EP1616100A1 - Freistrompumpe - Google Patents
FreistrompumpeInfo
- Publication number
- EP1616100A1 EP1616100A1 EP03789237A EP03789237A EP1616100A1 EP 1616100 A1 EP1616100 A1 EP 1616100A1 EP 03789237 A EP03789237 A EP 03789237A EP 03789237 A EP03789237 A EP 03789237A EP 1616100 A1 EP1616100 A1 EP 1616100A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- impeller
- free
- passage
- flow pump
- distance
- 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.)
- Granted
Links
- 239000007788 liquid Substances 0.000 claims abstract description 3
- 230000007423 decrease Effects 0.000 claims description 3
- 230000000717 retained effect Effects 0.000 claims 1
- 239000007787 solid Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2238—Special flow patterns
- F04D29/2244—Free vortex
Definitions
- the invention relates to a free-flow pump, the impeller of which consists of a carrier disk equipped with open blades and the housing wall opposite it on the suction side, maintains such a distance that from the inlet of the free-flow pump to the impeller outlet between the impeller and the housing wall, a free passage of one in the conveying liquid passage contained contained spherical object of a certain size.
- Such a free-flow pump is known from DE 14 53 782 A.
- the support disk of the impeller has a convex surface, which maintains a minimum distance from the housing wall in the inlet area of the pump, which corresponds to the diameter of an imaginary ball. For the rest, a distance corresponding to a ball diameter is maintained between the blades of the impeller that are running straight.
- the invention has for its object to provide a free-flow pump that achieves an increase in efficiency when meeting the requirement for a free passage of a given size.
- This object is achieved in that the passage allowing the free passage of the spherical object with a the minimum extension corresponding to the desired ball passage from the inlet to the impeller outlet through the blading of the impeller.
- the invention is based on the fact that the distance between the impeller and the wall opposite it has a significant influence on the efficiency of the free-flow pump.
- the minimum distance to be implemented here is determined by the height of the blades. If the distance between the impeller and the housing wall were to be reduced to a dimension below the diameter of the imaginary sphere, an impeller with which the minimum distance between the blades is also less than the sphere diameter would no longer meet the requirement for a free sphere passage. In the case of the free-flow pump according to the invention, however, exactly this measure, reduction of the distance between the impeller and the housing wall while maintaining the minimum distance between the blades that is too small for a ball passage, is carried out.
- the invention Based on the knowledge that a partial reduction in the height of individual blades, i.e. the increase in the distance to the housing wall in a partial area, entails less efficiency loss than the increase in the distance in the entire blading, the invention provides only one imaginary ball adapted passage available.
- the passage with the minimum extension follows the course of a single blade of the impeller.
- two or more blades for forming a passage each with the minimum extension are evenly distributed over the impeller.
- the passage cuts the hub body of the impeller with the minimum extent.
- Another advantageous embodiment of the invention is that the distance between the housing wall and the front edges of the higher blades of the impeller decreases with the diameter. This measure serves for optimization: the hub body located in the area of the inlet can only be cut to a limited extent. Therefore, the distance of the impeller must be in this area be relatively large to the housing wall. In the remaining area, however, the housing wall should have the smallest possible distance from the impeller.
- FIG. 2 shows a perspective view of an impeller that can be used in the free-flow pump according to the invention.
- An impeller 2 is fastened on a shaft 3 in the housing 1 of the free-flow pump of FIG. 1.
- the attachment serves a hub body 4, in which a screw 5 engages.
- a plurality of blades 7 are arranged on the support disk 6 of the impeller 2.
- a path is drawn from the inlet to the impeller outlet, which corresponds to a desired ball passage. Since, in the case of the exemplary embodiment in FIG. 1, this track is placed in a single blade 8, it has a front edge 9 which has a slope inclined toward the impeller outlet.
- a cover 10 inserted into the housing 1 on the suction side forms an inlet 11.
- the housing wall 12 of the cover 11 runs conically in such a way that on the one hand the distance (N) to the front edges of the higher blades 7 decreases in diameter, but on the other hand the distance increases the front edge 9 of the blade 8 is approximately constant over the entire course of the blade 8.
- the clear width formed between the front edge 9 and the housing wall 12 corresponds approximately to the minimum extension (M) of the imaginary ball.
- the course of the minimum extension (M) thus represents, so to speak, the path free for the passage of the ball.
- the medium conveyed by the pump, including the fixed admixtures, is fed into a pipe (not shown) via an outlet 13.
- FIG. 2 shows an impeller 14, which represents a variant of the impeller 2 of FIG. 1 in that two such tracks are formed instead of a track for a ball passage.
- the blades 8 are rotationally symmetrical
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10301630A DE10301630A1 (de) | 2003-01-17 | 2003-01-17 | Freistrompumpe |
PCT/EP2003/014108 WO2004065797A1 (de) | 2003-01-17 | 2003-12-12 | Freistrompumpe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1616100A1 true EP1616100A1 (de) | 2006-01-18 |
EP1616100B1 EP1616100B1 (de) | 2010-02-10 |
Family
ID=32602656
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03789237A Expired - Lifetime EP1616100B1 (de) | 2003-01-17 | 2003-12-12 | Freistrompumpe |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1616100B1 (de) |
AR (1) | AR042894A1 (de) |
AU (1) | AU2003293852A1 (de) |
DE (2) | DE10301630A1 (de) |
WO (1) | WO2004065797A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4083430A1 (de) * | 2021-04-28 | 2022-11-02 | Herborner Pumpentechnik GmbH & Co KG | Pumpenlaufrad, gehäuseelement und pumpe hiermit |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0623042D0 (en) * | 2006-11-18 | 2006-12-27 | Weir Pumps Ltd | Mechanical assembly |
EP2497956A1 (de) * | 2011-03-08 | 2012-09-12 | Egger Pumps Technology AG | Freistrompumpe |
DE102015212203A1 (de) | 2015-06-30 | 2017-01-05 | Ksb Aktiengesellschaft | Freistrompumpe |
DE102016225891A1 (de) | 2016-12-21 | 2018-06-21 | KSB SE & Co. KGaA | Freistrompumpe |
DE102016225908A1 (de) | 2016-12-21 | 2018-06-21 | KSB SE & Co. KGaA | Freistrompumpe |
DE102020003847A1 (de) | 2020-06-26 | 2021-12-30 | KSB SE & Co. KGaA | Kreiselpumpe zur Förderung feststoffhaltiger Medien |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL301440A (de) * | ||||
US3167021A (en) * | 1963-04-15 | 1965-01-26 | Allis Chalmers Mfg Co | Nonclogging centrifugal pump |
US3190226A (en) * | 1963-09-13 | 1965-06-22 | Thomas E Judd | Centrifugal pumps |
FR2173365A5 (de) * | 1972-02-21 | 1973-10-05 | Bodin Andre Ets | |
IT8022473A0 (it) * | 1979-06-22 | 1980-05-30 | Klein Schanzlin & Becker Ag | Girante aperta per pompe centrifughe. |
CA1189632A (en) * | 1981-10-22 | 1985-06-25 | Robert Furrer | Apparatus for applying solder to a printed-circuit board |
JPS59165891A (ja) * | 1983-03-10 | 1984-09-19 | Ebara Corp | 渦流ポンプ |
-
2003
- 2003-01-17 DE DE10301630A patent/DE10301630A1/de not_active Withdrawn
- 2003-12-12 AU AU2003293852A patent/AU2003293852A1/en not_active Abandoned
- 2003-12-12 EP EP03789237A patent/EP1616100B1/de not_active Expired - Lifetime
- 2003-12-12 DE DE50312416T patent/DE50312416D1/de not_active Expired - Lifetime
- 2003-12-12 WO PCT/EP2003/014108 patent/WO2004065797A1/de active Application Filing
-
2004
- 2004-01-16 AR ARP040100114A patent/AR042894A1/es active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO2004065797A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4083430A1 (de) * | 2021-04-28 | 2022-11-02 | Herborner Pumpentechnik GmbH & Co KG | Pumpenlaufrad, gehäuseelement und pumpe hiermit |
EP4206470A1 (de) * | 2021-04-28 | 2023-07-05 | Herborner Pumpentechnik GmbH & Co KG | Pumpenlaufrad, gehäuseelement und pumpe hiermit |
Also Published As
Publication number | Publication date |
---|---|
DE50312416D1 (de) | 2010-03-25 |
WO2004065797A1 (de) | 2004-08-05 |
DE10301630A1 (de) | 2004-07-29 |
AR042894A1 (es) | 2005-07-06 |
AU2003293852A1 (en) | 2004-08-13 |
EP1616100B1 (de) | 2010-02-10 |
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