EP1120572A2 - Pompe centrifuge - Google Patents

Pompe centrifuge Download PDF

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Publication number
EP1120572A2
EP1120572A2 EP00121080A EP00121080A EP1120572A2 EP 1120572 A2 EP1120572 A2 EP 1120572A2 EP 00121080 A EP00121080 A EP 00121080A EP 00121080 A EP00121080 A EP 00121080A EP 1120572 A2 EP1120572 A2 EP 1120572A2
Authority
EP
European Patent Office
Prior art keywords
spur
pump
housing part
centrifugal pump
peripheral wall
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Withdrawn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
EP00121080A
Other languages
German (de)
English (en)
Other versions
EP1120572A3 (fr
Inventor
Andreas Eckbauer
Gunther Martin
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.)
Buehler Motor GmbH
Original Assignee
Buehler Motor GmbH
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 Buehler Motor GmbH filed Critical Buehler Motor GmbH
Publication of EP1120572A2 publication Critical patent/EP1120572A2/fr
Publication of EP1120572A3 publication Critical patent/EP1120572A3/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Withdrawn legal-status Critical Current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
    • F04D29/40—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
    • F04D29/428—Discharge tongues

Definitions

  • the invention relates to a centrifugal pump with a processable from injection molding Plastic material existing multi-part pump housing, the first housing part with an axially formed suction nozzle and one approximately tangential to one Is molded in one piece and has a sealing edge, over which it is sealed with a second housing part receiving an electric motor is connected, the pump housing having a substantially cylindrical includes pump chamber through which the medium can flow, the inner contour of which is spiral and in which a pump wheel driven by the electric motor is rotatably arranged.
  • the object of the present invention is therefore in a centrifugal pump Generic type to create an economical manufacturing possibility while doing so to achieve a very good efficiency.
  • the curvature of the inner contour of the Spur constantly from the curvature of the inner contour of the peripheral wall to the curvature the inner contour of the discharge nozzle and the inner contour of the spur to form as part of the spiral inner contour of the peripheral wall.
  • the peripheral wall of the pump chamber is cylindrical in order to Injection molding process can be easily manufactured without an undercut. Your here The resulting rectangular cross-section in the area of the pressure port goes continuously and harmoniously into the circular shape of the mentioned pressure port.
  • the spur in the area of Pressure port essentially semi-cylindrical and on the opposite side to be tapered. This largely avoids turbulence thus increasing the efficiency.
  • the tapered contour does not meet the strength requirements. It is therefore provided that the spur is semi-cylindrical and in the area of the pressure port the opposite side to one that ensures sufficient stability Forming material thickness to taper.
  • the contour of the spur is part of a spiral channel on the inside. With that she leaves from the cylindrical wall of the spiral channel to the approximately semi-cylindrical trained rounding over. Its outer contour lies on the wall of the pump head and the entire spur is designed in such a way that it fits into the Inserts the wall of the pump head without affecting its strength.
  • Fig. 1 shows the first housing part 3 of a known centrifugal pump, consisting of a axially formed suction nozzle 5, an approximately tangentially molded pressure nozzle 6 and a substantially cylindrical, radially delimited by the wall 14 spiral pump chamber 9.
  • the transition region 13 between the wall 14 and the pressure port 6 is formed by a sharp edge 15. This edge 15 affects unfavorable on the efficiency of the pump, because at this point the laminar Flow is disturbed and the flow resistance increases significantly.
  • Fig. 2 shows a spatial representation of a fluid mechanically more favorable solution for the first housing part 3, consisting of an axially molded suction nozzle 5, a Pressure port 6 and a substantially cylindrical, radially through a Circumferential wall 14 delimited spiral pump chamber 9.
  • a transition area 13 forms a spur 12 between the peripheral wall 14 and the pressure port 6 a round contour 11.
  • the spur 12 is shaped that its curvature continuously from the peripheral wall 14 to an inner contour 20 of the Pressure port 6 passes. Because of the tongue that tapers here of a tool positive is the shorter tool life a production of this housing part 3 is uneconomical.
  • the spur 12 is in the Transition area between the narrowest and the widest point of the spiral Gap between a pump wheel 8 and the inner contour 20 of the Circumferential wall 14 arranged.
  • FIG. 3 shows a second housing part 4, which can be produced by injection molding Centrifugal pump according to the invention, which is functionally similar to the centrifugal pump from FIG. 2.
  • the second housing part 4 is in one piece with a spur 12 which has a curve 11. Furthermore, the second housing part has a sealing edge 7 and a rotor space 18, wherein the rotor space 18 is delimited by a can 16, which in the air gap between a rotor and a stator (not shown) of an electric motor 10 is arranged.
  • the solution shown is applicable to both internal rotor and external rotor motors.
  • Fig. 4 shows a first housing part 3 of the centrifugal pump according to the invention
  • the one with the second housing part 4 one-piece spur 12 is in a transition region 13 between a peripheral wall 14 and a pressure nozzle 6 shown arranged; it hugs the inside of the Circumferential wall 14.
  • Fig. 5 shows the centrifugal pump according to the invention with the pump housing 2, consisting from the first housing part 3 with the pressure port 6 and the second housing part 4 with the spur 12 and a built-in impeller 8.
  • Fig. 6 shows an overall view of the centrifugal pump according to the invention, with the Pump housing 2, consisting of the first housing part 3 with the pressure port 6, the Suction nozzle 5 and the second housing part 4, which contains the electric motor 10, the second housing part 4 consisting essentially of the rotor space and one Recording space for the electric motor 10, the second housing part 4 one-piece can 16 the rotor space from the receiving space for the electric motor 10 separates.
  • the two housing parts 3, 4 are outside of their sealing edge Fastening recesses 22 for receiving fasteners (not shown).
  • the rotor of the electric motor 10 is a permanent magnet rotor and the rotor chamber 18 is at least in proper operation with the pumped product Medium filled.
  • the centrifugal pump 1 is a swirl pump, the scope of the invention is not limited to the example shown. It is among other things also possible that the Suction nozzle 5 is angled.
  • Fig. 7 shows the first housing part 3 of the centrifugal pump according to the invention, with the Pressure port 6, mounting recesses 22, the peripheral wall 14, the spur 12, a receptacle 21 for mounting the pump wheel 8 and the sealing edge 7.
  • Housing part 3 is the one-piece with the housing part 4 spur 12, as in assembled state arranged, shown.
  • the continuation is clearly visible the spiral-shaped inner contour 20 of the peripheral wall 14 through the inner contour 19 of the Spurs 12.
  • a rounding 23 which prevents a Notch effect is provided in the housing part 3. You can clearly see the development of the Spiral, starting in the area of spur 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP00121080A 2000-01-28 2000-09-28 Pompe centrifuge Withdrawn EP1120572A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10003644A DE10003644C1 (de) 2000-01-28 2000-01-28 Kreiselpumpe
DE10003644 2000-01-28

Publications (2)

Publication Number Publication Date
EP1120572A2 true EP1120572A2 (fr) 2001-08-01
EP1120572A3 EP1120572A3 (fr) 2002-09-18

Family

ID=7628991

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00121080A Withdrawn EP1120572A3 (fr) 2000-01-28 2000-09-28 Pompe centrifuge

Country Status (2)

Country Link
EP (1) EP1120572A3 (fr)
DE (1) DE10003644C1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103062123A (zh) * 2012-11-07 2013-04-24 江苏大学 一种降噪降径向力离心泵蜗壳结构
CN105221486A (zh) * 2015-11-09 2016-01-06 温州市海格阀门有限公司 一种专用于家酿啤酒制造的离心泵端盖
CN112746989A (zh) * 2019-10-29 2021-05-04 三花亚威科电器设备（芜湖）有限公司 泵

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2195733B1 (es) * 2001-07-20 2005-08-16 Fagor, S.Coop. Bomba hidraulica con guiador de flujo.
DE102006021245B4 (de) * 2006-04-28 2008-03-06 Bühler Motor GmbH Kreiselpumpe
DE102007003413A1 (de) * 2007-01-23 2008-07-24 Wilo Ag Pumpengehäuse aus Glasfaser-Spritzguss
EP2944825B1 (fr) * 2014-05-12 2020-08-12 Grundfos Holding A/S Boîtier de pompe doté de trois brides
CN106194837B (zh) * 2016-07-13 2018-07-27 佛山市威灵洗涤电机制造有限公司 离心泵的泵壳、离心泵及洗碗机

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1526940A (en) * 1975-12-18 1978-10-04 British Gas Corp Centrifugal liquid pumps
FR2402785A1 (fr) * 1977-09-07 1979-04-06 Julien & Mege Pompe centrifuge
FR2641040A1 (fr) * 1988-12-24 1990-06-29 Skf Gmbh
DE29504507U1 (de) * 1995-03-21 1995-05-04 Grundfos A/S, Bjerringbro Gehäuse für Kreiselpumpen
US5785507A (en) * 1994-09-19 1998-07-28 Dial Manufacturing, Inc. Evaporative cooler pump
EP0943809A2 (fr) * 1998-03-16 1999-09-22 TCG UNITECH Aktiengesellschaft Pompe centrifuge

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1158841B (de) * 1959-06-10 1963-12-05 M U K H Schreiner Saugbagger U Pumpe zur Foerderung von Feststoff-Wasser-Gemischen mit auswechselbarem Innengehaeuse
DE1403852A1 (de) * 1961-08-21 1969-01-16 Licentia Gmbh Laugenpumpe
DE1959087A1 (de) * 1969-11-25 1971-05-27 Hanning Elektro Werke Gehaeuse fuer Motorpumpen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1526940A (en) * 1975-12-18 1978-10-04 British Gas Corp Centrifugal liquid pumps
FR2402785A1 (fr) * 1977-09-07 1979-04-06 Julien & Mege Pompe centrifuge
FR2641040A1 (fr) * 1988-12-24 1990-06-29 Skf Gmbh
US5785507A (en) * 1994-09-19 1998-07-28 Dial Manufacturing, Inc. Evaporative cooler pump
DE29504507U1 (de) * 1995-03-21 1995-05-04 Grundfos A/S, Bjerringbro Gehäuse für Kreiselpumpen
EP0943809A2 (fr) * 1998-03-16 1999-09-22 TCG UNITECH Aktiengesellschaft Pompe centrifuge

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103062123A (zh) * 2012-11-07 2013-04-24 江苏大学 一种降噪降径向力离心泵蜗壳结构
CN105221486A (zh) * 2015-11-09 2016-01-06 温州市海格阀门有限公司 一种专用于家酿啤酒制造的离心泵端盖
CN112746989A (zh) * 2019-10-29 2021-05-04 三花亚威科电器设备（芜湖）有限公司 泵
CN112746989B (zh) * 2019-10-29 2023-09-19 三花亚威科电器设备（芜湖）有限公司 泵

Also Published As

Publication number Publication date
DE10003644C1 (de) 2001-05-10
EP1120572A3 (fr) 2002-09-18

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