EP1120572A3 - Centrifugal pump - Google Patents
Centrifugal pump Download PDFInfo
- Publication number
- EP1120572A3 EP1120572A3 EP00121080A EP00121080A EP1120572A3 EP 1120572 A3 EP1120572 A3 EP 1120572A3 EP 00121080 A EP00121080 A EP 00121080A EP 00121080 A EP00121080 A EP 00121080A EP 1120572 A3 EP1120572 A3 EP 1120572A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- pump chamber
- housing
- housing part
- pressure port
- 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- Withdrawn
Links
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Die Erfindung betrifft eine Kreiselpumpe, mit einem aus spritzgusstechnisch verarbeitbarem Kunststoffmaterial bestehenden zumindest zweiteiligen Pumpengehäuse (2), dessen erstes Gehäuseteil (3) mit einem axial angeformten Saugstutzen (5) und einem in etwa tangential an einer Umfangswandung (14) angeformten Druckstutzen (6) einstückig ist und einen Dichtrand (7) aufweist, über den es dicht mit einem zweiten , einen Eletromotor (10) aufnehmenden Gehäuseteil (4) verbunden ist, wobei das Pumpengehäuse (2) einen im wesentlichen zylindrischen fördermitteldurchströmbaren Pumpenraum (9) einschließt, in welchem ein vom Elektromotor angetriebenes Pumpenrad drehbar angeordnet ist. Bei einer bekannten Kreiselpumpe der gattungsgemäßen Art ist der Übergang zwischen der Pumpenkammer und dem Druckstutzen aus fertigungstechnischen Gründen kantig ausgebildet. Dadurch entstehen Wirbel, die den Wirkungsgrad der Pumpe erheblich herabsetzen. Aufgabe der vorliegenden Erfindung ist es bei einer Kreiselpumpe der gattungsgemäßen Art eine wirtschaftliche Fertigungsmöglichkeit zu schaffen und dabei einen sehr guten Wirkungsgrad zu erreichen. Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass innerhalb des durch die beiden Gehäuseteile (3,4) begrenzten Pumpenraumes (9) ein mit einer Rundung (11) versehener Sporn (12) einstückig mit dem zweiten Gehäuseteil derart ausgebildet und im Pumpenraum angeordnet ist, dass er im Übergangsbereich zwischen dem Druckstutzen (6) und dem Pumpenraum (9) am ersten Gehäuseteil einen stetigen und stufenlosen Übergang von der den Pumpenraum begrenzenden Umfangswandung über den Sporn (12) zum Druckstutzen (6) bildet. The invention relates to a centrifugal pump with an at least two-part pump housing (2) made of plastic material that can be processed by injection molding, the first housing part (3) of which has an axially molded suction nozzle (5) and a pressure nozzle (6) formed approximately tangentially on a peripheral wall (14). is in one piece and has a sealing edge (7), via which it is tightly connected to a second housing part (4) receiving an electric motor (10), the pump housing (2) including an essentially cylindrical pump chamber (9) through which conveyable medium can flow, in which a pump wheel driven by the electric motor is rotatably arranged. In a known centrifugal pump of the generic type, the transition between the pump chamber and the pressure port is angular for manufacturing reasons. This creates vortices that significantly reduce the efficiency of the pump. The object of the present invention is to provide an economical production possibility in a centrifugal pump of the generic type and to achieve a very good efficiency. This object is achieved according to the invention in that within the pump chamber (9) delimited by the two housing parts (3, 4), a spur (12) provided with a curve (11) is formed in one piece with the second housing part and arranged in the pump chamber in such a way that it forms in the transition area between the pressure port (6) and the pump chamber (9) on the first housing part a steady and stepless transition from the peripheral wall defining the pump chamber via the spur (12) to the pressure port (6).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10003644 | 2000-01-28 | ||
DE10003644A DE10003644C1 (en) | 2000-01-28 | 2000-01-28 | Electric circulation pump has injection moulded plastics housing has integral spur projecting into pump space for providing smooth transition between inside wall of pump space and pressure connection |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1120572A2 EP1120572A2 (en) | 2001-08-01 |
EP1120572A3 true EP1120572A3 (en) | 2002-09-18 |
Family
ID=7628991
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00121080A Withdrawn EP1120572A3 (en) | 2000-01-28 | 2000-09-28 | Centrifugal pump |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1120572A3 (en) |
DE (1) | DE10003644C1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2195733B1 (en) * | 2001-07-20 | 2005-08-16 | Fagor, S.Coop. | HYDRAULIC PUMP WITH FLOW GUIDE. |
DE102006021245B4 (en) * | 2006-04-28 | 2008-03-06 | Bühler Motor GmbH | rotary pump |
DE102007003413A1 (en) * | 2007-01-23 | 2008-07-24 | Wilo Ag | Pump housing, has intake socket and pressure socket with inner wall with material swelling provided in form of material application, which extends into interior of channel, where swelling forms planar or concave inner surface |
CN103062123A (en) * | 2012-11-07 | 2013-04-24 | 江苏大学 | Centrifugal pump volute structure capable of reducing noises and racial forces |
EP2944825B1 (en) * | 2014-05-12 | 2020-08-12 | Grundfos Holding A/S | Pump housing with three flanges |
CN105221486B (en) * | 2015-11-09 | 2018-05-15 | 温州市海格阀门有限公司 | A kind of centrifugal pump end cap for being exclusively used in home brew manufacture |
CN106194837B (en) * | 2016-07-13 | 2018-07-27 | 佛山市威灵洗涤电机制造有限公司 | Pump case, centrifugal pump and the dish-washing machine of centrifugal pump |
CN112746989B (en) * | 2019-10-29 | 2023-09-19 | 三花亚威科电器设备(芜湖)有限公司 | Pump with a pump body |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1526940A (en) * | 1975-12-18 | 1978-10-04 | British Gas Corp | Centrifugal liquid pumps |
FR2402785A1 (en) * | 1977-09-07 | 1979-04-06 | Julien & Mege | Electrically driven centrifugal pump for central heating - has moulded plastics volute and inlet duct to eye of impeller |
FR2641040A1 (en) * | 1988-12-24 | 1990-06-29 | Skf Gmbh | |
DE29504507U1 (en) * | 1995-03-21 | 1995-05-04 | Grundfos A/S, Bjerringbro | Centrifugal pump housing |
US5785507A (en) * | 1994-09-19 | 1998-07-28 | Dial Manufacturing, Inc. | Evaporative cooler pump |
EP0943809A2 (en) * | 1998-03-16 | 1999-09-22 | TCG UNITECH Aktiengesellschaft | Centrifugal pump |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1158841B (en) * | 1959-06-10 | 1963-12-05 | M U K H Schreiner Saugbagger U | Pump for pumping solid-water mixtures with exchangeable inner housing |
DE1403852A1 (en) * | 1961-08-21 | 1969-01-16 | Licentia Gmbh | Drain pump |
DE1959087A1 (en) * | 1969-11-25 | 1971-05-27 | Hanning Elektro Werke | Housing for motor pumps |
-
2000
- 2000-01-28 DE DE10003644A patent/DE10003644C1/en not_active Expired - Lifetime
- 2000-09-28 EP EP00121080A patent/EP1120572A3/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1526940A (en) * | 1975-12-18 | 1978-10-04 | British Gas Corp | Centrifugal liquid pumps |
FR2402785A1 (en) * | 1977-09-07 | 1979-04-06 | Julien & Mege | Electrically driven centrifugal pump for central heating - has moulded plastics volute and inlet duct to eye of impeller |
FR2641040A1 (en) * | 1988-12-24 | 1990-06-29 | Skf Gmbh | |
US5785507A (en) * | 1994-09-19 | 1998-07-28 | Dial Manufacturing, Inc. | Evaporative cooler pump |
DE29504507U1 (en) * | 1995-03-21 | 1995-05-04 | Grundfos A/S, Bjerringbro | Centrifugal pump housing |
EP0943809A2 (en) * | 1998-03-16 | 1999-09-22 | TCG UNITECH Aktiengesellschaft | Centrifugal pump |
Also Published As
Publication number | Publication date |
---|---|
EP1120572A2 (en) | 2001-08-01 |
DE10003644C1 (en) | 2001-05-10 |
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Legal Events
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Effective date: 20021015 |
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Ref country code: DE Ref legal event code: 8566 |
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18W | Application withdrawn |
Effective date: 20040904 |