EP0864760A2 - Carter de pompe moulable pour ensemble motopompe, pour montage sur la paroi d'un dispositif - Google Patents

Carter de pompe moulable pour ensemble motopompe, pour montage sur la paroi d'un dispositif Download PDF

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Publication number
EP0864760A2
EP0864760A2 EP98104342A EP98104342A EP0864760A2 EP 0864760 A2 EP0864760 A2 EP 0864760A2 EP 98104342 A EP98104342 A EP 98104342A EP 98104342 A EP98104342 A EP 98104342A EP 0864760 A2 EP0864760 A2 EP 0864760A2
Authority
EP
European Patent Office
Prior art keywords
housing
pump
motor
wall
pump housing
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Withdrawn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
EP98104342A
Other languages
German (de)
English (en)
Other versions
EP0864760A3 (fr
Inventor
Niels Due Jensen
Finn Hoj
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
Publication of EP0864760A2 publication Critical patent/EP0864760A2/fr
Publication of EP0864760A3 publication Critical patent/EP0864760A3/fr
Withdrawn legal-status Critical Current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
    • 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
    • F04D29/42—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 is based on a castable pump housing the preamble of claim 1.
  • Such a pump housing for a motor pump unit is in the German utility model DE-U-295 04 507.8.
  • This housing comprises two main housing parts, an outer one Housing part and an inner housing part usable therein with the central suction port and the pressure port close to the housing wall. Both housing parts are shaped on the inside so that they Cavity for receiving the pump impeller and the spiral delivery channel, which takes up the steadily increasing flow rate essentially expanded axially, limit.
  • These two housing parts are made by casting, except for the cavity for the pump impeller also all other cavities and passages the housing parts are designed so that during the casting process no lost casting cores are required.
  • a disadvantage of this Pump housing is, however, that a two-part for each housing part Mold is required, which is due to double the cost of the mold there are increased manufacturing costs for the pump housing.
  • Another disadvantage is that the inner housing part is a loose part, so that this part during transport and storage of the unit, can be lost before it is installed. Furthermore, the Material consumption when casting two housing parts is relatively high.
  • a similar pump housing for a motor pump unit is in the EP-A-0 218 031 which also has two housing parts.
  • the boiler-side housing part shows the suction and the pressure connection, the spiral feed channel connecting the two connecting pieces and the Cavity for the pump impeller.
  • This part of the case that also One lot is, except on its boiler side, by the second Housing part completely surrounded and both with the drive motor and also screwed to the boiler.
  • the spiral conveyor channel not only in the axial direction, but in undercutting shape also in the radial direction. From one radial expansion of the spiral conveyor channel results in the disadvantage that so-called lost casting cores are required for its manufacture are, which must also be disposed of in an environmentally friendly manner.
  • two molds are required in this case, too produce the entire housing with a correspondingly higher material consumption to be able to.
  • the object of the invention is to improve an introduction mentioned housing for a motor pump unit, wherein the housing has no captive parts and is cheaper can be manufactured.
  • the housing according to the invention consists of only a single housing part, has therefore no loose part, and is so constructed that its all open cavities and passages no radial Have extensions in the sense of undercuts, so that the housing without lost casting cores and only with one two-part mold can be made. All necessary Casting cores can open after the casting process the mold can be removed axially. Overall, this results in a faster and cheaper production of the mold.
  • the cheaper one Manufacturing is also due to the fact that the consumption of Casting material is less compared to the case when two Casting molds for two housing parts must be used. Of the lower material consumption is also molded on the one piece Transverse wall, which supports the two connecting pieces of the pump housing, attributed.
  • An advantageous embodiment of the housing according to the invention is that the peripheral wall of the housing one of the motor-side housing opening outgoing cylindrical or itself slightly tapered inner wall surface for circumferential Has limitation of the cavity for the pump impeller.
  • the cavity for the pump impeller in a simple way producible, and it can be already attached to the shaft of the motor Pump impeller from the motor side of the housing Housing are introduced.
  • Another advantageous embodiment of the pump housing exists in that there are several axial through holes for receiving Has fastening screws with which the housing between the Motor and the device is clamped when the motor pump unit on a boiler as a device with externally controlled Forced circulation of the heating current is mounted.
  • This also results in a better liquid seal of the housing to both the boiler and the drive motor achievable.
  • the fastening screws can serve the housing during transportation and the storage of the motor pump unit captive on Fasten housing.
  • the unit 1 shows a motor pump unit 1 with a centrifugal pump 2 and an electric drive motor 3, the impeller 4 of the Pump on the protruding end of the motor shaft 5 is attached.
  • the unit 1 is intended for use on a flat wall surface 6 a device with externally controlled forced circulation to be attached to a flow of liquid, e.g. B. on the boiler 8 of a hot water heating system 7.
  • the boiler 8 is only partially shown and has u. a. one leading to the pump 2 Inlet channel 9 and a return channel from the pump 10th
  • the pump 2 comprises a one-piece, castable Housing 11 with two opposite mounting sides 12a and 12b, with which it on the boiler 8 or on the mounting flange 13 of the motor 3 is present.
  • the housing itself includes one Circumferential wall 14 and an inner transverse wall 15, the transverse wall the central suction port 16 and parallel to the axis near the Housing wall 14 has the pressure port 17 of the pump 2.
  • the housing 11 On the motor side, the housing 11 has an opening 18 from which a cavity 19 for receiving the pump impeller 4 after stretches inside.
  • the diameter of the opening 18 and the cavity 19 is chosen so that the housing is conveniently already on the shaft 5 mounted pump impeller can be pushed if the housing is assembled.
  • there is sufficient play between the circumference of the pump impeller and the circumferential surface 19a of the cavity 19 is provided to the from the pump impeller emerging flow to provide enough space for this in the usual delivery channel 20, the two pump nozzles 16 and 17 connects with each other, can occur.
  • the delivery channel 20 is designed so that it only continuously expanded in the axial direction, so that he on Pressure port 17 has its greatest depth.
  • he can also be designed so that it only widens in the radial direction, around the increasing flow in the outflow direction to record.
  • the undercut-free design also applies to the cavity 19 for receiving the pump impeller 4, which, starting from its motor-side opening 18, either cylindrical or conical can be tapered.
  • This makes it possible for the for the formation of the cavity 19 and the delivery channel 20th provided casting cores for the casting production of the pump housing 11 only pulled axially out of the cast housing after the casting process need to be.
  • the transverse wall 15 also partially the boundary surface 21 for the delivery channel 20 forms. The remaining boundary surface for the delivery channel is by axially extending the inner peripheral surface 19a of the Cavity 19 formed for the pump impeller 4.
  • the cavity 19 extends from the motor side Opening 18 of housing 11.
  • a recess 22 can be provided, into which a motor projection protrudes to center the motor in the pump housing as in Fig. 1 is shown above.
  • the recess 22 is of minor dimensions, so that the essential cylindrical or conical shape of the cavity 19 remains.
  • the peripheral wall 14 of the one-piece pump housing 11 as a four-polygon with sides curved outwards. This creates four Corner areas, each having an axial through hole 23. By these holes are passed through fastening screws 24 (Fig. 1) to the motor pump unit 1 on the device shown in Example to be attached to the boiler 8.
  • the pump housing 11 Provide mounting flanges on the boiler and motor side be the through holes for attachment in a conventional manner of the one-piece pump housing both on the boiler 8 and have on the motor 3.
  • the pump housing 11 provided on the back with several stiffening ribs 25 in order to to stabilize the suction port 16 in its central position.
  • the pump housing open cavities. All cavities of the pump house, so both those who are open to the engine side and those who that are open to the boiler side are undercut-free trained so that all after casting the pump housing Permanent casting cores for their removal on both sides of the housing can only be pulled out axially.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
EP98104342A 1997-03-15 1998-03-11 Carter de pompe moulable pour ensemble motopompe, pour montage sur la paroi d'un dispositif Withdrawn EP0864760A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29704753U 1997-03-15
DE29704753U DE29704753U1 (de) 1997-03-15 1997-03-15 Gießbares Pumpengehäuse für ein Motorpumpenaggregat zur Montage an einer ebenen Wandfläche einer Vorrichtung

Publications (2)

Publication Number Publication Date
EP0864760A2 true EP0864760A2 (fr) 1998-09-16
EP0864760A3 EP0864760A3 (fr) 1999-08-18

Family

ID=8037557

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98104342A Withdrawn EP0864760A3 (fr) 1997-03-15 1998-03-11 Carter de pompe moulable pour ensemble motopompe, pour montage sur la paroi d'un dispositif

Country Status (2)

Country Link
EP (1) EP0864760A3 (fr)
DE (1) DE29704753U1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1293677A3 (fr) * 2001-09-14 2004-01-14 Wilo Ag Pompe incorporée dans un corps de vanne
WO2015078541A1 (fr) * 2013-11-29 2015-06-04 Fte Automotive Gmbh Pompe à liquides entraînée par un moteur électrique, en particulier pour la lubrification forcée de la boîte de vitesses de véhicules automobiles
EP3183458B1 (fr) 2014-08-18 2018-08-01 GETRAG B.V. & Co. KG Dispositif d'alimentation en fluide pour boîte de vitesses d'un véhicule automobile

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19819723A1 (de) * 1998-05-02 1999-11-04 Wilo Gmbh Befestigung zwischen Pumpe und Motor
DE102005049203A1 (de) * 2005-10-14 2007-04-19 Ryll-Tech Gmbh Heizkessel zum Erhitzen von Flüssigkeit, Verfahren zur Fertigung eines Heizkessels
EP2713058B1 (fr) 2012-09-26 2016-11-30 Pierburg Pump Technology GmbH Tête de pompe pour une pompe centrifuge ainsi que procédé de fabrication d'une telle tête de pompe
DE102014223514A1 (de) * 2014-11-18 2016-05-19 Zf Friedrichshafen Ag Wälzlageraufnahme für eine Wellenlagerung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0218031A1 (fr) 1985-09-21 1987-04-15 WILO-Werk GmbH & Co. Pumpen- und Apparatebau Pompe centrifuge
DE29504507U1 (de) 1995-03-21 1995-05-04 Grundfos A/S, Bjerringbro Gehäuse für Kreiselpumpen

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1225596B (it) * 1988-09-26 1990-11-22 Calpeda A Spa Pompa autoadescante ad eiettore.
DE9416551U1 (de) * 1994-10-14 1994-12-01 Wilo Gmbh, 44263 Dortmund Kreiselpumpe mit Verschraubung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0218031A1 (fr) 1985-09-21 1987-04-15 WILO-Werk GmbH & Co. Pumpen- und Apparatebau Pompe centrifuge
DE29504507U1 (de) 1995-03-21 1995-05-04 Grundfos A/S, Bjerringbro Gehäuse für Kreiselpumpen

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1293677A3 (fr) * 2001-09-14 2004-01-14 Wilo Ag Pompe incorporée dans un corps de vanne
WO2015078541A1 (fr) * 2013-11-29 2015-06-04 Fte Automotive Gmbh Pompe à liquides entraînée par un moteur électrique, en particulier pour la lubrification forcée de la boîte de vitesses de véhicules automobiles
JP2017500474A (ja) * 2013-11-29 2017-01-05 エフティーイー・オートモーティブ・ゲーエムベーハーＦＴＥ ａｕｔｏｍｏｔｉｖｅ ＧｍｂＨ 特に自動車両のマニュアル変速機の強制潤滑のための、電動機駆動流体ポンプ
US10393120B2 (en) 2013-11-29 2019-08-27 Fte Automotive Gmbh Electric motor driven liquid pump, in particular for the forced lubrication of a manual transmission for motor vehicles
EP3183458B1 (fr) 2014-08-18 2018-08-01 GETRAG B.V. & Co. KG Dispositif d'alimentation en fluide pour boîte de vitesses d'un véhicule automobile

Also Published As

Publication number Publication date
DE29704753U1 (de) 1997-05-15
EP0864760A3 (fr) 1999-08-18

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