CN1714246A - Centrifugal pump - Google Patents
Centrifugal pump Download PDFInfo
- Publication number
- CN1714246A CN1714246A CNA2003801036439A CN200380103643A CN1714246A CN 1714246 A CN1714246 A CN 1714246A CN A2003801036439 A CNA2003801036439 A CN A2003801036439A CN 200380103643 A CN200380103643 A CN 200380103643A CN 1714246 A CN1714246 A CN 1714246A
- Authority
- CN
- China
- Prior art keywords
- blade
- centrifugal pump
- curved section
- impeller
- rotation
- 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.)
- Pending
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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
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/24—Vanes
- F04D29/242—Geometry, shape
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a centrifugal pump with an impeller (10) which is rotatable in a direction of rotation (14) in a pump housing. This impeller comprises an essentially circular-disk-shaped carrier (11) with a number of blades (13) arranged at an angle out from the disk plane. At least one of the blades (13) of the impeller extends with a first curved portion (15) which is concave in said direction of rotation (14) and a second curved portion (16) which is convex in said direction of rotation. The first curved portion extends from the inner radial edge (17) to the second curved portion. The second curved portion extends from the first curved portion in the direction of the outer radial edge (18).
Description
Technical field
The present invention relates to a kind of centrifugal pump that has impeller, this impeller is rotatable in pump casing, along sense of rotation, and including a discoidal substantially bearing that has many blades, described blade extends between internal diameter edge and external diameter edge from the outside layout at an angle of disc face and with a kind of crooked basically shape.
Background technique
Centrifugal pump has many applications, such as, be used for extracting in a fixed manner various media or to they pressurizations, perhaps be used for the cooling liquid between the thermal source and cooling equipment in engine-driven land vehicle and boats and ships (aircraft) extraction cooling system.At heavy vehicle, in the application such as truck, MANUFACTURER is generally client's sampling scope, this sample scope includes many different engine size, every kind of engine type has the various power grades of suitable needs by device variations, and the selection of modification has direct influence to the flow operating mode of cooling system.The example of the equipment of this suitable needs has, motor and gear box oil cooler, intercooler, EGR gas cooler and retarder cooler.
It is optimized that centrifugal pump is usually designed to given speed and given flow.If pump is operated outside standard, cavitation may take place, another kind may be that unnecessary power loss takes place.Therefore, in order to contain needs, need the classification of different water pumps.In addition, may make the ratio coupling between live axle and the pump, such as variation by the gear ratio in the speed-changing gear box.It is desirable to, concerning the MANUFACTURER of heavy vehicle, may use the same standard element,, be used for than current more modification such as water pump.In addition, if these adapt to revise the replacement that does not relate to coolant pump, revising the vehicle that has used so will be easier, such as needing or the applying working condition coupling with new environment.
Summary of the invention
Therefore an object of the present invention is to produce a kind of centrifugal pump, it can be in the velocity range of broad, work enduringly in the range of flow of broad, and keeps high efficiency under such operating mode.
For this reason, be characterised in that according to centrifugal pump of the present invention, at least one blade of impeller extends and has at recessed first curved section of described sense of rotation with at second curved section of described sense of rotation projection, first curved section extends to second curved section from the internal diameter edge, second curved section in the external diameter edge direction from the first curved section extension.This design of impeller blade causes in the range of flow of the velocity range of broad and broad higher efficient being arranged simultaneously.
Favourable exemplary embodiment of the present invention occurs in the dependent claims.
Description of drawings
Exemplary embodiment below with reference to the accompanying drawings describes the present invention in detail, wherein
Fig. 1 is at the plan view according to the impeller that uses in the centrifugal pump of the present invention;
Fig. 2 be along the cross section of Fig. 1 center line II-II and
Fig. 3 is used to adopt according to efficient under the friction speed of the pump-unit of centrifugal pump of the present invention and the relation between the flow with caption.
Embodiment
As shown in Figure 2, the blade shown in the exemplary embodiment with respect on the disc face of bearing at blade face to the side of the sense of rotation about 80 ° angle 20 that tilts.This angle can than shown in smaller or more greatly.The another kind of selection is that blade can be design crooked on sense of rotation.Therefore many variations are possible, such as, the average tilt angle of blade can change between about 45 ° and about 87 °.
In addition, there is the plane of inclination 21 of its most advanced and sophisticated directed sense of rotation at the edge of the relative carrier disk of blade.Shown in exemplary embodiment in, this plane of inclination becomes about 10 ° of angles with respect to the disc face of bearing, but this angle 22 can change between about 3 ° and about 30 °.Have been found that this inclined-plane reduces the risk of cavitation when efficient increases.
In above-mentioned exemplary embodiment, impeller is arranged to rotate in pump casing, and blade and pump casing wall influence each other, the disc face of the parallel and close bearing of pump casing wall.In another alternate embodiments (not shown), impeller can comprise a disk, and this disk is parallel to the disc face of bearing, is connected to blade and is provided with the center inlet opening.Adopt at impeller under the situation of this mode " sealing ", blade needn't tilt as above-mentioned.
Curve shows shown in Fig. 3 under four kinds of friction speeds, from about 1500rpm to about 3500rpm, the relation between efficient and the flow.As can be seen, when flow Q changed between 6l/s and 14l/s, efficient can remain on about 65% from curve.Therefore, can in the application of the flow/pressure decline of many different variations, use according to one and same pump of the present invention, and with in the higher efficient running, the gear of pump is than deacclimatizing different application especially in pump can the velocity range at broad.
The present invention is considered to be not limited to above-mentioned exemplary embodiment, but can expect a large amount of further variation and modification in the scope of patent claims below.Such as, all blades 13 of impeller needn't have duplicate shape, but can expect, such as, every other blade can be made than illustrated weak point, and effect of the present invention can not lost fully.
Claims (9)
1. centrifugal pump that has impeller (10), this impeller can rotate along sense of rotation (14) in pump casing, and comprise a discoidal substantially bearing (11) that has many blades (13), described blade is outwards arranged at an angle from disc face, and between internal diameter edge (17) and external diameter edge (18), extend with crooked basically shape, it is characterized in that, at least one blade (13) of described impeller extends and has at recessed first curved section (15) of described sense of rotation (14) with at second curved section (16) of described sense of rotation projection, first curved section extends to second curved section from internal diameter edge (17), second curved section in external diameter edge (18) direction from the first curved section extension.
2. centrifugal pump as claimed in claim 1 is characterized in that, first curved section (15) is shorter than second curved section (16).
3. centrifugal pump as claimed in claim 2 is characterized in that, the length of first curved section (15) blade (13) total length 1/10 and 2/5 between.
4. as any one described centrifugal pump in the claim 1 to 3, it is characterized in that blade (13) is along at least a portion of its length, at blade face the side of sense of rotation (14) is tilted less than 90 ° angle (20) with respect to the disc face of bearing.
5. centrifugal pump as claimed in claim 4 is characterized in that, described tilt angle (20) are between about 45 ° to about 87 °.
6. as any one described centrifugal pump in the claim 1 to 5, it is characterized in that blade (13) edge of bearing (11) relatively has its most advanced and sophisticated plane of inclination (21) of pointing to sense of rotation (14).
7. centrifugal pump as claimed in claim 6 is characterized in that, described plane of inclination (21) become an angle (22) with respect to the disc face of bearing, and this angle is between about 3 ° and about 30 °.
8. as any one described centrifugal pump in the claim 1 to 7, it is characterized in that, impeller (10) is arranged to rotate in pump casing with blade (13), and described blade (13) interacts with the pump casing wall, the disc face of the parallel and close bearing (11) of this pump casing wall.
9. centrifugal pump as claimed in claim 1 is characterized in that, impeller (10) comprises a disk, and this disk is parallel to the disc face of bearing (11), is connected to blade (13) and is provided with the center inlet opening.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE02034338 | 2002-11-19 | ||
SE0203433A SE524642C2 (en) | 2002-11-19 | 2002-11-19 | centrifugal |
Publications (1)
Publication Number | Publication Date |
---|---|
CN1714246A true CN1714246A (en) | 2005-12-28 |
Family
ID=20289625
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNA2003801036439A Pending CN1714246A (en) | 2002-11-19 | 2003-11-07 | Centrifugal pump |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1567773A1 (en) |
JP (1) | JP2006506578A (en) |
CN (1) | CN1714246A (en) |
AU (1) | AU2003276796A1 (en) |
BR (1) | BR0316422A (en) |
SE (1) | SE524642C2 (en) |
WO (1) | WO2004046558A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102954032A (en) * | 2012-11-22 | 2013-03-06 | 无锡惠山泵业有限公司 | Centrifugal water pump |
CN103216452A (en) * | 2013-04-25 | 2013-07-24 | 常州雷利电机科技有限公司 | Draining pump |
CN103867491A (en) * | 2013-02-18 | 2014-06-18 | 摩尔动力(北京)技术股份有限公司 | Rotating body liquid remote supply device for engine |
CN104358706A (en) * | 2014-10-29 | 2015-02-18 | 安徽三联泵业股份有限公司 | Slurry pump for cyclone |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5393217B2 (en) | 2009-03-25 | 2014-01-22 | 株式会社小糸製作所 | Headlamp cleaner motor pump |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1050523A (en) * | 1911-12-20 | 1913-01-14 | Ralph H Dixon | Centrifugal pump. |
US2766697A (en) * | 1954-12-02 | 1956-10-16 | Elroy F Judd | Pump having radial intake and centrifugal discharge |
GB1495708A (en) * | 1974-01-11 | 1977-12-21 | Kamelmacher E | Blade for a centrifugal pump impeller |
CH672532A5 (en) * | 1987-01-29 | 1989-11-30 | Sulzer Ag | Impeller for centrifugal pump - has blade angle profile chosen to minimise danger of cavitation |
-
2002
- 2002-11-19 SE SE0203433A patent/SE524642C2/en not_active IP Right Cessation
-
2003
- 2003-11-07 CN CNA2003801036439A patent/CN1714246A/en active Pending
- 2003-11-07 JP JP2004553338A patent/JP2006506578A/en active Pending
- 2003-11-07 AU AU2003276796A patent/AU2003276796A1/en not_active Abandoned
- 2003-11-07 WO PCT/SE2003/001724 patent/WO2004046558A1/en not_active Application Discontinuation
- 2003-11-07 EP EP03811565A patent/EP1567773A1/en not_active Withdrawn
- 2003-11-07 BR BR0316422-5A patent/BR0316422A/en not_active Application Discontinuation
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102954032A (en) * | 2012-11-22 | 2013-03-06 | 无锡惠山泵业有限公司 | Centrifugal water pump |
CN103867491A (en) * | 2013-02-18 | 2014-06-18 | 摩尔动力(北京)技术股份有限公司 | Rotating body liquid remote supply device for engine |
CN103216452A (en) * | 2013-04-25 | 2013-07-24 | 常州雷利电机科技有限公司 | Draining pump |
CN104358706A (en) * | 2014-10-29 | 2015-02-18 | 安徽三联泵业股份有限公司 | Slurry pump for cyclone |
Also Published As
Publication number | Publication date |
---|---|
BR0316422A (en) | 2005-10-11 |
WO2004046558A1 (en) | 2004-06-03 |
SE524642C2 (en) | 2004-09-07 |
SE0203433D0 (en) | 2002-11-19 |
SE0203433L (en) | 2004-05-20 |
EP1567773A1 (en) | 2005-08-31 |
JP2006506578A (en) | 2006-02-23 |
AU2003276796A1 (en) | 2004-06-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
WD01 | Invention patent application deemed withdrawn after publication |