EP0218031B1 - Pompe centrifuge - Google Patents

Pompe centrifuge Download PDF

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Publication number
EP0218031B1
EP0218031B1 EP19860110700 EP86110700A EP0218031B1 EP 0218031 B1 EP0218031 B1 EP 0218031B1 EP 19860110700 EP19860110700 EP 19860110700 EP 86110700 A EP86110700 A EP 86110700A EP 0218031 B1 EP0218031 B1 EP 0218031B1
Authority
EP
European Patent Office
Prior art keywords
pump
housing
centrifugal pump
side wall
pump according
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
EP19860110700
Other languages
German (de)
English (en)
Other versions
EP0218031B2 (fr
EP0218031A1 (fr
Inventor
Günter Naasner
Günter Strelow
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.)
Wilo GmbH
Original Assignee
Wilo Werk GmbH and Co
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25836241&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0218031(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Wilo Werk GmbH and Co filed Critical Wilo Werk GmbH and Co
Priority to AT86110700T priority Critical patent/ATE49632T1/de
Publication of EP0218031A1 publication Critical patent/EP0218031A1/fr
Application granted granted Critical
Publication of EP0218031B1 publication Critical patent/EP0218031B1/fr
Publication of EP0218031B2 publication Critical patent/EP0218031B2/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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/605—Mounting; Assembling; Disassembling specially 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
    • F04D29/406—Casings; Connections of working fluid 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

Definitions

  • the invention relates to a centrifugal pump with a canned motor and a single impeller which is arranged in a pump housing which has an inlet and outlet which enter or exit through a side wall of the housing lying essentially flat in one plane.
  • centrifugal pumps has molded, protruding inlet and outlet connections which are fastened to pipes or devices by means of pipe fittings. Such an installation requires a considerable amount of space and the parts required for this increase the overall weight. Manufacturing and assembly costs are also high and different connection parts are required for each pump type or pump size.
  • Fig. 4 From DE-OS-2 640 374, Fig. 4 it is known to make an outside of the pump housing flat and to attach a pipe fitting to this outside. At the connection piece protrude, which extend into corresponding recesses in the outer surface of the pump. The arrangement of such nozzles and recesses means an increased manufacturing effort.
  • the object of the invention is to improve a centrifugal pump in such a way that it is easy to assemble with simple manufacture and minimal space requirement.
  • Such a pump can be attached with its flat side wall directly to the flat side wall of a device without any intermediate parts. It is therefore sufficient that the device to which a pump is to be connected has a smooth surface with two openings in this surface in order to mount a pump directly with the least amount of assembly work. Connection parts and intermediate parts are not required, so that considerable space and weight are saved. There is no need for pipe fittings. Very compact heaters and heating units can be created. On the side facing the consumption or connection device, the pump lacks a pressure wall, so that weight and space are saved. Manufacturing, assembly and changes are also simplified.
  • Those who need a pump for a device need only ensure that regardless of the desired pump size and pump type, the same two openings of the same size are always present on the outer wall or on an intermediate wall with the same distance, in order then to give the pump the desired power order and fasten.
  • a particularly simple assembly is made possible when the opening forming the outer end of the outlet is parallel to the axis of the impeller and in the plane of the side wall of the pump housing.
  • the side wall of the pump housing can be attached to the wall of the consumption or connection device directly or by means of sealing means.
  • a particularly small construction is achieved when the side wall of the pump housing having the inlet opening is perpendicular to the axis of the impeller. It is particularly advantageous if the side wall of the pump housing which has the inlet opening is circular and coaxial with the rotor.
  • the pump housing have an inner insert which forms a spirally widening outlet channel and which is surrounded on the outside by an outer housing which is fastened to the drive motor and which lies with its side edges against the wall of the consumption device.
  • the inner insert forms the connection surface to the consumption or connection device. Any position of the pump in the installed state can be reached if the inner insert in the outer housing is rotatably adjustable.
  • the side wall of the pump housing or the outer housing has at least one flange on the outer edge, with which the side wall can be fastened to the wall of the consumption device. Screws inserted in the bores of the flanges result in simple and secure attachment of the pump to the consumption device.
  • a quick and easy assembly and disassembly is made possible in that the pump, in particular the (outer) housing by bayonet lock on the consumption or on locking device is attached. Manufacturing and assembly are facilitated if the motor housing and pump housing, in particular pump housing, are made in one piece. Alternatively or additionally, the can of the motor and the pump housing, in particular the pump outer housing, can be made in one piece for this purpose.
  • a part is attached between the pump and the consumption device, which forms a coaxial annular chamber around a pipe aligned with the pump inlet, which can be connected to the pump outlet and the inlet of the consumption device.
  • the pump can be attached in any rotational position regardless of the position of the consumer inlet.
  • the size of the consumer inlet can vary and there can be multiple consumer inlets.
  • all disk-shaped devices or parts attached between the pump and the consumption or connection device can be fold-symmetrical about an axis which intersects the pump rotation axis and is perpendicular to it, so that any connections or operating elements are on the other side when rotated through 180 °.
  • centrifugal pump for use of the centrifugal pump according to the invention it is advantageously proposed that it be mounted on the flat outer or intermediate wall of a heating duct, heater, liquid reservoir, heat exchanger, pump housing, pipe connection, hot water device, breather, dirt trap, differential pressure regulator, measured value sensor, pre-swirl shut-off device, flow regulator or a gravity brake can be fastened, the outer or intermediate wall having two openings which correspond in distance and / or diameter to those of the side wall of the pump housing.
  • the shaft pump is used as a hot water pump, especially in heating systems.
  • the pump 1 has a pump housing 2, 11, in particular made of plastic or metal, in which an impeller 3 is rotatably arranged and in which a tubular inlet 4 is formed coaxially to the impeller, through which the impeller is directly flown.
  • a spirally widening outlet channel 5 Around the impeller there is a spirally widening outlet channel 5.
  • the housing 2 is in the form of a circular disk, the height H of the cylindrical outer wall being substantially less than the diameter of the circular flat pump side wall 6, which is at right angles and coaxial to the axis of the impeller 3.
  • the inlet 4 opens out with an inlet opening 7 and the outlet channel 5 with an outlet opening 8.
  • the openings 7 and 8 are located in the plane of the side wall 6.
  • a baffle tube electric motor 9 coaxially attached to the impeller 3, which lies with its drive shaft 10 in the impeller 3.
  • the pump housing 2 consists of an inner insert 2 which closely surrounds the impeller 3 and forms the spirally widening outlet channel 5 around the impeller, and an outer housing 11 surrounding the insert 2, which is fastened to the electric motor 9 and carries seals 13, which are in the plane of the side wall 6.
  • the insert 2 thus forms the flat interface to the consumption or connection devices.
  • the outer housing 11 which acts as a pressure vessel, forms flanges 12 parallel to the side wall 6, which have bores 14 in order to be able to accommodate screws. With these screws, not shown, the outer housing 11 and thus the entire pump can be attached to consumption devices.
  • Impellers 3 and inserts 2 of different powers can be inserted into this outer housing 11.
  • the impeller 3 can be replaced by a differently shaped impeller, but the spiral channel 5 surrounding the impeller and the inlet can be adapted to the respective impeller and the desired power as well as to the respective speed range.
  • the inlet and outlet openings 7, 8 in use 2a can be adapted to the conditions of the consumption or connection devices in terms of their distance from one another and also in their arrangement in the flat side wall 6. It is sufficient to change the insert 2a in order to meet the requirements.
  • the outlet on the circumference of the housing can be arranged radially or tangentially. It is also important that the side wall 6 of the pump housing 2 or the outer housing 11 has at least one flange 12 on the outer edge, with which the side wall can be fastened to the wall of the consumption device.
  • the inner insert 2 can be made smaller than shown in Figure 1. It may be sufficient if it only forms the inlet opening 7 and the diffuser for the impeller 3.
  • the insert 2 can also consist of several parts. It is particularly easy to manufacture if it is made of plastic. In particular, this makes it possible and economically justifiable to include differently shaped inserts in the pump so that the user can change the pump output before installation.
  • the pump in particular the (outer) housing
  • the consumption or connection device by a bayonet lock.
  • Motor housing and pump housing, in particular pump outer housing 11, are made in one piece.
  • the can of the motor and the pump housing, in particular the pump outer housing 11, are made in one piece.
  • FIG. 7 shows an embodiment in which a part 30 is fastened between the pump and the consumption device, which forms a coaxial annular chamber 31 around a pipe 32 that is aligned with the pump inlet and can be connected to the pump outlet and the inlet of the consumption device.
  • Consumption devices are understood to mean all the devices, parts and devices to which a pump is usually attached. These can include the following: a heating boiler, heater, hot water device, liquid storage container, heat exchanger, pump housing, pipe connection, breather, dirt trap, differential pressure regulator, sensor, pre-swirl regulator, flow divider, mixer, a shut-off device or a gravity brake.
  • a venting device 15 is shown, on the left flat side wall of the pump 1 can be screwed.
  • This venting device with venting chamber 16 and grille 17 as well as upper venting device 18 can be screwed with the side opposite the pump to a further device 19 (FIG. 2), which can be a heater, boiler, boiler or other consumption device.
  • the ventilation device 15 forms an intermediate part between the device 19 and the pump 1, through which the two water flows flow.
  • the pump sucks water through the ventilation chamber 16 to the inlet opening 7 and then presses this water back through the opening 8 and the flow nozzle 21 to the channel 22 of the device 19.
  • Opening 8, flow connector 21 and channel 22 are coaxial with each other.
  • the inlet opening 7 and the channel 20 are coaxial to one another and the ventilation chamber 16 is at the same height.
  • the pump can be attached to a sheet metal wall 23, as shown in Fig. 2, which sheet metal wall is part of any device. Instead, the pump can also be attached to the outer wall 24 of a cast iron boiler member 25 (Fig. 5). In Fig. 6, a pipe connection part 26 is also shown, to which the pump can be fastened, so that this turns the pump 1 into a conventional pump with radial or tangential pipe connections. Such a flat connection part can also be attached laterally to the pump in order to create a radial or tangential outlet. Furthermore, a flat connecting part can be fastened, which forms a concavely curved outer surface for consumers on the side surface facing away from the pump, which has a correspondingly convexly curved connecting surface.
  • the distance between the openings 27, 28, on which the openings 7, 8 of the pump come to rest are always at the same distance from one another and of the same diameter corresponding to the openings 7, 8 a wide variety of pumps can be attached to the devices as long as the distance between the openings 7, 8 and their diameter is the same. Pumps of different capacities can thus be attached without having to change the distance between the channels or openings 27, 28 on the consumption devices. However, if other distances between the openings 7, 8 from one another are required, the inner insert 2a can be exchanged for an insert with openings whose distance corresponds to the desired one.
  • all disk-shaped devices 15 or parts 30 fastened between the pump and the consumption or connecting device 15, 19, 25, 26 are fold-symmetrical about an axis which intersects the pump rotation axis and is perpendicular to it.
  • the pump outlet or the pressure port can protrude radially or tangentially from the housing.

Landscapes

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

Claims (17)

1. Pompe centrifuge à moteur à gaine, et avec un seul rotor qui est disposé dans un carter de pompe, lequel présente une admission et un échappement qui entre ou sort respectivement par une paroi latérale du carter sensiblement plane se trouvant dans un plan, caractérisée en ce qui les extrémités extérieures des ouvertures (7) formant l'admission (4) et l'échappement (5) se trouvent dans le plan de la paroi latérale plane (6) du carter de pompe (2, 11), et que le carter de pompe (2, 11) peut être fixé par cette paroi latérale plane (6) directement adjacent, ou par l'intermédiaire d'un moyen d'étanchéité (13), à la paroi plane (23, 24) d'un dispositif consommateur (15, 19, 25, 26) qui présente des ouvertures correspondantes.
2. Pompe centrifuge selon la revendication 1, caractérisée en ce que l'ouverture (8) formant l'extrémité extérieure de l'échappement (5) se trouve à axe parallèle à l'axe du rotor et dans le plan de la paroi latérale (6) du carter de pompe (2,11 ).
3. Pompe centrifuge selon la revendication 1 ou 2, caractérisée en ce que l'admission (4) se trouve coaxiale au rotor (3).
4. Pompe centrifuge selon l'une des revendications précédentes, caractérisée en ce que la paroi latérale (6) du carter de pompe (2, 11 ) qui présente l'ouverture d'admission (7) est orthogonale à l'axe du rotor (3).
5. Pompe centrifuge selon l'une des revendications précédentes, caractérisée en ce que la paroi latérale (6) du carter de pompe (2, 11) qui présente l'ouverture d'admission (7) est circulaire et coaxiale au rotor (3).
6. Pompe centrifuge selon l'une des revendications précédentes, caractérisée en ce que le carter de pompe présente un insert (2) intérieur, s'élargissant en spirale et formant le canal d'échappement (5), qui est entouré extérieurement par un carter externe (11) fixé au moteur d'entrai- nement (9), qui est adjacent par ses bords latéraux à la paroi (23, 24) du dispositif consommateur (15, 19, 25, 26).
7. Pompe centrifuge selon la revendication 6, caractérisée en ce que l'insert intérieur (2) forme la surface de raccordement au dispositif consommateur (15, 19, 25, 26).
8. Pompe centrifuge selon la revendication 6, caractérisée en ce que l'insert intérieur (2) est logé mobile en rotation dans le carter externe (11).
9. Pompe centrifuge selon l'une des revendications précédentes, caractérisée en ce que la paroi latérale (6) du carter de pompe (2, 11) ou le carter externe (11) présente sur le bord extérieur au moins un flasque (12) avec lequel la paroi latérale peut être fixée à la paroi du dispositif consommateur.
10. Pompe centrifuge selon l'une des revendications 7 à 9, caractérisée en ce que les parois latérales du flasque (12) et de l'insert (2) se trouvent sensiblement dans le même plan.
11. Pompe centrifuge selon l'une des revendications précédentes, caractérisée en ce que d'autres dispositifs de raccordement ou consommateurs (15) sont intercalés entre la pompe (1) et le dispositif (19, 25) raccordé à la pompe, dont les surfaces latérales sont fixées les unes aux autres parallèles entre elles et qui sont traversées par les courants de pompe.
12. Pompe centrifuge selon la revendication 11, caractérisée en ce qu'une pièce (30) est fixée entre la pompe et le dispositif consommateur, qui forme une chambre annulaire (31) coaxiale avec un tube (32) aligné avec l'admission de pompe, laquelle chambre peut être reliée à l'échappement de pompe et à l'admission du dispositif consommateur.
13. Pompe centrifuge selon la revendication 11 ou 12, caractérisée en ce que tous les dispositifs (15) ou pièces (30) en forme de disques fixés entre la pompe et le dispositif consommateur (15, 19, 25, 26) sont symétriques en pliage autour d'un axe qui coupe l'axe de rotation de la pompe et lui est perpendiculaire.
14. Pompe centrifuge selon l'une des revendications précédentes, caractérisée en ce que la pompe, en particulier le carter (externe) est fixée au dispositif consommateur par une fermeture à baïonnette.
15. Pompe centrifuge selon l'une des revendications précédentes, caractérisée en ce que le carter de moteur et le carter de pompe, en particulier le carter externe de pompe (11), sont réalisés en une seule pièce.
16. Pompe centrifuge selon l'une des revendications précédentes, caractérisée en ce que la gaine du moteur et le carter de pompe, en particulier le carter externe de pompe (11), sont réalisés en une seule pièce.
17. Utilisation d'une pompe centrifuge selon l'une des revendications précédentes, caractérisée en ce qu'elle peut être fixée à la paroi plane extérieure ou intermédiaire (23, 24) d'un appareil de chauffage, d'un récipient de stockage de fluide, d'un échangeur de chaleur, d'un carter de pompe, d'un appareil à eau chaude, d'un reniflard, d'un collecteur d'impuretés, d'un régulateur de pression différentielle, d'un capteur de valeur mesurée, d'un régulateur de prérotation, d'un diviseur d'écoulement, d'un mélangeur, d'un dispositif d'arrêt ou d'un frein à gravité, la paroi extérieure ou intermédiaire (23, 24) présentant deux ouvertures (27, 28) qui coïncident en écartement et/ou diamètres avec celles (7, 8) de la paroi latérale (6) du carter de pompe (2, 11).
EP86110700A 1985-09-21 1986-08-02 Pompe centrifuge Expired - Lifetime EP0218031B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86110700T ATE49632T1 (de) 1985-09-21 1986-08-02 Kreiselpumpe.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3533781 1985-09-21
DE3533781 1985-09-21
DE3624917 1986-07-23
DE19863624917 DE3624917A1 (de) 1985-09-21 1986-07-23 Kreiselpumpe

Publications (3)

Publication Number Publication Date
EP0218031A1 EP0218031A1 (fr) 1987-04-15
EP0218031B1 true EP0218031B1 (fr) 1990-01-17
EP0218031B2 EP0218031B2 (fr) 1994-10-12

Family

ID=25836241

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86110700A Expired - Lifetime EP0218031B2 (fr) 1985-09-21 1986-08-02 Pompe centrifuge

Country Status (3)

Country Link
EP (1) EP0218031B2 (fr)
DE (2) DE3624917A1 (fr)
ES (1) ES2000984A6 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4021410A1 (de) * 1990-07-06 1992-01-16 Oplaender Wilo Werk Gmbh Doppel-kreiselpumpe
DE9219022U1 (de) * 1992-05-22 1997-01-30 Wilo Gmbh Kreiselpumpen mit spiralförmigem Pumpeninnenraum
DE9416551U1 (de) * 1994-10-14 1994-12-01 Wilo Gmbh Kreiselpumpe mit Verschraubung
DE19511027A1 (de) * 1995-03-28 1996-10-02 Wilo Gmbh Kreiselpumpe mit Entlüftung
JP3514907B2 (ja) * 1996-04-05 2004-04-05 本田技研工業株式会社 吸収式冷凍機
DE29704753U1 (de) 1997-03-15 1997-05-15 Grundfos As Gießbares Pumpengehäuse für ein Motorpumpenaggregat zur Montage an einer ebenen Wandfläche einer Vorrichtung
DE19819723A1 (de) * 1998-05-02 1999-11-04 Wilo Gmbh Befestigung zwischen Pumpe und Motor
AT410574B (de) * 1998-10-22 2003-06-25 Tcg Unitech Ag Kühlwasserpumpe für eine brennkraftmaschine
DE102005049203A1 (de) * 2005-10-14 2007-04-19 Ryll-Tech Gmbh Heizkessel zum Erhitzen von Flüssigkeit, Verfahren zur Fertigung eines Heizkessels

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2322924A (en) * 1940-02-05 1943-06-29 Hoover Co Method of making motors
US2390279A (en) * 1943-09-10 1945-12-04 Buda Co Internal-combustion engine
FR1000875A (fr) * 1949-11-28 1952-02-18 Perfectionnements aux pompes, plus spécialement aux pompes d'incendie
DE1097819B (de) * 1959-04-09 1961-01-19 Siemens Ag Laugenpumpe fuer Waschmaschinen u. dgl. mit aus Kunststoff bzw. duennwandigem Metall bestehendem Gehaeuse
NL156487B (nl) * 1968-10-17 1978-04-17 Nash Engineering Co Vloeistofringpomp.
DE2541422B2 (de) * 1975-09-17 1979-04-05 Schmalenberger Gmbh & Co, 7400 Tuebingen Motorpumpeneinheit mit einem mindestens aus zwei Gehäusehälften bestehenden Pumpengehäuse
DE2640374A1 (de) * 1976-09-08 1978-03-09 Guenther Dipl Ing Boes Pumpe
DE3220448C1 (de) * 1982-05-29 1983-08-11 Grundfos A/S, 8850 Bjerringbro Pumpenaggregat fuer Heizungs- und Brauchwasseranlagen

Also Published As

Publication number Publication date
ES2000984A6 (es) 1988-04-01
DE3624917A1 (de) 1987-03-26
EP0218031B2 (fr) 1994-10-12
DE3668356D1 (de) 1990-02-22
EP0218031A1 (fr) 1987-04-15

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