that no moisture from the outside can penetrate into the stator.
  • the axially directed projection on the stator housing makes it possible that the contact surface of the stator housing to the seal and the contact surface of the can with the seal can be formed adjacent to each other.
  • the molded gasket could be stepped, to a plant both on the collar of the can as also to allow the stator.
  • the pump housing facing axial side of the stator housing may be formed plan and abut the collar of the can with the planar end edge of the stator housing.
  • the molded gasket could be stepped such that it has a greater thickness on its outer circumference than on its inner circumference, so that the region facing the inner circumference could then come into abutment with the collar of the split tube, while the outer peripheral region of greater thickness is on the outer circumference the collar of the split tubeizoerumblen and could come directly to the axial end face of the stator housing to the plant.
  • the contact surfaces of the can and stator housing are preferably radially adjacent to each other and the molded seal covers an annular gap between the two contact surfaces.
  • the mold seal seals the gap between the can and stator housing to the outside, so that the stator between the can and stator housing is sealed to the outside and no moisture can penetrate from the outside into this room.
  • the molded seal preferably has a rectangular cross-section. Ie.
  • the molded seal has two mutually parallel axial end faces, of which a first comes to rest on the radial collar of the can and optionally the stator housing, while the opposite second axial side sealingly abuts against the pump housing.
  • Such a molded seal may for example be formed as an injection molded part of an elastomer or cut or stamped from a flat material made of elastomer.
  • a bearing support is provided on the gap tube at its axial end facing the pump housing fixed, which carries a bearing for a rotor shaft, wherein the molded seal between the collar of the can and the bearing support is held in the axial direction.
  • the molded seal between the bearing support and the collar can be kept in the axial direction with play, so that they can move to a certain extent.
  • the arrangement makes it possible to attach the molded seal before connecting the stator housing to the pump housing to the split tube and to fix it there with the aid of the bearing support, so that they can not be detached from the split tube. This simplifies assembly.
  • the bearing carrier preferably surrounds the gap tube on the outside and has a shoulder projecting radially outwards, which rests against an axial side of the molded seal. Ie. in the axial direction, the molded seal is held on this shoulder and the contact surface for the molded seal on the can. This contact surface is preferably also provided on a radial projection of the can.
  • the bearing support is plate-shaped and has on its outer circumference an angled, substantially axially extending clamping surface, which engages around the gap tube on its outer circumference.
  • the clamping surface may have clamping projections or annular bulges, which serve a non-positive clamping on the split tube.
  • the bearing carrier may in particular be formed as a formed part of sheet metal.
  • the split tube starting from its open axial end, preferably initially has a radially extending section of the collar, wherein at this section a turn axially, substantially extending parallel to the actual gap tube extending portion which forms a step whose peripheral surface of the bearing carrier engages around.
  • a circumferential projection Starting from this axially extending portion of the collar of the split tube extends radially outwardly a circumferential projection, one axial side of which forms the contact surface for the molded seal.
  • the axially extending portion or the step on the collar of the can is preferably machined so that its outer circumference is centered to the central axis of the can and in this way the bearing support which engages around this area, also to the central axis of the can and thus to the axis of rotation of Rotor of the drive motor is centered.
  • the bearing carrier in turn preferably has on its outer circumference a peripheral contact surface, centered in the pump housing, with respect to its center axis and thus preferably centered with respect to the central axis of the can and the axis of rotation of the rotor.
  • This circumferential contact surface comes to rest on an inner peripheral surface of the pump housing and centers the bearing carrier and thus the can with the bearing carrier connected can and thus the stator disposed on the can with the stator housing relative to the pump housing. This makes a very simple installation possible.
  • stator with the stator housing, the can, the mold seal and the bearing carrier can be pre-assembled and then subsequently attached to the pump housing, wherein the pre-assembled arrangement of the stator and the stator housing is centered on the bearing carrier relative to the pump housing. Subsequently, pump housing and stator housing are screwed in a known manner by extending in the axial direction screws.
  • the circumferential contact surface of the bearing carrier which serves for centering in the pump housing, is preferably a contact surface, which is produced solely by forming a formed from sheet metal bearing support. So can be dispensed with a machining of the bearing carrier, whereby its production is simplified.
  • the clamping surface of the bearing carrier, which rests against the gap tube, and the contact surface, which serves for centering in the pump housing formed by a cross-sectionally s-shaped peripheral wall of the bearing carrier.
  • this peripheral wall which has been described above as extending substantially in the axial direction, has, strictly speaking, an S-shaped cross-section, whereby a radially inwardly directed Klemmwulst is formed, which clampingly on the split tube and in the axially extending portion of Stage comes to rest on the collar of the can, and a radially outwardly directed Klemmwulst which comes to center on an inner surface of the pump housing to the plant.
  • Both clamping beads can be formed by forming a sheet metal part.
  • annular Klemmwülste instead of annular Klemmwülste also limited only on a peripheral region radial bulges can be formed inwardly and outwardly for fixing on the can or for centering in the pump housing. Such bulges are then distributed over the circumference, in particular distributed uniformly over the circumference.
  • the pump unit is preferably a circulating pump unit and in particular designed as a heating pump unit.
  • the pump unit shown in the figures is a Walkerungsumicalzpumpenaggregat and has a pump housing 2, which is provided in a known manner with a suction nozzle 4 and a discharge nozzle 6.
  • an impeller 8 is arranged, which is connected via a rotor shaft 10 with the rotor 12 of an electric motor.
  • the rotor 12 is arranged in the interior of a split tube or canned pot 14, which is circumferentially surrounded by the stator 16 of the electric motor. It is in this embodiment is a wet-running electric motor, d. H. the rotor space in the interior of the canned pot 14 is filled by the liquid to be delivered.
  • the stator 16 is arranged inside a stator housing 18.
  • the stator housing 18 is in the longitudinal direction X, d. H. seen in the direction of the axis of rotation of the rotor 12 screwed at an axial end by means of screws 20 with the pump housing 2.
  • a seal 22 is arranged between the pump housing 2 and the stator housing 18.
  • the seal 22 takes over several sealing functions in this pump unit at the same time.
  • the seal seals on the one hand the pump chamber, in which the fluid to be delivered is located, to the outside and to the other from the stator housing.
  • the seal 22 seals the stator housing to the outside, so that no moisture can penetrate from the outside into the stator housing. This is especially related to the FIGS. 2 to 4 explained in more detail below.
  • the seal 22 is formed as a molded seal with a circular basic shape.
  • the seal 22 has a circular outer periphery 24, which is opposite to an annular wall 26 in the pump housing 2.
  • the outer circumference 24 is spaced from the annular wall 26, so that a free space remains.
  • the inner circumference 28 of the seal 22 also has a circular basic shape.
  • a plurality of radially inwardly directed projections 30 are formed on the inner circumference 28. In the example shown, eight projections 30 are provided which are distributed uniformly over the inner circumference 28. Free spaces 32 are formed between the projections 30.
  • the projections 30 abut with their radially inner vertex areas on the outer circumference of the canned pot 14.
  • the inner circumference 28 of the seal 22 is radially spaced from the outer circumference of the canned pot 14.
  • the clearances 32 serve to allow the seal 22, when compressed in the axial direction X, to expand into the free spaces 32 so that the axial forces acting between the pump housing 2 and the stator housing 18 are reduced.
  • the seal 22 in this embodiment also in the space between the outer periphery 24 and the annular wall 26 extend into it.
  • the radial distance between the outer circumference 24 and the annular wall 26 is in this example, however, only about half as large as the radial distance between the inner circumference 28 and the outer circumference of the canned pot 14 in the region of the free spaces 32nd
  • the canned pot 14 has at its axial end facing the pump housing 2 a radially outwardly extending collar 34, which is bent over its outer circumference twice by 90 °, so that a step with an axial wall 36 and a radially extending end portion 38 is formed becomes.
  • the seal 22 abuts with its projections 30 on the axial wall 36 of the canned pot 14, as in Fig. 4 shown. In the area of the free spaces 32, the inner circumference 28 of the seal 22 is spaced from the axial wall 36.
  • the end region 38 forms a contact surface, which rests sealingly on an axial side of the seal 22.
  • the end portion 38 is circumferentially surrounded by a projection 40 which projects from the axial end of the stator housing 18.
  • the axial height of the projection 40 substantially corresponds to the thickness of the end portion 38 of the canned pot 14.
  • the axial end face of the projection 40 forms a contact surface and is also on the axial side of the seal 22 sealingly.
  • the axial end face of the projection 40 and the abutment surface on the end region 38 of the canned pot 14 substantially in a plane transverse to the longitudinal or to the axis of rotation X radially adjacent to sealingly against the seal 22 at.
  • the gap between the end portion 38 of the canned pot 14 and the projection 40 of the stator housing is covered by the seal 22 and sealed, so that no moisture can penetrate through this gap from the outside into the interior of the stator housing.
  • the seal 22 bears against an annular contact surface 42 on the axial end face of the pump housing 2.
  • the axial bearing surface 42 is surrounded by the annular wall 26.
  • the contact surface 42 and the annular wall 26 thus form an annular step in the interior of the pump housing 2 for receiving the seal 22.
  • the seal 22 is compressed in the axial direction, which in the Figures 3 and 4 is indicated schematically by the overlap of the seal 22 with the contact surface 42. Due to the tight contact of the seal 22 on the contact surface 42 of the gap between the canned pot 14 and its end portion 38 and the pump housing 2 is sealed by the seal 22.
  • the pump chamber, in which the impeller 8 is arranged, as well as the interior of the canned pot 14, in which also the liquid to be conveyed is sealed to the outside.
  • the seal 22 also ensures that the interior of the stator housing 18 is sealed outside the canned pot 14 with respect to the pump chamber, in which the impeller 8 is arranged, so that the liquid to be conveyed can not penetrate into the interior of the stator housing 18.
  • the pump housing 2 should not come directly to the stator housing 18 at the axial end to the plant, but both the pump housing 2 and the stator 18 are initially only at the opposite axial sides of the seal 22 and only after compression of the seal 22, the axial end of the stator housing 18 and the pump housing 2 come into contact.
  • This dimensioning of the seal 22 is achieved that it is always first compressed in the axial direction, so that always ensures a tight contact with the contact surface 42 on one side and the contact surface on the end portion 38 and the axial side of the projection 40 on the opposite side is.
  • a permanent tight contact of the seal 22 is achieved.
  • the seal 22 is held on the canned pot 14, ie in the peripheral region of the axial wall 36 between the end portion 38 and a radially extending shoulder 44 of a bearing plate 46.
  • the bearing plate 46 is formed from sheet metal and carries in its central region a bearing 48 for the rotor shaft 10.
  • the bearing plate 46 is disc-shaped with a substantially circular outer periphery, wherein it has a substantially axially extending peripheral wall 50 in the vicinity of its outer periphery, which the axial wall 36 of the canned pot 14 surrounds the outer circumference.
  • the end portion of the peripheral wall 50 is bent radially outward in the form of the shoulder 44.
  • the entire bearing carrier or the entire bearing plate 46 is formed as a formed part of sheet metal.
  • the peripheral wall 40 has on its inner circumference radially inwardly directed projections 52, which form clamping surfaces which come to the outer periphery of the axial wall 36 of the canned pot 14 by clamping.
  • a plurality of evenly distributed over the circumference projections 52 are provided on the peripheral wall 50 to clamp the bearing plate 46 on the canned pot 14 and at the same time to center the bearing plate 46 on the canned pot 14.
  • a plurality of individual projections 52 and a single annular projection could be formed in the periphery of the peripheral wall 50 for clamping on the axial wall 36.
  • the axial wall 36 is machined on its outer periphery, in particular turned off or ground to center this outer side of the axial wall 36 with respect to the central or longitudinal axis X.
  • the bearing plate 46 is formed by forming so that the inner sides of the projections 52 are arranged centered. Thus, the entire bearing plate 46 centered to the split tube 14 can be attached to this.
  • the circumferential wall 50 On the outer circumference, the circumferential wall 50 axially spaced from the projections 52 radially outwardly directed projections 54, which serve to center the bearing plate 46 in the interior of the pump housing 2.
  • the radially outwardly directed projections 54 come with a circular cylindrical inner surface 56 of the pump housing 2 to the plant, the inner surface 56 is also substantially centered about the axis of rotation X.
  • the projections 54 may also be formed as a single circumferentially distributed projections or as a continuous radially outwardly directed projection 54. Also, the projection 54 is created solely by deformation of the sheet, which forms the bearing plate 46.
  • the stator 16 is arranged with the canned pot 14 in the interior of the stator housing 18.
  • the seal 22 is thereby arranged on the outer circumference of the axial wall 36 of the canned pot 14 and then the bearing plate 46 is placed on the outer circumference of the axial wall 36 and clamped there.
  • the seal 22 between the end portion 38 of the canned pot 14 and the shoulder 44 of the bearing plate 46 is held in the axial direction. This need not be free of play, but rather it is preferred that a clearance is provided in this area in the axial direction, so that the seal 22 between the shoulder 44 and the end portion 38 is not compressed.
  • stator in the stator housing 18 is then attached axially to the pump housing 2 with the rotor 12 and the impeller 8 arranged therein.
  • the bearing plate 46 enters with its projections 54 on the outer circumference in the area spanned by the inner surface 56 and the projections 54 center the entire stator with the stator housing and the canned pot 14 to the pump housing 2.
  • pump housing 2 and stator 18 are on the screws 20 screwed together, wherein the seal 22, as described above, is compressed and thus comes into sealing contact with the contact surface 42, the end face of the projection 40 and the axial side of the end portion 38.

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  • General Engineering & Computer Science (AREA)
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Claims (20)

  1. Groupe motopompe avec un carter de stator (18) à l'intérieur duquel est disposé un moteur électrique à fonctionnement à l'état humide avec une gaine (14), et avec un carter de pompe (2) attaché au carter de stator (18), caractérisé en ce qu'un joint d'étanchéité de forme (22) ayant une forme annulaire est disposé entre le carter de stator (18) et un collet radial (34) de la gaine (14) d'un côté et le carte de pompe (2) de l'autre côté, le joint d'étanchéité de forme étant en appui, sur son côté éloigné du carter de pompe, sur la gaine (14) et sur le carter de stator (18).
  2. Groupe motopompe selon la revendication 1, caractérisé en ce que des espaces libres (32) sont disponibles, dans des zones de pourtour limitées, entre le pourtour intérieur (28) du joint d'étanchéité de forme (22) et une paroi (36) en regard radialement vers l'intérieur et/ou entre le pourtour extérieur (24) du joint d'étanchéité de forme (22) et une paroi (26) en regard radialement vers l'extérieur, lesquels espaces sont formés de façon que le joint d'étanchéité de forme (22) puisse s'étendre dans les espaces libres (32) lors d'une compression axiale.
  3. Groupe motopompe selon la revendication 2, caractérisé en ce que le joint d'étanchéité de forme (22) est en appui sur la paroi (36) en regard, dans des zones de pourtour (30) entre les espaces libres (32).
  4. Groupe motopompe selon la revendication 2 ou 3, caractérisé en ce que plusieurs proéminences (30) orientées radialement vers l'intérieur et répartis sur le pourtour, sont formées sur le pourtour intérieur (28) du joint d'étanchéité de forme, entre lesquelles sont situés les espaces libres (32).
  5. Groupe motopompe selon l'une des revendications 2 à 4, caractérisé en ce que plusieurs proéminences orientées radialement vers l'extérieur et répartis sur le pourtour, sont formées sur le pourtour extérieur (24) du joint d'étanchéité de forme (22), entre lesquelles sont situés les espaces libres.
  6. Groupe motopompe selon l'une des revendications 2 à 5, caractérisé en ce que le pourtour intérieur (28) et/ou le pourtour extérieur (24) du joint d'étanchéité de forme (22) présente une forme de base circulaire.
  7. Groupe motopompe selon l'une des revendications 2 à 4, caractérisé en ce que le pourtour extérieur (24) du joint d'étanchéité de forme (22) est formé de façon circulaire avec une paroi de pourtour exempte d'enfoncements ou de proéminences radiales.
  8. Groupe motopompe selon l'une des revendications précédentes, caractérisé en ce que le carter de pompe (2) comprend, sur son côté axial orienté vers le carter de stator (18), une surface d'appui annulaire (42) pour le joint d'étanchéité de forme (22), à partir de laquelle une paroi annulaire (26) s'étend dans la direction axiale et entoure le joint d'étanchéité de forme (22) sur le pourtour extérieur (24) de celui-ci.
  9. Groupe motopompe selon la revendication 8, caractérisé en ce que le joint d'étanchéité de forme (22) est disposé avec son pourtour extérieur (24) avec jeu à l'intérieur de la paroi annulaire (26).
  10. Groupe motopompe selon l'une des revendications précédentes, caractérisé en ce que le collet radial (34) de la gaine (14) est adjacent au carter de stator (18) de façon qu'une surface d'appui du carter de stator pour le joint d'étanchéité de forme (22) s'étende dans un même plan avec une surface d'appui de la gaine (14) pour le joint d'étanchéité de forme (22).
  11. Groupe motopompe selon l'une des revendications précédentes, caractérisé en ce qu'une proéminence (40) annulaire orientée dans la direction axiale est formée sur le carter de stator (18) à une extrémité axiale orientée vers le carter de pompe (2), laquelle forme la surface d'appui du carter de stator (18) sur le joint d'étanchéité de forme (22).
  12. Groupe motopompe selon la revendication 10 ou 11, caractérisé en ce que les surfaces d'appui de la gaine (14) et du carter de stator (18) sont adjacentes radialement et que le joint d'étanchéité de forme (22) recouvre une fente annulaire entre les deux surfaces d'appui.
  13. Groupe motopompe selon l'une des revendications précédentes, caractérisé en ce que le joint d'étanchéité de forme (22) présente une section transversale rectangulaire.
  14. Groupe motopompe selon l'une des revendications précédentes, caractérisé en ce qu'un support de palier (46) est fixé à la gaine (14) à l'extrémité axiale de celle-ci orientée vers le carter de pompe (2), qui porte un palier (48) pour un arbre de rotor (10), le joint d'étanchéité de forme (22) étant maintenu en direction axiale (X) entre le collet (34, 38) de la gaine (14) et le support de palier (46).
  15. Groupe motopompe selon la revendication 14, caractérisé en ce que le support de palier (46) entoure la gaine (14) sur le pourtour extérieur de celui-ci et comprend un épaulement (44) en proéminence radiale vers l'extérieur qui est adjacent à un côté axial du joint d'étanchéité de forme (22).
  16. Groupe motopompe selon la revendication 14 ou 15, caractérisé en ce que le support de palier (46) est formé à la façon d'une plaque et comprend sur son pourtour extérieur une surface de serrage (50, 52) coudée s'étendant axialement qui saisit la gaine (14) sur le pourtour extérieur (36) de celle-ci.
  17. Groupe motopompe selon la revendication 16, caractérisé en ce que le support de palier (46) comprend sur son pourtour extérieur une surface d'appui (54) centrée par rapport à son axe centrale (X) qui sert au centrage dans le carter de pompe (2).
  18. Groupe motopompe selon la revendication 17, caractérisé en ce que la surface de serrage (52) du support de palier (46), qui est en appui sur la gaine (14), et la surface d'appui (54), qui sert au centrage dans le carter de pompe, sont formées par une paroi de pourtour (50) du support de palier (46) pliée, en section transversale, en forme d'un s.
  19. Groupe motopompe selon l'une des revendications 15 à 18, caractérisé en ce que la gaine (14) comprend à son collet radial (34) un étagement (36, 38) dont la surface de pourtour (36) entoure le support de palier (46).
  20. Groupe motopompe selon l'une des revendications précédentes, caractérisé en ce qu'il est conformé comme groupe motopompe de refoulement et notamment comme groupe motopompe de refoulement de chauffage.
EP11195803.9A 2011-12-27 2011-12-27 Groupe motopompe Active EP2610497B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP11195803.9A EP2610497B1 (fr) 2011-12-27 2011-12-27 Groupe motopompe
PL11195803T PL2610497T3 (pl) 2011-12-27 2011-12-27 Agregat pompowy
CN201280064633.8A CN104011395B (zh) 2011-12-27 2012-12-14 泵机组
US14/368,993 US9810232B2 (en) 2011-12-27 2012-12-14 Pump unit
PCT/EP2012/075510 WO2013098093A1 (fr) 2011-12-27 2012-12-14 Groupe motopompe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11195803.9A EP2610497B1 (fr) 2011-12-27 2011-12-27 Groupe motopompe

Publications (2)

Publication Number Publication Date
EP2610497A1 EP2610497A1 (fr) 2013-07-03
EP2610497B1 true EP2610497B1 (fr) 2016-11-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP11195803.9A Active EP2610497B1 (fr) 2011-12-27 2011-12-27 Groupe motopompe

Country Status (5)

Country Link
US (1) US9810232B2 (fr)
EP (1) EP2610497B1 (fr)
CN (1) CN104011395B (fr)
PL (1) PL2610497T3 (fr)
WO (1) WO2013098093A1 (fr)

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Publication number Priority date Publication date Assignee Title
DE102013017976A1 (de) * 2013-11-29 2015-06-03 Fte Automotive Gmbh Elektromotorisch angetriebene Flüssigkeitspumpe, insbesondere zur Zwangsschmierung eines Schaltgetriebes für Kraftfahrzeuge
EP3382206B1 (fr) 2017-03-31 2020-12-16 Grundfos Holding A/S Ensemble de pompe
EP3667090B1 (fr) * 2018-12-13 2021-07-07 Grundfos Holding A/S Ensemble de pompe
EP3667091B1 (fr) * 2018-12-13 2021-08-18 Grundfos Holding A/S Ensemble de pompe
EP3667092B1 (fr) * 2018-12-13 2021-08-18 Grundfos Holding A/S Ensemble de pompe
EP3667099A1 (fr) * 2018-12-13 2020-06-17 Grundfos Holding A/S Ensemble de pompe
DE102019130723A1 (de) * 2019-11-14 2021-05-20 Fte Automotive Gmbh Flüssigkeitspumpe
KR20220107277A (ko) * 2020-01-09 2022-08-02 게이츠 코포레이션 축방향 자속 모터를 위한 영구자석 회전자
DE102020121421A1 (de) * 2020-08-14 2022-02-17 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Elektrische Maschine
US11661913B2 (en) * 2021-05-17 2023-05-30 Delphi Technologies Ip Limited Fuel pump with inlet valve assembly
CN216789224U (zh) * 2021-11-12 2022-06-21 深圳市嘉禾云帆科技有限公司 防水环组件、防水密封装置和外转子式设备

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US3138105A (en) * 1961-02-08 1964-06-23 Fostoria Corp Motor driven pumps
US3256829A (en) * 1963-10-24 1966-06-21 Schneider Peter Pump and motor assembly
US3288073A (en) * 1964-12-01 1966-11-29 Pall Corp Canned pump having reduced hydraulic thrust
NO133599L (fr) * 1967-09-20
EG14645A (en) * 1977-07-21 1985-03-31 Kubota Ltd Methode of fitting sealing member into pipe joint
DE3803774A1 (de) * 1988-02-09 1989-08-17 Grundfos Int Pumpenaggregat fuer heizungsanlagen
DE19800302A1 (de) * 1998-01-07 1999-07-08 Wilo Gmbh Kreiselmotorpumpe mit Gleitringdichtung
US6409175B1 (en) * 1999-07-13 2002-06-25 Grant Prideco, Inc. Expandable joint connector
JP4774574B2 (ja) * 2000-04-17 2011-09-14 パナソニック電工株式会社 ポンプ
CN2480588Y (zh) 2001-06-12 2002-03-06 浙江西山泵业有限公司 安全磁力增压泵
JP4109872B2 (ja) * 2002-01-30 2008-07-02 カルソニックカンセイ株式会社 キャンドポンプ
GB2417981A (en) * 2004-09-14 2006-03-15 Dana Automotive Ltd Sealing arrangement for a canned motor pump
JP2009221942A (ja) * 2008-03-14 2009-10-01 Panasonic Electric Works Co Ltd ポンプ

Also Published As

Publication number Publication date
US9810232B2 (en) 2017-11-07
CN104011395A (zh) 2014-08-27
US20140377103A1 (en) 2014-12-25
WO2013098093A1 (fr) 2013-07-04
CN104011395B (zh) 2017-07-14
PL2610497T3 (pl) 2017-06-30
EP2610497A1 (fr) 2013-07-03

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