EP1441130A2 - Modulares Pumpengehäuse - Google Patents

Modulares Pumpengehäuse Download PDF

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Publication number
EP1441130A2
EP1441130A2 EP03012988A EP03012988A EP1441130A2 EP 1441130 A2 EP1441130 A2 EP 1441130A2 EP 03012988 A EP03012988 A EP 03012988A EP 03012988 A EP03012988 A EP 03012988A EP 1441130 A2 EP1441130 A2 EP 1441130A2
Authority
EP
European Patent Office
Prior art keywords
scroll
external
centrifugal pump
union
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.)
Withdrawn
Application number
EP03012988A
Other languages
English (en)
French (fr)
Other versions
EP1441130A3 (de
Inventor
Agostino Todeschini
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.)
Viesse Pompe Srl
Original Assignee
Viesse Pompe Srl
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 Viesse Pompe Srl filed Critical Viesse Pompe Srl
Publication of EP1441130A2 publication Critical patent/EP1441130A2/de
Publication of EP1441130A3 publication Critical patent/EP1441130A3/de
Withdrawn legal-status Critical Current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
    • F04D9/00—Priming; Preventing vapour lock
    • F04D9/02—Self-priming 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

  • This patent concerns centrifugal pumps.
  • centrifugal single-impeller pumps used at present fundamentally comprise a substantially scroll-shaped casing housing a bladed impeller with substantially radial septa.
  • the pump casing is provided with suitable unions for the connection with the suction pipe and with the delivery pipe.
  • suction takes place axially with respect to the impeller, while delivery is tangential to the impeller.
  • centrifugal pumps are known and used according to the needs and their functional characteristics, for example normalized, self-priming, vacuum-assisted centrifugal pumps, etc.
  • centrifugal pumps have differently shaped inside and outside.
  • the same type of pump with the same operating characteristics may need specific unions, or unions placed in specific positions, or special seats for accessories or connections on the outer surface.
  • a new type of modular centrifugal pump has been designed and implemented, which comprises an internal hydraulic core that is always the same independently of the specific needs, and an external shell differentiated according to the various application needs.
  • the internal core is constituted by a connection disc and an internal shell, called scroll, in which the impeller turns.
  • the aim of the new pump is to reduce the number of different parts to be produced to construct pumps for different uses and applications.
  • Another aim of the new pump is to produce some standard pump parts that can be coupled with different external shells.
  • a further aim of the new pump is to reduce the number of different parts to be produced to construct pumps having similar fluid-dynamic characteristics, but different applications.
  • Another aim of the new pump is to allow the use of different materials for different parts of the casings, which may be functional or connection parts.
  • a further goal of the invention is the production of a pump having different fluid-dynamic characteristics, though maintaining the positions and dimensions of the unions unchanged and the overall dimensions of the pump substantially identical.
  • Another goal of the invention is the production of a pump so that in the same model of self-priming pump it is possible to modifiy the diameter of the impeller, at the same time maintaining the self-priming characteristics unchanged.
  • Another aim of the invention is the production of a pump that can be personalized according to the customer's request, by simply modifying the external shell, with no need to design a new pump.
  • a further aim of the new pump is to reduce the external noise levels, since the impeller of this pump will be insulated by two metal shells.
  • connection disc, the impeller and the scroll constitute the hydraulic part, which is always the same for the different types of pumps.
  • the various external shells suitable for being coupled with the scroll and/or with the connection disc, have different shapes and/or unions according to the final use for which the pump is destined.
  • Figure 1 shows a cross section of the connection disc (P), the impeller (G) and the scroll (V) that constitute the standardized hydraulic part of the new pump.
  • connection disc (P) is provided with a central hole (Pf) and the connection shaft (Ga) between the impeller (G) and the motor part of the pump, typically an electric motor or an internal combustion engine, passes through said central hole.
  • the impeller (G) is constituted by a series of radial, generically trapezoidal wings (Gp).
  • the scroll (V) is constituted by a generically cylindrical shell suitable for containing the impeller (G) and for being coupled with the connection disc (P).
  • said scroll (V) is provided with a central hole (Va) in correspondence with the axis of the impeller (G) and with a second tangential hole (Vm).
  • the impeller (G) is housed into a suitable rotation chamber (Vg) contained between the connection disc (P) and the scroll (V).
  • connection disc (P) and the contact surface of the scroll (V) are provided with holes (Px, Vx), if necessary threaded, that ensure the connection between the connection disc (P) and the scroll (V) with screws (X).
  • holes (Px, Vx) if necessary threaded, that ensure the connection between the connection disc (P) and the scroll (V) with screws (X).
  • X screws
  • connection disc (P) has dimensions, that is, diameter or width, exceeding the diameter of the scroll (V), in such a way as to present a further connection edge with the external shell (C, diagrammatically shown in Figure 1).
  • the hydraulic part constructed as described above is such as to suck the liquid through the concentric hole (Va) of the scroll (V) as a consequence of the rotation of the impeller (G), and to expel it through the tangential hole (Vm) of the scroll (V).
  • the external shell (C ) has the generical shape of a cap or cylinder, so that it can be applied to the connection disc (P) on the same side of the scroll (V) and can contain and cover said scroll (V) leaving an air space between the inner surface of the external shell (C ) and the scroll (V).
  • Said external shell (C) is provided with holes (Cy), if necessary threaded, aligned with corresponding holes (Py) present on the connection disc (P), in such a way as to ensure the union between the connection disc (P) and the external shell (G) with screws (Y).
  • Said external shell (C) may have different shapes, some of which are illustrated in the example of Figure 2, which shows a simple centrifugal pump, in the example of Figure 3, which shows a self-priming pump, in the example of Figure 4, which shows a vacuum-assisted pump, in the example of Figure 6, which shows a vacuum-assisted self-priming pump.
  • Said external shell (C) has septa, partitions (Cs) or similar elements that divide the space included between the external shell (C) and the scroll (V) in two separate chambers (Oa, Om) having various shapes and communicating with the two suction (Va) and delivery (Vm) holes of the scroll (V), respectively.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP03012988A 2003-01-23 2003-06-07 Modulares Pumpengehäuse Withdrawn EP1441130A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITPD20030010 ITPD20030010A1 (it) 2003-01-23 2003-01-23 Pompa centrifuga modulare avente girante e voluta interni
ITPD20030010 2003-01-23

Publications (2)

Publication Number Publication Date
EP1441130A2 true EP1441130A2 (de) 2004-07-28
EP1441130A3 EP1441130A3 (de) 2007-11-21

Family

ID=32587896

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03012988A Withdrawn EP1441130A3 (de) 2003-01-23 2003-06-07 Modulares Pumpengehäuse

Country Status (2)

Country Link
EP (1) EP1441130A3 (de)
IT (1) ITPD20030010A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1876359A1 (de) * 2006-07-04 2008-01-09 Messner GmbH & Co.KG Teichpumpe
WO2008043527A1 (en) * 2006-10-10 2008-04-17 Grundfos Management A/S Multistage pump assembly
US20160007823A1 (en) * 2014-07-09 2016-01-14 Hanning Elektro-Werke Gmbh & Co. Kg Pump assembly
EP2980413A1 (de) * 2014-07-29 2016-02-03 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Zentrifugaler Getriebeverdichter und Verfahren zum Zusammenbau eines zentrifugalen Getriebeverdichters

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2619036A (en) * 1945-09-01 1952-11-25 Goulds Pumps Water system
US2911916A (en) * 1953-10-01 1959-11-10 Sta Rite Products Inc Valve for direct pressure shallow well pumping system
US4052133A (en) * 1975-11-12 1977-10-04 The Gorman-Rupp Company Corrosion and abrasion resistant centrifugal pump

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1876359A1 (de) * 2006-07-04 2008-01-09 Messner GmbH & Co.KG Teichpumpe
WO2008003409A1 (de) * 2006-07-04 2008-01-10 Messner Gmbh & Co. Kg Teichpumpe
EA014206B1 (ru) * 2006-07-04 2010-10-29 Месснер Гмбх & Ко. Кг Прудовой насос
US8182214B2 (en) 2006-07-04 2012-05-22 Messner Gmbh & Co. Kg Pond pump
WO2008043527A1 (en) * 2006-10-10 2008-04-17 Grundfos Management A/S Multistage pump assembly
US20160007823A1 (en) * 2014-07-09 2016-01-14 Hanning Elektro-Werke Gmbh & Co. Kg Pump assembly
CN105257550A (zh) * 2014-07-09 2016-01-20 汉宁电气工厂有限责任两合公司 泵装置
EP2980413A1 (de) * 2014-07-29 2016-02-03 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Zentrifugaler Getriebeverdichter und Verfahren zum Zusammenbau eines zentrifugalen Getriebeverdichters

Also Published As

Publication number Publication date
EP1441130A3 (de) 2007-11-21
ITPD20030010A1 (it) 2004-07-24

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