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EP1460275B1 - Motopompe - Google Patents

Motopompe Download PDF

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Publication number
EP1460275B1
EP1460275B1 EP03006417A EP03006417A EP1460275B1 EP 1460275 B1 EP1460275 B1 EP 1460275B1 EP 03006417 A EP03006417 A EP 03006417A EP 03006417 A EP03006417 A EP 03006417A EP 1460275 B1 EP1460275 B1 EP 1460275B1
Authority
EP
European Patent Office
Prior art keywords
adapter
motor pump
impeller
motor
pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03006417A
Other languages
German (de)
English (en)
Other versions
EP1460275A1 (fr
Inventor
Jörgen Schmidt
Hans-Dieter Schmidt
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 AS
Original Assignee
Grundfos 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 AS filed Critical Grundfos AS
Priority to DE50300854T priority Critical patent/DE50300854D1/de
Priority to EP03006417A priority patent/EP1460275B1/fr
Publication of EP1460275A1 publication Critical patent/EP1460275A1/fr
Application granted granted Critical
Publication of EP1460275B1 publication Critical patent/EP1460275B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/16—Sealings between pressure and suction sides
    • F04D29/165—Sealings between pressure and suction sides especially adapted for liquid pumps
    • F04D29/167—Sealings between pressure and suction sides especially adapted for liquid pumps of a centrifugal flow wheel
    • 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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • F04D29/0467—Spherical bearings
    • 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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2261—Rotors specially for centrifugal pumps with special measures
    • F04D29/2266—Rotors specially for centrifugal pumps with special measures for sealing or thrust balance

Definitions

  • the invention relates to a motor pump according to the preamble of claim 1.
  • Motor pumps of this type are well known, for. Example, by the US patent US-A-3 803 432. They are commonly used in boilers, in a wall area a water inlet and a water outlet have a small distance from each other.
  • the motor pump is adapted to it so that its pump impeller is exposed or is substantially exposed, such that its suction mouth is directly to the water outlet of the wall area where the motor pump is attached, connects. Because the motor pump in this case has no special discharge nozzle, promotes the impeller directly into the water inlet of the boiler wall area. Thus, can the circulation of the liquid in the boiler optimally carried out, wherein good pumping conditions are maintained in the area of the pump impeller.
  • British Patent GB-A-730 459 a by a motor rotatably driven centrifugal pump described. It consists in Essentially from a housing, which has a central suction inlet and a tangential to the spiral conveyor channel of this housing subsequent Compressor has, rotatably in the housing mounted on a drive shaft, promotional impeller with suction mouth and front cover plate and two pairs of mechanical seals on the pump impeller.
  • One mechanical seal pair is in front of each Suction mouth of the impeller and arranged behind the impeller, in order to avoid that the impeller from the pumped liquid originating axial thrust is exposed.
  • Each mechanical seal pair consists of a wheel attached to the, together with this rotating seal ring and one on the pump housing arranged, non-rotating sealing ring.
  • Rotating seal ring and non-rotating sealing ring lie with their sealing ring surfaces by spring force against each other and form a first seal. Furthermore, the two non-rotating sealing rings by means O-rings sealingly arranged on the pump housing and form so second seals.
  • the two mechanical seal pairs cause together with the O-rings a balanced Axialkraftbelastung of the impeller and thereby prevent an axial thrust on the drive shaft of the centrifugal pump.
  • the object of the invention is to provide a motor pump the introductory type whose impeller designed so is that when replacing the motor pump to simple and cost-effective way to design different water-bearing Facilities, but also with even different types of their Housing can be adjusted so that optimum flow conditions guaranteed in the impeller area.
  • the advantages which can be achieved with the invention are, in particular, that the motor pump in a simple and inexpensive way to optimal Flow conditions in the area of their impeller by use an adapter can be adjusted.
  • the motor pump can used in many installations, especially in boilers, in their moon area, which has two fluid connections, are designed differently for the assembly of the motor pump, such that in each case an axially larger gap between the Wall area and the pump impeller is to bridge.
  • the motor pump can also have a housing itself, in the Pumpengorgerad Scheme because of different rotating Motor pump heads of different design is. In both cases the different design is now achieved that the motor pump optimal flow conditions according to the invention in the region of its pump impeller ensures and thus continues its high efficiency guaranteed.
  • the motor pump can be designed to be a basic version without Adapter is usable, d. H. z. B. leading to such a liquid Device can be mounted that does not have an adapter on the pump impeller needed. If a motor pump in particular at such Boilers used in which the pump exchange a larger Space between the pump impeller and the fluid connections facing wall area of the relevant boiler is overcome, the adapter is used when mounting the motor pump. This can be the basic version of the motor pump as a loose additional part attached or already mounted on the impeller. This adapter is thus used when the space between the pump impeller without adapter and the water outlet of the concerned Wall area is too big. Without inserting an adapter would be a too large free gap arise, the flow conditions and thus deteriorates the efficiency of the pump.
  • an advantageous embodiment of the motor pump according to the invention is that the adapter in the form of an annular disc with a annular approach, which faces away from the pump impeller Side of the annular disc is provided in the form of an annular disc or in Form of a hub-shaped component is formed.
  • a clamping ring To attach the Adapter on the pump impeller is provided a clamping ring, the frictionally engages the pump impeller.
  • Such adapters are particularly simple and inexpensive to manufacture.
  • Fig. 1 shows a rotor 1 of an electric not shown Drive motor for a likewise only partially illustrated pump.
  • rotor 1 is for example a conventional permanent magnet rotor in partial spherical shape, which is shown in more detail in Fig ..
  • the rotor 1 can but also be such with conventional winding coils.
  • the respectively stator (not shown) matching to the rotor 1 is corresponding to electrical and other requirements constructed in a conventional manner.
  • the rotor 1 is connected to a pump impeller 2 directly against rotation, such that the pump impeller is rotationally driven by the rotor becomes.
  • the unit formed by the rotor 1 and the pump impeller 2 an annular adapter 3 is centrally assigned, such that the Adapter to the impeller 2 releasably fastened bar.
  • the adapter is provided with a clamping ring 4, as shown in FIG. 1 clearly visible is. With the help of this clamping ring of the adapter 3 to the pump impeller 2 positively frictionally attached.
  • the adapter 3 has on its rear side, the pump impeller second has turned away, an annular recess 5, in which the clamping ring 4 is inserted.
  • On the outer circumference of the adapter for example three recesses 6 are provided, in which three clamping fingers 7des Locking ring 4 engage, (Fig. 1).
  • the recesses 6 and the inside engaging clamping fingers 7 thus form locking means to the clamping ring 4 to the adapter 3 and the adapter to the pump impeller 2 hold (Fig. 3).
  • the clamping ring 4 is arranged captive on the adapter 3, so that the adapter together with the clamping ring 4 a unit forms.
  • the captivity of the clamping ring 4 can be effected be that he after his insertion in the recess 5 in usual Way caulked or fixed for example by spot welding becomes.
  • the adapter 3 may be formed in various embodiments be.
  • Figures 1, 2 and 3 show an example embodiment.
  • the embodiment of the adapter 3 shown in Figures 1, 2 and 3 consists of an annular disc 8, on its the impeller 2 opposite side is provided with an annular projection 9, wherein the annular disc and the approach form a one-piece component.
  • the annular projection 9 forms a kind of hub and causes an axial dimension A. (Fig. 3) for the bridging of the above-mentioned intermediate space between the pump impeller and a wall area with fluid connections.
  • This wall area can be such a z. B. a boiler.
  • Which axial dimension A is selected in each case depends from the boiler types.
  • This Axialengine can also from the Impeller-side housing part of the motor pump types, for others Liquid leading facilities, eg. B. piping systems used will depend.
  • the motor pump without the adapter. 3 at the respective liquid-conducting device or in conjunction be used with their impeller-side housing part.
  • the adapter 3, the motor pump is usually attached as a loose additional part, so that can be decided on the mounting location of the motor pump, whether the Adapter on the pump impeller 3 must be used.
  • this can also be formed be that it consists only in the form of an annular disk, d. H. without Approach 9.
  • the annular disk is then in total in terms of their thickness Essentially designed so that the aforementioned axial dimension A at least given in the suction mouth of the pump impeller.
  • the adapter can proceed as be that this formed practically only as a ring-shaped approach is. In this form it is comparable to the aforementioned annular Approach 9.
  • the adapter 3 then forms a kind of hub-shaped Component.
  • the impeller 2 which is a front cover plate 2a, so attached to the rotor 1, that on this cover plate provided blades 2b facing the rotor 1.
  • This training and arrangement of the pump impeller is also expedient in that than that the adapter 3 then easily by means of Clamping fingers 7 of the clamping ring 4 on the cover plate 2a of the impeller 2 can be attached (Fig. 3), at which it centers and immediately is applied.
  • Fig. 3 shows a pump impeller 2 with front cover plate 2a.
  • a pump impeller with only a back cover letter use, on which the blades 2b are integral (not shown), so that the pump impeller 2 on its front side disc free is.
  • the adapter 3 in this case the shape of an annular disc with or without approach 9, then lies on the front of the Shovels such a pump impeller firmly, with the help of the clamping ring 4.
  • the adapter exercises in this way two functions namely, its bridging function and additionally the function as front cover disc.
  • the impeller 2 may also be formed in this way be that it has conventionally two shields or that the blades are formed integrally with the rotor 1 are. Also in these two cases, the appropriate adapter the pump impeller or on the blades releasably secured, z. B. by means Clamping means.
  • the rotor 1 shown in FIG. 3 has a rotationally symmetrical carrier 10, on one side of the pump impeller 2 with the adapter. 3 is attached.
  • the carrier 10 consists essentially of a disc-shaped Body 10a with a rear, cylindrical extension 10b.
  • a part-spherical shell magnetic body 11 is by means of a thin Mantels 12 attached to the disk body 10a and the extension 10b.
  • a bearing body 13 is provided, the is held in position by means of a bushing 14.
  • the jacket 12 can also be formed as shown be that he also the pump impeller 2, a retaining ring. 2 c, directly attached to the carrier 10 by clamping, as shown in FIG. 3 shows.
  • a partially illustrated motor pump 18 is shown.
  • shown are essentially a suction-side housing part 19 of the motor pump 18 with the suction nozzle 20 and the discharge nozzle 21, the rotor 1 with the attached impeller 2 and the at this Pump impeller clamped adapter 3 and a support device 22 with a central, hineinerstreckigem axially into the rotor 1 Support 23.
  • a fixed ball head 24 At the inner end of this support is a fixed ball head 24, which engages in the bearing body 13.
  • the ball head 24 and the bearing body 13 form a movable pivot bearing for the Permanent magnet rotor 1, such that this rotor in addition to his Rotation in addition to self-adjusting can align to a flawless to be able to assume a rotating operating setting.
  • the housing part 19, the nozzle 20 and 21 leading to liquid Pipelines are connectable, with an inlet 25, which with the Suction port 20 communicates, and with an outlet 26, which communicates with the Pressure port 21 communicates, provided.
  • This housing part has a inner wall portion 27, the pump impeller 2 a larger having axial distance. Therefore, the impeller is with a Adapter 3 provided to the axial gap between this Wall portion 27 and pump impeller 2 for the purpose of ensuring good flow conditions and a good efficiency in the suction mouth area to bridge the pump impeller. At standstill of Rotor 1 will this, due to its center of gravity, to the Tilt ball head 24 or inclined.
  • the adapter 3 is used in this dormant operating condition also to the rotor 1 on the ball head 24 to keep supported by the adapter on the wall area 27 comes to the plant, so that the rotor does not fall off the ball head.
  • the rotor can thus its rotating operating function when switching take the motor pump again safely.
  • motor pump used in this description is so too understand that even the aforementioned motor pump head alone, in the Essentially the rotor 1 with the pump impeller 2 and the adapter 3, the electric stator and the thread 19a of the pump housing part 19 screw-on motor housing (both not shown) contains, of which is included.
  • the motor pump for example, used on a boiler.
  • the motor pump may be the aforementioned motor pump housing part 19 additionally included.
  • the motor pump preferably installed in a piping system.
  • the housing part 19 is not of the Piping dismantled, but it is only the above explained motor pump head disassembled from the housing part 19 and replaced by a new motor pump head, in which the pump impeller of the rotor in design-related dependence of the new motor pump head must be provided with an adapter 3 or not.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (10)

  1. Motopompe comprenant un carter, un moteur électrique disposé dans le carter, moteur qui présente un stator et un rotor (1), et une roue de pompe (2) solidarisée en rotation au rotor et comportant plusieurs aubes (2b), laquelle est, dans l'état monté de la motopompe, placée librement en vis-à-vis d'une zone de paroi présentant des branchements pour liquide et coopère avec les branchements pour liquide, caractérisée en ce qu'il est prévu, pour la roue de pompe (2), au moins un adaptateur (3) de forme annulaire, pouvant être fixé de façon amovible sur le côté aspiration de cette dernière, pour ponter un intervalle entre la roue de pompe (2) et la zone de paroi munie des branchements pour liquide, qui est placée en vis-à-vis, côté aspiration, de cette roue de pompe.
  2. Motopompe, selon la revendication 1, caractérisée en ce que l'adaptateur (3) est réalisé sous la forme d'un disque annulaire (8) pourvu d'un appendice de forme annulaire (9) qui est prévu sur la face de ce disque annulaire tournée à l'opposé de la roue de pompe (2).
  3. Motopompe selon la revendication 1, caractérisée en ce que l'adaptateur (3) est réalisé sous la forme d'un disque annulaire.
  4. Motopompe selon la revendication 1, caractérisée en ce que l'adaptateur (3) est réalisé sous la forme d'une pièce en forme de moyeu.
  5. Motopompe selon la revendication 2 ou 3, caractérisée en ce que la face avant de la roue de pompe (2) est réalisée sans disque de couverture et en ce que l'adaptateur (3) en forme de disque annulaire s'applique fermement contre les aubes (2a) de la roue de pompe (2), à l'avant de celles-ci, dans une fonction additionnelle de disque de couverture avant.
  6. Motopompe selon l'une des revendications 1 à 5, caractérisée en ce que l'adaptateur (3) est, au moyen d'une bague de serrage (4), fixé par blocage à la roue de pompe (2).
  7. Motopompe selon la revendication 6, caractérisée en ce que la bague de serrage (4) est disposée encastrée dans l'adaptateur (3).
  8. Motopompe selon la revendication 6 ou 7, caractérisée en ce que la bague de serrage (4) est disposée sur l'adaptateur d'une façon qui la rend imperdable.
  9. Motopompe selon l'une des revendications 1 à 8, caractérisée en ce que le rotor (1) est un rotor à aimant permanent en forme de partie de sphère, auquel la roue de pompe (2) pouvant être reliée à l'adaptateur (3) est fixée directement et qui est monté mobile en son centre, en s'auto-ajustant, sur une tête sphérique fixe (24).
  10. Motopompe selon l'une des revendications 2 à 9, caractérisée en ce qu'il est prévu un jeu de plusieurs adaptateurs (3), dont les dimensions axiales, dans la zone de leur embouchure d'aspiration, sont différentes les unes des autres pour ponter des intervalles de grandeurs différentes en direction axiale.
EP03006417A 2003-03-21 2003-03-21 Motopompe Expired - Lifetime EP1460275B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE50300854T DE50300854D1 (de) 2003-03-21 2003-03-21 Motorpumpe
EP03006417A EP1460275B1 (fr) 2003-03-21 2003-03-21 Motopompe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03006417A EP1460275B1 (fr) 2003-03-21 2003-03-21 Motopompe

Publications (2)

Publication Number Publication Date
EP1460275A1 EP1460275A1 (fr) 2004-09-22
EP1460275B1 true EP1460275B1 (fr) 2005-07-27

Family

ID=32798855

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03006417A Expired - Lifetime EP1460275B1 (fr) 2003-03-21 2003-03-21 Motopompe

Country Status (2)

Country Link
EP (1) EP1460275B1 (fr)
DE (1) DE50300854D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105756953A (zh) * 2016-04-22 2016-07-13 汪普军 一种电脑水冷泵

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2984348A4 (fr) * 2013-04-10 2016-11-16 Weir Minerals Australia Ltd Rotor de pompe
CN219622926U (zh) * 2023-02-14 2023-09-01 唐春兴 一种具有降噪结构的计算机水冷泵

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB730459A (en) * 1953-10-16 1955-05-25 Hathaway Ltd L High pressure pumping unit for fire-fighting purposes
AT333904B (de) * 1971-10-07 1976-12-27 Vortex Pumpen Ag Reaktorbehalter, insbesondere fur siedewasserreaktoren
US4043706A (en) * 1973-06-05 1977-08-23 Alan John Walker Bearing support structure for electro-magnet driven pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105756953A (zh) * 2016-04-22 2016-07-13 汪普军 一种电脑水冷泵
CN105756953B (zh) * 2016-04-22 2018-08-10 汪普军 一种电脑水冷泵

Also Published As

Publication number Publication date
DE50300854D1 (de) 2005-09-01
EP1460275A1 (fr) 2004-09-22

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