EP0772743A1 - Fluid pump - Google Patents
Fluid pumpInfo
- Publication number
- EP0772743A1 EP0772743A1 EP96900268A EP96900268A EP0772743A1 EP 0772743 A1 EP0772743 A1 EP 0772743A1 EP 96900268 A EP96900268 A EP 96900268A EP 96900268 A EP96900268 A EP 96900268A EP 0772743 A1 EP0772743 A1 EP 0772743A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotation
- pump impeller
- channel
- respect
- axis
- 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
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
- F04D5/00—Pumps with circumferential or transverse flow
- F04D5/002—Regenerative 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
- F04D5/00—Pumps with circumferential or transverse flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D5/00—Pumps with circumferential or transverse flow
- F04D5/002—Regenerative pumps
- F04D5/007—Details of the inlet or outlet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2250/00—Geometry
- F05B2250/50—Inlet or outlet
- F05B2250/503—Inlet or outlet of regenerative pumps
Definitions
- the invention relates to a liquid pump according to the preamble of claim 1.
- Such a liquid pump is known from US Pat. No. 5,310,308.
- This liquid pump serves to deliver fuel and has a pump impeller which is provided with vanes and is driven in rotation.
- the pump impeller is arranged in a pump chamber which is delimited in the direction of the axis of rotation of the pump run by a wall part in each case.
- a sucking opening is formed in one wall part and an outlet opening is formed in the other wall part.
- a conveying channel extending in the circumferential direction from the sucking opening to the outlet opening is formed in the end faces of the two wall parts facing the pump impeller.
- the sucking opening opens into the beginning of the conveying channel of one wall part and the outlet opening opens into the end of the conveying channel of the other wall part.
- the outlet opening has a feed channel into which it opens in the direction of rotation of the pump impeller. bordering opening wall, which ends at the end face of the wall part facing the pump impeller in an edge which is rounded. This opening wall also runs approximately perpendicular to the end face of the wall part facing the pump impeller.
- the liquid pump according to the invention with the features according to claim 1 has the advantage that the inclined arrangement of the inner portion of the edge of the outlet opening achieves a more favorable flow pattern in the area of the outlet opening and the liquid pump has a higher flow rate than the known liquid pump ⁇ pressure and has a higher efficiency.
- FIG. 1 shows a section of a liquid pump in a longitudinal section
- FIG. 2 shows a section through the liquid pump along the line II-II in FIG. 1 in the area of the outlet opening
- FIG. 3 shows a section through the liquid pump along the line III-III in FIG. 1 at the end of the conveyor channel
- FIG. 4 in detail the liquid pump in a cylinder jacket section along the line IV-IV in FIG. 2 and FIG. 3.
- a liquid pump shown in FIGS. 1 to 4 which is used in particular for conveying fuel from a storage tank to the internal combustion engine of a motor vehicle, has a pump impeller 10, which, starting from its two end faces, has a ring each with a distance from one another over the top Has circumference of the pump impeller 10 arranged vanes 12 or blades.
- the wings 12 can be connected to one another at their radially outer ends via a ring 13.
- the pump impeller 10 is driven, for example, by an electric motor, not shown, via a shaft 14 rotating around an axis 16.
- the pump impeller 10 is arranged in a pump chamber 17 which is delimited in the direction of the axis of rotation 16 of the pump impeller 10 by a wall part 19 and 20, respectively.
- the pump chamber 17 is through a limited cylindrical wall part 22, which can be arranged as a separate ring between the two wall parts 19 and 20 or as shown in Figure 1 is integrally formed with one of the wall parts 19 or 20.
- the wall part 20 arranged towards the drive motor is designed as an intermediate housing and the other wall part 19 is designed as an intake cover.
- the shaft 14 driving the pump impeller 10 projects through the intermediate housing 20 into the pump chamber 17.
- annular delivery channel 25 is formed, which lies opposite the wing rim 12 of the pump impeller 10 and in the beginning of which a suction opening 26 opens which is open to the outside of the liquid pump.
- annular delivery channel 29 is likewise formed opposite the wing ring 12 of the pump impeller 10, into which an outlet opening 30 opens at the end of the latter.
- the conveying channels 25 and 29 are arranged approximately congruently and extend in the direction of rotation 11 of the pump impeller 10 from the infant opening 26 to the outlet opening 30.
- the conveying channels 25 and 29 are in the area between the infant opening 26 and the outlet opening 30 through an interrupter 32 and 33 separated from each other.
- the conveyor channels 25 and 29 are approximately semicircular in cross section.
- FIG. 2 shows an enlarged cross section through the liquid pump, in which the intermediate housing 20 can be seen, with the delivery channel 29 formed therein.
- the delivery channel 29 is radially inward to the axis of rotation 16 of the pump impeller 10 through an inner edge 34 bounded and outwardly by an outer edge 35.
- the central region of the conveying channel 29 in the radial direction with respect to the axis of rotation 16 is indicated by its center line 36. As shown in FIG.
- the outlet opening 30 runs in a channel-like manner from the delivery channel 29 to the outer surface 39 of the intermediate housing 20, the outlet opening 30 being arranged inclined with respect to the axis of rotation 16 of the pump impeller 10, specifically in the direction of rotation 11 of the pump impeller 10 from the End face 28 of the intermediate housing 20 towards its outer surface 39.
- the wall 40 delimiting the outlet opening 30 in the direction of rotation 11 is inclined at an angle ⁇ of approximately 20 to 40 ° to the end face 28 of the intermediate housing 20 facing the pump impeller 10.
- the wall 40 can taper to the end face 28 or, as shown in FIG. 4, the transition from the wall 40 to the end face 28 can also be rounded.
- the outlet opening 30 is designed in such a way that its effective flow cross-section downstream remains constant between the points labeled A and B in FIG. 4 or only increases slightly, that is to say by no more than about 20%.
- the wall 41 delimiting the outlet opening 30 counter to the direction of rotation 11 is arranged inclined at approximately the same angle ⁇ as the wall 40.
- the outlet opening 30 is approximately circular in cross section.
- the wall 40 delimiting the outlet opening 30 in the direction of rotation 11 runs out on the end face 28 of the intermediate housing 20 facing the pump impeller 10 in an edge 42 which forms the transition from the delivery channel 29 to the interrupter 33.
- the edge 42 has an inner edge section 42a which extends from the inner edge 34 of the conveyor channel 29 to its central region 36 and which is opposite an imaginary radial arrangement, which is shown in dash-dot lines in FIG drawn in and designated 42 ', is inclined in the direction of rotation 11 of the pump impeller 10.
- the inner edge section 42a is arranged at an angle ⁇ of approximately 20 to 50 °, in particular of approximately 30 to 40 ° in the direction of rotation 11, inclined to the radial arrangement.
- the angle ß is included referred to the central region 36 of the conveyor channel 29 as the center.
- the inner edge section 42a can, as shown in FIG. 2, be slightly curved, in particular when viewed in the direction of rotation 11, convexly curved, and the transition from the inner edge 34 of the conveyor channel 29 to the edge section 42a is rounded.
- the inner edge section 42a is thus approximately normal, that is to say perpendicular to the resultant path lines of the flow of the liquid conveyed by the liquid pump, which are indicated in FIG. 2 by arrows 43, so that the flow of the liquid in the inner section of the conveying channel 29 is led out of the pump at an early stage and thus a re-entry into the spaces between the vanes 12 of the impeller 10 is prevented.
- the mass flow portion of the circulating liquid in the interrupter area 32, 33 is significantly reduced, which leads to significantly lower pressure surges in the interrupter area 32, 33, since less kinetic energy of the circulation flow has to be reduced in the interrupter area. This is associated with a significant reduction in noise.
- the edge 42 When viewed in the radial direction with respect to the axis of rotation 16, the edge 42 has an outer edge starting from the central region 36 of the conveying channel 29 towards its outer edge 35
- the outer edge section 42b runs further than the imaginary straight radial extension of the inner edge section 42a drawn in with a broken line, in the direction of rotation 11 of the pump impeller 10, so that the delivery channel 29 on its outer edge 35 continues to rotate relative to its inner edge 34 Direction 11 extending extension 44.
- the outer edge section 42b extends on the outer edge 35 of the conveying channel 29 in the direction of rotation 11 by a distance s than in the case of an imaginary rectilinear extension of the inner edge section 42a.
- the distance s corresponds approximately to half to the entire width b of the conveyor channel 29.
- the width b of the conveyor channel 29 in front of the area of the outlet opening 30 is taken as a basis.
- the outer edge section 42b is curved, preferably with a course in the form of a mirror-inverted S when viewed in the direction of rotation 11, and runs toward the outer edge 35 of the conveyor channel 29 approximately radially with respect to the axis of rotation 16.
- FIG. 3 shows an enlarged cross section through the liquid pump, in which the suction cover 19 can be seen, with the delivery channel 25 formed therein.
- the delivery channel 25 is radially inward to the axis of rotation 16 of the pump impeller 10 through an inlet inner edge 46 and to the outside by an outer edge 47.
- the central region of the conveying channel 25 in the radial direction with respect to the axis of rotation 16 is indicated by the center line 48 thereof.
- the delivery channel 25 is delimited at its end in the direction of rotation 11 of the pump impeller 10 by a wall 50, which ends at the end face 24 of the suction cover 19 facing the pump impeller 10 in an edge 52 which marks the transition from the delivery channel 25 to the Interrupter 32 forms.
- the wall 50 extends from the base of the conveying channel 25 to the end face 24 of the suction cover 19 in the direction of rotation 11.
- the edge 52 has an inner section 52a which extends from the inner edge 46 of the conveyor channel 25 to its central region 48 and which is opposite an imaginary radial arrangement which is shown in FIG dash-dotted line and designated 52 ', is inclined in the direction of rotation 11 of the pump impeller 10.
- the inner edge section 52a is at an angle ⁇ of approximately 20 to 50 °, in particular approximately 30 to 40 ° in the direction of rotation 11 arranged inclined to the radial arrangement.
- the angle ⁇ is related to the central region 48 of the delivery channel 25 as the center.
- the inner edge section 52a can be of slightly curved design, in particular when viewed in the direction of rotation 11, it has a convex curve, and the transition from the inner edge 46 of the conveying channel 25 to the edge section 52a is rounded.
- the inner edge section 52a on the suction cover 19 is thus, like the inner edge section 42a on the intermediate housing 20, also arranged approximately normal to the resulting path lines of the conveyed liquid, so that here the overflow to the outlet opening 30 in the intermediate housing 20 is initiated as early as possible.
- the edge 52 has an outer edge section 52b, starting from the central region 48 of the conveying channel 25 towards its outer edge 47.
- the outer edge section 52b runs in relation to the imaginary straight radial extension of the inner one drawn in with a broken line
- Edge section 52a further in the direction of rotation 11 of the pump impeller 10, so that the delivery channel 25 has on its outer edge 47 an extension 54 which extends further in the direction of rotation 11 relative to its inner edge 46.
- the outer edge section 52b extends in the direction of rotation 11 on the outer edge 47 of the conveying channel 25 by a distance 1 than when the inner edge section 52a is thought to be linearly extended.
- the distance 1 corresponds approximately to half to the full width d of the conveyor channel 25.
- the width b of the conveyor channel 25 is used as a basis in front of its end region.
- the outer edge section 52b is curved, preferably with an approximately s-shaped course when viewed in the direction of rotation 11, and runs approximately radially with respect to the axis of rotation 16 toward the outer edge 47 of the conveyor channel 25.
- the extension 54 of the conveyor channel 25 is approximately in cross section 96/24770 PCI7DE96 / ⁇ 0028
- the wall 50 is arranged inclined in such a way that it extends in the central area 48 of the conveyor channel 25 in the direction of rotation 11 over an area which extends approximately half to the entire width b of the conveyor channel 25.
- the edge 42, which forms the transition of the delivery channel 29 to the interrupter 33 on the intermediate housing 20 and the edge 52, which forms the transition of the delivery channel 25 to the interrupter 32 on the suction cover 19, are preferably in the circumferential direction with respect to the axis of rotation 16 of the pump impeller 10 arranged offset to each other.
- the edge 42 on the intermediate housing 20 is arranged in the direction of rotation 11 by an angle ⁇ after the edge 52 on the suction cover 19.
- the angle ⁇ in the central region 36 or 48 of the conveyor channels 25 and 29 is approximately 5 to 15 °.
- the beginning of the conveying channel 29, viewed in the direction of the axis of rotation 16 of the pump impeller 10, is arranged approximately congruently with the beginning of the conveying channel 25, into which the feeding opening 24 opens.
- the above-described design of the end region of the conveying channel 25 in the suction cover 19 also reduces the noise generated by the liquid pump during its operation, since the favorable flow guidance in particular does not excite or only slightly excite the suction cover 19 becomes.
- the liquid pump sucks fuel through the suction opening 26 in the suction cover 19, which fuel is conveyed in the delivery channels 25 and 29.
- the fuel flows out through the outlet opening 30 under increased pressure, flowing through the drive motor (not shown) and reaching the internal combustion engine via lines (not shown).
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19504564A DE19504564A1 (en) | 1995-02-11 | 1995-02-11 | Liquid pump |
DE19504564 | 1995-02-11 | ||
PCT/DE1996/000028 WO1996024770A1 (en) | 1995-02-11 | 1996-01-11 | Fluid pump |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0772743A1 true EP0772743A1 (en) | 1997-05-14 |
EP0772743B1 EP0772743B1 (en) | 2000-04-05 |
Family
ID=7753711
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96900268A Expired - Lifetime EP0772743B1 (en) | 1995-02-11 | 1996-01-11 | Fluid pump |
Country Status (8)
Country | Link |
---|---|
US (1) | US5785490A (en) |
EP (1) | EP0772743B1 (en) |
JP (1) | JP3734506B2 (en) |
KR (1) | KR100382682B1 (en) |
CN (1) | CN1071421C (en) |
BR (1) | BR9605306A (en) |
DE (2) | DE19504564A1 (en) |
WO (1) | WO1996024770A1 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19615322A1 (en) | 1996-04-18 | 1997-10-23 | Vdo Schindling | Peripheral pump |
JP3638818B2 (en) | 1999-05-20 | 2005-04-13 | 愛三工業株式会社 | Wesco type pump |
DE19927789A1 (en) | 1999-06-18 | 2000-12-21 | Bosch Gmbh Robert | Fluid pump for supplying fuel has an impeller fitted with a blade and driven to rotate in a pump chamber bounded in the direction of the impeller's rotational axis by partitioning components. |
DE10245619B4 (en) * | 2002-09-11 | 2004-08-26 | Fresenius Medical Care Deutschland Gmbh | Method for returning blood from a blood treatment device and device for carrying out the method |
JP4396750B2 (en) * | 2007-09-14 | 2010-01-13 | 株式会社デンソー | Fuel pump |
US9249806B2 (en) * | 2011-02-04 | 2016-02-02 | Ti Group Automotive Systems, L.L.C. | Impeller and fluid pump |
DE102012222336B4 (en) * | 2012-12-05 | 2018-02-08 | Continental Automotive Gmbh | flow machine |
US10167770B1 (en) * | 2017-09-12 | 2019-01-01 | Paragon Technology, Inc. | Automotive water pump spacer with volute extension |
DE102020205531A1 (en) * | 2020-04-30 | 2021-11-04 | Mahle International Gmbh | Side channel compressor for compressing gas |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1026174B (en) * | 1955-10-12 | 1958-03-13 | Geraetebau G M B H Deutsche | Self-priming centrifugal pump |
US3356033A (en) * | 1965-10-22 | 1967-12-05 | Ford Motor Co | Centrifugal fluid pump |
US3459130A (en) * | 1967-02-28 | 1969-08-05 | Lucas Industries Ltd | Liquid displacement pumps |
AT316313B (en) * | 1972-04-18 | 1974-07-10 | Diosgyoeri Gepgyar | Centrifugal pump |
JPS5724493A (en) * | 1980-07-21 | 1982-02-09 | Hitachi Ltd | Vortex flow blower |
US4508492A (en) * | 1981-12-11 | 1985-04-02 | Nippondenso Co., Ltd. | Motor driven fuel pump |
EP0093024B1 (en) * | 1982-04-28 | 1987-09-16 | Ase (Uk) Limited | Adjustable seat belt anchorage |
US4789221A (en) * | 1987-05-08 | 1988-12-06 | General Electric Company | Light valve projector apparatus having increased light efficiency |
JPH0642489A (en) * | 1992-04-04 | 1994-02-15 | Miura Kenkyusho:Kk | Noise reducing structure for westco pump |
US5273394A (en) * | 1992-09-24 | 1993-12-28 | General Motors Corporation | Turbine pump |
US5401143A (en) * | 1993-06-07 | 1995-03-28 | Ford Motor Company | Multi-stage automotive fuel pump having angeled fuel transfer passage |
DE4446537C2 (en) * | 1994-12-24 | 2002-11-07 | Bosch Gmbh Robert | liquid pump |
-
1995
- 1995-02-11 DE DE19504564A patent/DE19504564A1/en not_active Withdrawn
-
1996
- 1996-01-11 EP EP96900268A patent/EP0772743B1/en not_active Expired - Lifetime
- 1996-01-11 DE DE59604876T patent/DE59604876D1/en not_active Expired - Lifetime
- 1996-01-11 BR BR9605306A patent/BR9605306A/en not_active IP Right Cessation
- 1996-01-11 CN CN96190098A patent/CN1071421C/en not_active Expired - Fee Related
- 1996-01-11 JP JP52387496A patent/JP3734506B2/en not_active Expired - Fee Related
- 1996-01-11 WO PCT/DE1996/000028 patent/WO1996024770A1/en active IP Right Grant
- 1996-01-11 KR KR1019960705646A patent/KR100382682B1/en not_active IP Right Cessation
- 1996-01-11 US US08/722,235 patent/US5785490A/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9624770A1 * |
Also Published As
Publication number | Publication date |
---|---|
JPH09512323A (en) | 1997-12-09 |
CN1146795A (en) | 1997-04-02 |
JP3734506B2 (en) | 2006-01-11 |
KR970702437A (en) | 1997-05-13 |
DE19504564A1 (en) | 1996-08-14 |
EP0772743B1 (en) | 2000-04-05 |
KR100382682B1 (en) | 2003-10-04 |
DE59604876D1 (en) | 2000-05-11 |
CN1071421C (en) | 2001-09-19 |
WO1996024770A1 (en) | 1996-08-15 |
US5785490A (en) | 1998-07-28 |
BR9605306A (en) | 1997-10-07 |
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