EP0857255A1 - Strömungspumpe - Google Patents
StrömungspumpeInfo
- Publication number
- EP0857255A1 EP0857255A1 EP97922837A EP97922837A EP0857255A1 EP 0857255 A1 EP0857255 A1 EP 0857255A1 EP 97922837 A EP97922837 A EP 97922837A EP 97922837 A EP97922837 A EP 97922837A EP 0857255 A1 EP0857255 A1 EP 0857255A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- side channel
- pump
- damping groove
- impeller
- groove
- 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
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially 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
- 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
Definitions
- the invention is based on a flow pump, in particular for delivering fuel from a
- Fuel tank of a motor vehicle of the type defined in the preamble of claim 1.
- Peripheralpu pe In a known double-flow flow pump of this type (DE 40 20 521 AI), there called Peripheralpu pe, one of the side walls and the peripheral wall of an intermediate housing having the pump outlet and the other side wall of one of the walls connected to an outlet connection is connected to the pump chamber Housing cover formed with pump inlet.
- the pump or impeller arranged in the pump chamber is seated on a bearing journal formed on the housing cover and is non-rotatably connected to the output shaft of an electric motor, which is received in a bearing point formed in the intermediate housing.
- the flow pump draws fuel in through the intake port and presses this via the pump outlet into the interior of an electric motor and pump housing enclosing the intermediate housing. From there, the fuel under pressure is supplied to the internal combustion engine via a pressure line to be connected to a pressure connection of the pump housing.
- this known pump Due to the geometrical design of the outlet area of the side channel in the two side walls, this known pump has a good noise behavior.
- the flow pump according to the invention with the characterizing features of claim 1 has the advantage that the flow-induced noises caused by the flow pump are further reduced. Due to the damping groove according to the invention, with its arrangement according to the invention in the region of the greatest occurring amplitudes of the wall pressure vibrations
- Impeller blade frequency the wall alternating pressures are significantly reduced, which is accompanied by a significant reduction in noise.
- Fig. L is a side view of a flow pump for
- FIG. 2 shows a section along the line II-II in FIG. 3 of an intermediate housing in the flow pump in FIG. 1,
- FIG. 3 shows a view of the intermediate housing in the direction of arrow III in FIG. 2,
- FIG. 4 shows a section along line IV-IV in FIG. 5 of a housing cover of the flow pump in FIG. 1,
- FIG. 5 is a view of the housing cover in the direction of arrow V in Fig. 4,
- FIG. 7 is a side view of an impeller of the flow pump in FIG. 1st
- the side view of the flow pump in FIG. 1, also called the channel pump, serves to deliver fuel from a fuel tank of a motor vehicle, not shown, to an internal combustion engine of the motor vehicle, also not shown.
- the flow pump has one formed in a pump housing 10 Pump chamber 11, which is bounded by two radially extending, axially spaced side walls 12, 13 and a peripheral wall 14 connecting the side walls along their periphery (FIGS. 1 and 2).
- the side wall 13 and the peripheral wall 14 are on one
- Intermediate housing 15 is formed (FIGS. 2 and 3), while the side wall 12 is formed on a suction or housing cover 16 (FIGS. 4 and 5) which is fixedly connected to the intermediate housing 15 and / or the pump housing 10.
- the pump housing 10 overlaps the intermediate housing 15 and accommodates an electric motor that cannot be seen here.
- In the intermediate housing 15 there is also a pump outlet 17 axially penetrating the side wall 13, which creates a connection between the pump chamber 11 and the interior of the pump housing 10, and the pump housing 10 is connected to a pressure connection 18, at which the fuel delivered by the flow pump exits .
- the housing cover Iß has an intake port 19 for drawing in the fuel from the fuel tank, which is connected to a pump inlet 33 penetrating the side wall 12 (FIG. 5).
- each groove-like side channel 20, 21 has an approximately semicircular cross section and is open to the pump chamber 11.
- Each side channel 20, 21 runs concentrically to the pump axis 22 and extends almost the entire length, leaving a remaining interrupter web 35 or 23
- the interrupter web 35 is delimited by the beginning of the side channel 201 and the end of the side channel 202 (FIG. 5), and accordingly the interrupter web 23 is delimited by the beginning of the side channel 211 and the end of the side channel 212 (FIG. 3).
- the side channel start 201 of the side channel 20 in the side wall 12 on the housing cover 16 stands with the Pump inlet 33 (and this in turn with the intake port 19) and the side channel end 212 of the side channel 21 formed in the side wall 13 on the intermediate housing 15 is connected to the pump outlet 17, which in turn communicates with the pressure port 18 via the interior of the pump housing 10.
- a pump or impeller 24 is arranged in the pump chamber 11 coaxially to the pump axis 22.
- the impeller 24 sits on the one hand on a bearing journal 25 which projects coaxially into the pump chamber 11 on the side wall 12 and on the other hand non-rotatably on an output shaft 26 of the electric motor, which is mounted in a bearing bushing 27 coaxial with the pump axis 22.
- the bearing bush 27 is pressed into a coaxial bore 28 penetrating the side wall 13 in the intermediate housing 15.
- the impeller 24 (FIG. 7) has a plurality of impeller blades 29 which are spaced apart from one another in the circumferential direction and which are connected to one another at their end remote from the pump axis 22 by a circular outer ring 30.
- the impeller blades 29 each define a blade chamber 31 between them, which is open in the axial direction.
- the impeller blades 29 and the outer ring 30 are integral with the impeller 24, and the impeller blades 29 are formed by the fact that openings are arranged in the impeller 24 on a common distributor circuit
- the outer ring 30 is dimensioned such that a radial gap 32 remains between the circumferential outer surface 301 of the outer ring 30 and the peripheral wall 14 (FIG. 1).
- the flow pump sucks fuel through the intake port 19 and presses the fuel via the pump outlet 17 into the interior of the pump housing 10 and from there via the pressure port 18 to the internal combustion engine.
- a curved damping groove 36 which is open towards the pump chamber 11, is introduced into the side channel 20 in the side wall 12 on the suction or housing cover 16 (FIG. 5), which extends approximately over the side channel width.
- the side channel end of the side channel 20 marked 202 in FIG. 5 has an approximately S-shaped curved contour, the middle part of the contour on the center line 37 of the
- the damping groove 36 is now guided along the contour of the side channel end 202 in such a way that the distance dimension s measured in the circumferential direction between the center line 38 of the damping groove 36 and the contour of the side channel end 202 is constant at every point of the center line 38.
- the distance dimension s is dimensioned one to three times as large as the thickness ⁇ 5 of the impeller blades 29 seen in the circumferential direction of the impeller 24.
- the shape of the damping groove 36 is designed such that the outer and inner circular arcuate boundary line of the damping groove 36 and the center line 38 of the damping groove 36 have the same center of curvature.
- the damping groove 36 has a semicircular cross section, the maximum groove depth t being in the range from 0.1 to 1.5 mm, preferably between 0.2 mm and 0.5 mm.
- the maximum groove width b is one to three times the circumferential thickness ⁇ of the impeller blades 29 of the impeller 24.
- a damping groove 39 of the same design can be inserted into the damping groove 36 in the side wall 12 of the housing cover 16.
- the damping groove 36 in the side wall 12 of the housing cover 16 can be omitted, so that only the damping groove 36 is present in the side wall 13 of the intermediate housing 15, as described above.
- the flow pump can also be designed with one flow, so that a side channel is only present in one side wall, the side channel start of which is connected to the pump inlet and its side channel end is connected to the pump outlet.
- the side channel can be formed in the intermediate housing or in the housing cover.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19634900 | 1996-08-29 | ||
DE19634900A DE19634900A1 (de) | 1996-08-29 | 1996-08-29 | Strömungspumpe |
PCT/DE1997/000760 WO1998009081A1 (de) | 1996-08-29 | 1997-04-15 | Strömungspumpe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0857255A1 true EP0857255A1 (de) | 1998-08-12 |
EP0857255B1 EP0857255B1 (de) | 2002-11-20 |
Family
ID=7804000
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97922837A Expired - Lifetime EP0857255B1 (de) | 1996-08-29 | 1997-04-15 | Strömungspumpe |
Country Status (8)
Country | Link |
---|---|
US (1) | US6017183A (de) |
EP (1) | EP0857255B1 (de) |
JP (1) | JP2000500210A (de) |
KR (1) | KR19990067133A (de) |
CN (1) | CN1197504A (de) |
BR (1) | BR9706636A (de) |
DE (2) | DE19634900A1 (de) |
WO (1) | WO1998009081A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3638818B2 (ja) * | 1999-05-20 | 2005-04-13 | 愛三工業株式会社 | ウエスコ型ポンプ |
JP3800128B2 (ja) * | 2001-07-31 | 2006-07-26 | 株式会社デンソー | インペラ及びタービン式燃料ポンプ |
US6669437B2 (en) * | 2001-10-04 | 2003-12-30 | Visteon Global Technologies, Inc. | Regenerative fuel pump with leakage prevent grooves |
US6890144B2 (en) * | 2002-09-27 | 2005-05-10 | Visteon Global Technologies, Inc. | Low noise fuel pump design |
US7722311B2 (en) * | 2006-01-11 | 2010-05-25 | Borgwarner Inc. | Pressure and current reducing impeller |
DE102007018820A1 (de) * | 2007-04-20 | 2008-10-23 | Robert Bosch Gmbh | Förderaggregat |
JP5653531B2 (ja) * | 2011-10-13 | 2015-01-14 | 三菱電機株式会社 | 燃料ポンプ |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3095820A (en) * | 1960-02-29 | 1963-07-02 | Mcculloch Corp | Reentry rotary fluid pump |
DE4020521A1 (de) * | 1990-06-28 | 1992-01-02 | Bosch Gmbh Robert | Peripheralpumpe, insbesondere zum foerdern von kraftstoff aus einem vorratstank zur brennkraftmaschine eines kraftfahrzeuges |
DE9104728U1 (de) * | 1991-04-18 | 1992-08-20 | Robert Bosch Gmbh, 7000 Stuttgart | Aggregat zum Fördern von Kraftstoff aus einem Vorratstank zur Brennkraftmaschine eines Kraftfahrzeuges |
JP3107438B2 (ja) * | 1992-01-14 | 2000-11-06 | 三菱電機株式会社 | 電動燃料ポンプ |
DE4243544C2 (de) * | 1992-12-22 | 2003-04-17 | Bosch Gmbh Robert | Kraftstofförderpumpe |
JP3237360B2 (ja) * | 1993-02-04 | 2001-12-10 | 株式会社デンソー | 再生ポンプおよびそのケーシング |
DE4338677C2 (de) * | 1993-02-05 | 1999-07-29 | Mannesmann Vdo Ag | Pumpe zum Fördern von Fluid, insbesondere als Kraftstoff-Förderaggregat für Kraftfahrzeuge |
DE4318122C2 (de) * | 1993-06-01 | 2002-01-17 | Bosch Gmbh Robert | Aggregat zum Fördern von Kraftstoff aus einem Vorratstank zur Brennkraftmaschine eines Kraftfahrzeugs |
JP3463356B2 (ja) * | 1994-06-30 | 2003-11-05 | 株式会社デンソー | ウエスコポンプ |
DE4446537C2 (de) * | 1994-12-24 | 2002-11-07 | Bosch Gmbh Robert | Flüssigkeitspumpe |
-
1996
- 1996-08-29 DE DE19634900A patent/DE19634900A1/de not_active Withdrawn
-
1997
- 1997-04-15 DE DE59708770T patent/DE59708770D1/de not_active Expired - Fee Related
- 1997-04-15 KR KR1019980703079A patent/KR19990067133A/ko not_active Application Discontinuation
- 1997-04-15 CN CN97190860A patent/CN1197504A/zh active Pending
- 1997-04-15 BR BR9706636-2A patent/BR9706636A/pt not_active IP Right Cessation
- 1997-04-15 EP EP97922837A patent/EP0857255B1/de not_active Expired - Lifetime
- 1997-04-15 JP JP10511143A patent/JP2000500210A/ja active Pending
- 1997-04-15 WO PCT/DE1997/000760 patent/WO1998009081A1/de not_active Application Discontinuation
- 1997-04-15 US US08/983,595 patent/US6017183A/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9809081A1 * |
Also Published As
Publication number | Publication date |
---|---|
KR19990067133A (ko) | 1999-08-16 |
WO1998009081A1 (de) | 1998-03-05 |
EP0857255B1 (de) | 2002-11-20 |
DE59708770D1 (de) | 2003-01-02 |
BR9706636A (pt) | 1999-09-14 |
DE19634900A1 (de) | 1998-03-05 |
US6017183A (en) | 2000-01-25 |
JP2000500210A (ja) | 2000-01-11 |
CN1197504A (zh) | 1998-10-28 |
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