EP2236839A1 - Agrégat de pompe centrifuge - Google Patents

Agrégat de pompe centrifuge Download PDF

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Publication number
EP2236839A1
EP2236839A1 EP09005021A EP09005021A EP2236839A1 EP 2236839 A1 EP2236839 A1 EP 2236839A1 EP 09005021 A EP09005021 A EP 09005021A EP 09005021 A EP09005021 A EP 09005021A EP 2236839 A1 EP2236839 A1 EP 2236839A1
Authority
EP
European Patent Office
Prior art keywords
housing
centrifugal pump
inner housing
outer housing
pump assembly
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
EP09005021A
Other languages
German (de)
English (en)
Other versions
EP2236839B1 (fr
Inventor
Steen Mikkelsen
Rikke Z. Hansen
Uffe Staehr
Brian Lundsted Poulsen
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 Management AS
Original Assignee
Grundfos Management 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 Management AS filed Critical Grundfos Management AS
Priority to EP09005021.2A priority Critical patent/EP2236839B1/fr
Publication of EP2236839A1 publication Critical patent/EP2236839A1/fr
Application granted granted Critical
Publication of EP2236839B1 publication Critical patent/EP2236839B1/fr
Not-in-force 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
    • F04D29/5893—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps heat insulation or conduction
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F04D29/4286—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps inside lining, e.g. rubber
    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/40—Organic materials
    • F05D2300/43—Synthetic polymers, e.g. plastics; Rubber

Definitions

  • the invention relates to a centrifugal pump unit.
  • Centrifugal pump units are used in many areas for the promotion of liquids, especially water, for example as heating circulation pumps.
  • Known centrifugal pump units usually have a pump housing made of metal, which is designed as a casting.
  • molded parts made of a foam material are adapted to the outer contour of the pump housing and enclose the pump housing from the outside.
  • this insulation layer can be outwardly clad, for example, by a plastic shell, which gives the pump unit an appealing appearance.
  • the centrifugal pump unit has a pump housing.
  • this pump housing In this pump housing, the flow paths for the medium to be delivered, in particular a liquid to be conveyed are formed.
  • one or more impellers are arranged in a known manner, which promote the medium.
  • a motor or stator housing may be attached, in which an electric motor for driving the impeller is arranged.
  • the pump housing is designed in several parts. It initially has an inner housing made of plastic. This is formed fluid-tight and defined in its interior, the flow paths for the medium or fluid to be delivered.
  • the design of the inner housing made of plastic allows cost-effective production.
  • the flow paths can be made with greater degrees of freedom and precision than in metal casting, so that the flow paths can be designed in an optimized manner.
  • the inner housing thus houses all flow channels or parts and seals the flow paths to the outside. On its outer side, the inner housing is surrounded by a thermal insulation layer, which thermally insulates the inner housing and thus the flow-leading parts to the outside.
  • an outer housing which faces away from the insulating layer on its outer side, that is, the inner housing Surrounds page.
  • This outer housing is designed to be load-bearing, so that it can absorb the forces occurring in the pump housing and acting on the pump housing. These are in particular the pressure forces occurring in the inner housing due to the fluid to be delivered. These forces are transmitted from the inner housing to the outer housing and received by the outer housing.
  • the wall thicknesses can be reduced, whereby the material costs can be reduced and, on the other hand, greater freedom is given in the design of the flow paths in the inner housing.
  • the inner housing thus has the primary task of defining the flow paths and sealing off to the outside.
  • a stator or motor housing is connected to the supporting outer housing, so that no forces are transmitted to the inner pump housing of this.
  • the outer housing may also be formed of plastic, wherein the housing is dimensioned so that the forces occurring can be absorbed or transmitted by the housing, without causing damage or undesirable deformation of the housing.
  • the outer housing is particularly preferably at least partially, ideally made entirely of metal.
  • the outer housing can be made as a casting of metal or z. B. be formed from sheet metal.
  • the formation of the outer housing made of metal is much easier than that Forming the inner housing, since it does not have to have such complex shapes as the flow channels in the interior of the inner housing. In this respect, the production is much easier and cheaper.
  • the outer metal housing compared to the outer plastic housing has the advantage that it forms a resistant housing of the pump unit to the outside, so that it is protected against damage, especially during installation and transport. In particular, the insulation layer is protected to the outside.
  • the outer housing may be formed of aluminum.
  • the inner housing is preferably made as an injection molded part. In injection molding, even complicated shapes can be inexpensively formed from plastic. In addition, high surface qualities can be achieved, which is particularly advantageous for the flow paths in the interior of the inner housing.
  • the inner housing is made of a composite material, in particular of a fiber-reinforced plastic.
  • a plastic has a high strength.
  • sufficient strength can be realized with comparatively thin wall thicknesses.
  • a sufficient compressive strength against the pressure prevailing in the interior of the inner housing fluid pressures can be realized.
  • such a fiber-reinforced plastic can also be processed by injection molding in the manner described above.
  • the inner housing, the insulating layer and / or the outer housing is in each case composed of several parts.
  • the inner housing can be composed of several parts to the cavities formed inside for the flow paths without cores, in particular to be able to train lost cores cost.
  • first of all a plurality of individual parts of the inner housing for example, be manufactured as injection molded parts and then connected to each other. The connection can be done for example by welding or gluing or in another suitable manner, for example, non-positively or positively.
  • a fluid-tight connection between the parts is preferably created so that the interior spaces of the inner housing, which are bounded outwards by the parts, are sealed to the outside in a fluid-tight manner.
  • the insulating layer may also be formed from a plurality of individual parts, in particular moldings, which are attached from the outside to the inner housing in order to enclose this.
  • the design of several parts a simple assembly of prefabricated items is possible.
  • the outer housing which may be formed of several parts or shells, which are placed from the outside around the inner housing with the adjacent insulating layer to enclose them.
  • the individual parts of the outer housing can be mechanically connected to one another in a suitable manner, for example screwed or in other suitable manner non-positively and / or positively engaged with each other.
  • the outer housing thus arranged can then simultaneously hold together the several individual parts of the insulating layer, so that they do not require individual mechanical connections.
  • the insulating layer is preferably also made of plastic, in particular in the form of a foam material. These may be conventional insulation materials available on the market. In particular, they are preferably materials from which prefabricated Moldings can be made, which can be applied from the outside to the inner housing.
  • the insulating layer may be formed of a material which is injected into a space defined between the inner and outer housing.
  • the outer housing can be placed around the inner housing, wherein the inner and outer housings are designed so that a space remains between them.
  • the material for the insulation layer can then be injected into the free space and distributed there.
  • the free space can be foamed up.
  • the insulation layer can be formed very inexpensively, since a separate shaping of individual parts for the insulation layer is not required.
  • At least one support element for transmitting power from the inner housing to the outer housing is arranged between the inner housing and the outer housing. Due to the pressure caused by the fluid inside the inner casing, the inner casing tends to expand outwardly. This can counteract support elements between the outer and inner housing by transmitting outwardly directed forces from the inner housing to the outer housing, wherein the outer housing itself is formed so dimensionally stable that it can absorb the transmitted forces.
  • a plurality or a plurality of support elements are provided, which are arranged distributed over the outer surface of the inner housing, so that forces can be transmitted in all directions to the outer housing. In this way, the inner housing can be relieved in all areas of the forces generated by the internal pressure.
  • the at least one support element preferably rests on the outer housing and / or is formed as part of the outer housing. That is, the support member is preferably on the inside of the outer housing so that forces can be transmitted from the support member to the outer housing. It is possible that the support element or a part of the support element is made as part of the outer housing, in particular integrally formed therewith. In particular, when the outer housing is manufactured as a casting, it is easily possible to cast such support elements with.
  • the at least one support element rest against the inner housing and / or be formed as part of the inner housing.
  • the support member may be integrally formed with the inner housing or fixedly connected thereto.
  • the support element may be formed together with the inner housing as a casting, in particular as an injection molded part made of plastic.
  • the support members may also be formed so as to be formed of two sections, one part fixedly formed on the inner housing and one fixed to the outer housing, both parts engaging each other for power transmission when the outer housing is mounted to the inner housing is.
  • the at least one support element is designed as a rib, which extends transversely, preferably substantially normal to the outer surface of the inner housing and / or to the inner surface of the outer housing.
  • the rib thus extends from the inner housing substantially in the radial direction to the outer housing and can transmit the outwardly directed pressure forces, which are caused by the internal pressure in the inner housing, directly in the direction of action of the forces on the outer housing. In this way undesirable moments in the housing structure are avoided.
  • At least two support elements formed as a rib are present, which extend in two mutually non-parallel planes. This makes it possible that forces which are transmitted in the longitudinal direction of the ribs can be transmitted in different spatial directions from the fin housing to the outer housing. Thus, preferably, all pressure forces caused by the internal pressure in the inner housing can be dissipated to the outer housing so that it does not come to deformations or damage to the inner housing.
  • At least one support element may have at least one elastic section.
  • This embodiment allows for an elastic deformation of the support element.
  • the support elements can absorb minor deformations during operation of the pump without damage.
  • they allow a backlash-free assembly between the inner and outer housing.
  • the support elements are preferably formed of a heat-insulating material to prevent unwanted heat transfer from the inner housing to the outer housing.
  • the support elements of a plastic material, which is poorly thermally conductive, are formed. This may further preferably be the same material from which the inner housing is formed.
  • the outer housing is preferably well thermally conductive, in particular made of metal. In this way, especially when used as a cold water pump condensation on the outer casing can be prevented.
  • the inner housing has at least one replaceable connecting flange.
  • the means, the connection of the flange is formed as a separate component and preferably releasably connected to the inner housing. This makes it possible to easily replace the connection flange, in order to allow the connection of the inner housing to different mating flange of subsequent piping. In this way it is avoided that different inner housing and different pump units must be provided for different connections, but only the connection flanges can be replaced depending on the required mounting.
  • the pump housing has at least one connection flange tightly connected to the inner housing, which is in engagement with the outer housing in engagement.
  • the connection flange is so tightly connected to the inner housing that an outwardly sealed flow path through the connection flange is provided through the inner housing.
  • the connection flange is engaged or connected to the outer housing in such a way that forces acting on the connection flange are transmitted to the outer housing and thus the load on the inner housing can be prevented in the case of externally acting forces. It is thus created a bearing connection between the outer housing and flange.
  • a stator housing or electric motor is preferably connected to the outer housing so that the outer housing bears the weight of the stator housing or of the electric motor and thus the inner housing is kept largely free from external forces.
  • the stator housing or a part of the stator housing may also be formed integrally with at least a part of the outer housing.
  • Fig. 1 shows a first embodiment of a centrifugal pump assembly according to the invention.
  • the centrifugal pump assembly has a pump housing 2 with axially attached connection flanges 4.
  • a motor or stator housing 6 is inserted laterally into the pump housing 2.
  • the connecting flanges 4 are interchangeable designed so that different connection flanges 4 can be used with the pump housing 2.
  • the centrifugal pump unit can be adapted to different mating flange only by replacing the connection flanges, without having to replace or change the pump housing 2 itself.
  • the pump housing 2 has an inner housing 8, which has flow paths 10 for a fluid or medium to be delivered by the centrifugal pump assembly.
  • a pump chamber 12 is formed, in which a, not shown here, impeller is arranged.
  • the impeller is driven in a known manner by an electric motor arranged in the stator housing 6.
  • the inner housing 8 is fluid-tight as an injection molded part made of plastic, preferably fiber-reinforced plastic.
  • the pump housing can be manufactured, for example, as an injection molded part.
  • the inner housing 8 is surrounded by an outer housing 14.
  • the outer housing 14 is preferably formed of metal and gives the pump housing 2, the mechanical strength, which does not have the inner plastic housing alone.
  • an insulating layer is arranged in the form of an insulating body. This consists for example of a foamed plastic.
  • the support elements 18 are formed in the example shown as parallel ribs. In this case, the support elements 18 are formed in the example shown here as a separate support body, which is inserted between the inner housing 8 and the outer housing 14.
  • the support members 18 could also be formed integrally with the inner housing 8 or the outer housing 14.
  • the flanges 4, as well as the stator housing 6 are mechanically connected directly to the outer housing 14, so that a power transmission directly to the outer housing 14 is possible, and the outer housing 14 preferably absorbs all significant forces.
  • the inner housing 8 can be relieved. This makes it possible to form the inner housing 8 thin-walled, so that the inner housing 8 can be shaped in such a way that primarily the flow paths 10 can be optimized to improve the flow guidance.
  • the outer housing 14 is composed of 2 cup-shaped parts 14a and 14b. These shells can be easily formed as castings, for example made of aluminum. It is preferred that the outer housing is made of a good heat-conducting material, ie preferably metal. Thus it can be achieved that the outer housing 14 due to the underlying insulating 16 easily assumes the ambient temperature, so that in the promotion of cold media condensation of water on the outer casing can be prevented. Also, the insulation body 16 is composed of two parts 16a and 16b, which are formed in a half-shell shape. Thus, the parts 16a and 16b enclose the inner housing 8. Due to the shared design of the insulating body, this is also inexpensive to manufacture and easy to install.
  • the parts 14 a and 14 b of the outer housing 14 are preferably held together by screws or bolts which extend through the insulating body 16, but are not connected to the inner housing 8.
  • the insulating body 16 is fixed between the inner housing 8 and the outer housing 14.
  • the stator housing 6 can be connected by screws or bolts to the part 14 a of the outer housing 14.
  • the support members 18 extend in columns in the parts 16 a and 16 b of the insulator 16.
  • the support members 18 may be used as a separate component in the form of a support body, in which all support elements 18 are connected to each other, or be formed integrally with the inner housing 8.
  • the support elements 18 are preferably also formed of plastic, so that they act thermally insulating and avoid heat transfer between the inner housing 8 and the outer housing 14 as possible. Nevertheless, the support elements 18 abut both the inner housing 8 and on the inside of the outer housing 14 in order to enable a power transmission.
  • the inner housing 8 may be composed of two parts to simplify the production.
  • the inner housing 8 may be divided along the plane 20, so that the two parts of the inner housing 8 may preferably be manufactured without undercuts by injection molding. Subsequently, the two parts can be connected to one another, for example, welded together along the dividing plane 20.
  • Fig. 4 shows a further embodiment of the invention, similar to the embodiment in Fig. 3 ,
  • the embodiment corresponds essentially to the basis of Fig. 1 to 3 described embodiment, but differs in some points described below.
  • the rib-shaped support elements 18 not all parallel to each other but in mutually angled planes.
  • the inner housing 8 is here along a different dividing plane 20 'divided. That is, the inner housing 8 is made of two parts, which are welded together along the dividing plane 20 '.
  • the stator housing 6 is integrally formed with the part 14 a of the outer housing 4.
  • the outer casing 14 is formed of two parts, and in this embodiment, the two parts do not abut on a plane plane but are divided along a stepped dividing line 22 ,
  • the flanges 4 are in the embodiment according to Fig. 5 differently shaped in their shape.
  • the flanges can be designed accordingly, or in the embodiment according to Fig. 5 the flanges could be designed according to the first embodiment.
  • a part of the stator housing 6 is integrally formed with the part 14 a of the outer housing.
  • the insulating layer 16 ' may be injected into a cavity between the outer casing 14 (14a, 14b) and the inner casing 8.
  • the inner housing 8 is also composed of several parts here. The two parts are joined together along the dividing line 24, for example welded together tightly.
  • the flanges 4 are also here with the outer housing 14 into engagement, so that a power transmission from the flanges directly to the outer housing is possible.
  • web-shaped or rib-shaped support elements 18 are also provided in this embodiment between the inner housing 8 and the outer housing 14, which sections are integrally formed either with the inner housing 8 or the outer housing 14. The individual sections abut each other for power transmission, so that the support elements 18 are in communication with or in contact with both the inner housing 8 and the outer housing 14.
  • the support elements 18 are grid-shaped or honeycomb-shaped in Fig. 7 the lattice structure of the support elements 18 "is honeycomb-shaped and is preferably formed as a composite material as part of the inner housing 8.
  • the support elements 18 are formed integrally with the outer housing 14, preferably as a metal structure.”
  • the cavities 25 in the lattice structure of the support element 18 can additionally be foamed with an insulating material.
  • the support elements 18 are not in direct contact with the inner housing 8, but that the inner housing 8 is first by a in Fig.
  • insulating layer or an insulating body is sheathed, on the outside of the support body 18 "or the lattice structure of the support body 18" comes to rest.
  • This insulating body can also be produced in one piece with the foaming of the cavities 25.
  • the support elements 18 "in the form of a grid or honeycomb structure are so stiff that forces can be reliably transmitted from the inner housing 8 to the outer housing 14.
  • the walls of the honeycombs preferably extend substantially perpendicular to the inner surface of the outer housing 14 or The outer surface of the inner housing 8.
  • the walls of the honeycomb structure extend substantially in the direction of force of the forces to be transmitted Fig. 8 the outer housing 14 is formed divided.
  • the division line 26 is similar to the dividing line 22 in FIG Fig. 5 ,
  • the flanges are formed so that they are positively engaged with the outer housing 14, so that forces from the flanges 4 directly to the outer housing 4 can be transmitted.
  • the outer housing 14 engages with a projection in a circumferential groove 28 of the flange 4 a.
  • a part of the stator housing 6 is formed integrally with the outer housing 14.
  • the remaining features of the embodiments according to Fig. 7 and 8th correspond to the above-mentioned embodiments.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP09005021.2A 2009-04-04 2009-04-04 Agrégat de pompe centrifuge Not-in-force EP2236839B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09005021.2A EP2236839B1 (fr) 2009-04-04 2009-04-04 Agrégat de pompe centrifuge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09005021.2A EP2236839B1 (fr) 2009-04-04 2009-04-04 Agrégat de pompe centrifuge

Publications (2)

Publication Number Publication Date
EP2236839A1 true EP2236839A1 (fr) 2010-10-06
EP2236839B1 EP2236839B1 (fr) 2013-11-13

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2813711A1 (fr) * 2013-06-13 2014-12-17 Johnson Electric S.A. Pompe de circulation
WO2015082679A1 (fr) * 2013-12-06 2015-06-11 Ksb Aktiengesellschaft Carter de pompe en matière plastique possédant une coque intérieure, une coque extérieure et une matière de remplissage entre celles-ci
WO2022023266A1 (fr) * 2020-07-28 2022-02-03 KSB SE & Co. KGaA Boîtier pour éléments de guidage de flux
LU503228B1 (de) * 2022-12-21 2024-06-21 Wilo Se Doppelpumpe mit Isolierverkleidung und zugehöriges Montageverfahren

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110043508A (zh) * 2019-04-01 2019-07-23 重庆西泉泵业股份有限公司 一种具有双副叶轮的填充型高温泵

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2976809A (en) 1954-08-11 1961-03-28 Buschhorn Walther Centrifugal pump and method of its production
DE3011888A1 (de) 1980-03-27 1981-10-01 Richard 7066 Baltmannsweiler Halm Kreiselpumpe
DE3109624A1 (de) 1981-03-13 1982-10-14 Wilo-Werk Gmbh & Co Pumpen- Und Apparatebau, 4600 Dortmund Umwaelzpumpe
EP0849473A1 (fr) 1996-12-21 1998-06-24 KSB Aktiengesellschaft Cater de pompe centrifuge
EP1079115A2 (fr) 1999-08-24 2001-02-28 WILO GmbH Carter de pompe en plastique

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2976809A (en) 1954-08-11 1961-03-28 Buschhorn Walther Centrifugal pump and method of its production
DE3011888A1 (de) 1980-03-27 1981-10-01 Richard 7066 Baltmannsweiler Halm Kreiselpumpe
DE3109624A1 (de) 1981-03-13 1982-10-14 Wilo-Werk Gmbh & Co Pumpen- Und Apparatebau, 4600 Dortmund Umwaelzpumpe
EP0849473A1 (fr) 1996-12-21 1998-06-24 KSB Aktiengesellschaft Cater de pompe centrifuge
EP1079115A2 (fr) 1999-08-24 2001-02-28 WILO GmbH Carter de pompe en plastique

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2813711A1 (fr) * 2013-06-13 2014-12-17 Johnson Electric S.A. Pompe de circulation
JP2015007423A (ja) * 2013-06-13 2015-01-15 ジョンソン エレクトリック ソシエテ アノニム 循環ポンプ
US9624945B2 (en) 2013-06-13 2017-04-18 Johnson Electric S.A. Circulation pump
WO2015082679A1 (fr) * 2013-12-06 2015-06-11 Ksb Aktiengesellschaft Carter de pompe en matière plastique possédant une coque intérieure, une coque extérieure et une matière de remplissage entre celles-ci
CN105814318A (zh) * 2013-12-06 2016-07-27 Ksb 股份公司 由内壳、外壳和其间的填充材料构成的塑料泵壳体
US20160312794A1 (en) * 2013-12-06 2016-10-27 Ksb Aktiengesellschaft Plastic Pump Housing Consisting of an Inner Casing, an Outer Casing and Filling Material Therebetween
JP2016540158A (ja) * 2013-12-06 2016-12-22 カーエスベー・アクチエンゲゼルシャフトＫｓｂ Ａｋｔｉｅｎｇｅｓｅｌｌｓｃｈａｆｔ 内側ケーシング、外側ケーシング、およびそれらの間の充填材料からなるプラスチックポンプハウジング
CN105814318B (zh) * 2013-12-06 2018-12-14 Ksb 股份公司 由内壳、外壳和其间的填充材料构成的塑料泵壳体
US10415589B2 (en) 2013-12-06 2019-09-17 Ksb Aktiengesellschaft Plastic pump housing consisting of an inner casing, an outer casing and filling material therebetween
WO2022023266A1 (fr) * 2020-07-28 2022-02-03 KSB SE & Co. KGaA Boîtier pour éléments de guidage de flux
LU503228B1 (de) * 2022-12-21 2024-06-21 Wilo Se Doppelpumpe mit Isolierverkleidung und zugehöriges Montageverfahren
EP4390140A1 (fr) * 2022-12-21 2024-06-26 Wilo Se Pompe double avec revêtement isolant et procédé d'assemblage associé

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