JP4138748B2 - Impeller for centrifugal pump - Google Patents
Impeller for centrifugal pump Download PDFInfo
- Publication number
- JP4138748B2 JP4138748B2 JP2004547387A JP2004547387A JP4138748B2 JP 4138748 B2 JP4138748 B2 JP 4138748B2 JP 2004547387 A JP2004547387 A JP 2004547387A JP 2004547387 A JP2004547387 A JP 2004547387A JP 4138748 B2 JP4138748 B2 JP 4138748B2
- Authority
- JP
- Japan
- Prior art keywords
- impeller
- centrifugal pump
- medium
- pumped
- cover plate
- 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.)
- Expired - Fee Related
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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
-
- 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
- F04D29/2205—Conventional flow pattern
- F04D29/2216—Shape, geometry
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)
Description
本発明は、遠心ポンプのための羽根車並びに当該羽根車の使用に関する。 The present invention relates to an impeller for a centrifugal pump and the use of the impeller.
遠心ポンプのための羽根車は公知である。この羽根車は羽根を備えている。この羽根によって、垂直に羽根へ導入される圧送したい媒体は、半径方向で変向され、側方で羽根車から遠心ポンプの圧力管片へ導出される。この場合、羽根の設計上の構成は、特別に極めて重要である。『流体機械』（"Stroemungsmaschinen"）（Karl Pfleiderer著、Hartwig Petermann発行、 第６版、１５６〜１６５頁）では、羽根が設計上準拠して構成されなければならない観点が説明される。この場合、例えば、羽根の吸込縁部の経過が次のように選択されるようにする、すなわち、この経過が吐出縁部から十分な間隔を保って側壁に、できるだけ急勾配の角度を備えて続くように選択されるようにすることが、強調される。 Impellers for centrifugal pumps are known. This impeller has blades. By means of these blades, the medium to be pumped vertically introduced into the blades is diverted in the radial direction and is guided laterally from the impeller to the pressure pipe piece of the centrifugal pump. In this case, the design configuration of the blades is of particular importance. "Fluid Machine" ("Stroemungsmaschinen") (Karl Pfleiderer, published by Hartwig Petermann, 6th edition, pages 156-165) explains the point at which the blades must be constructed according to design. In this case, for example, the course of the suction edge of the blade is selected as follows, i.e. this course has a steep angle as much as possible on the side wall at a sufficient distance from the discharge edge. Emphasizing that it is selected to continue.
本発明は、より小さい構造上の構成でも比較的に高い効率が達成され得るようになっている、遠心ポンプのための羽根車を提供するという課題に基づいている。 The present invention is based on the problem of providing an impeller for a centrifugal pump, such that a relatively high efficiency can be achieved even with smaller structural configurations.
本発明の基礎を成している前記課題は、前方のカバープレートと後方のカバープレートとの間に、少なくとも３つの羽根が配置されており、少なくとも１つの羽根の吸込縁部の弧が、圧送したい媒体の入口側の平面図で見て、唯一の変曲点Ｗを備えて正弦状に経過している、遠心ポンプのための羽根車によって解決される。この場合、吸込縁部とは、各羽根の、流動媒体に向けられた縁部のことである。圧送したい媒体として、液体、ガスまたは例えば懸濁液も使用することができる。変曲点とは、前記弧の、異なる湾曲の２つの部分を分割する点のことである。この場合、圧送したい媒体の入口側の平面図で見て、観察者に呈示される、弧状の経過が考えられている。驚くべきことに、当該羽根車は、より小さい設計上の構成でも比較的に高い効率を有していることが判った。この結果は、例えば、羽根車の直径が５〜６ｃｍである場合に得られた。遠心ポンプのための当該羽根車が設計上大きく設定されていればいるほど、効率はますます高くなる。この場合、効率とは例えば、導出された液圧的な出力を、供給された動力で割った商を意味しており、しかも、導出された液圧的な出力とは、流量と圧力差との積のことである。このことによって、大抵の場合、流量の増加と圧力差の増大とを達成することができる。 The problem underlying the present invention is that at least three vanes are arranged between the front cover plate and the rear cover plate, and the arc of the suction edge of the at least one vane is pumped. This is solved by an impeller for a centrifugal pump, which has a sinusoidal course with a unique inflection point W as seen in a plan view on the inlet side of the medium to be obtained. In this case, the suction edge is the edge of each blade directed towards the fluid medium. As a medium to be pumped, a liquid, a gas or, for example, a suspension can be used. The inflection point is a point that divides two portions of the arc having different curvatures. In this case, an arc-like process presented to the observer is considered as seen in the plan view on the inlet side of the medium to be pumped. Surprisingly, it has been found that the impeller has a relatively high efficiency even in smaller design configurations. This result was obtained, for example, when the impeller has a diameter of 5 to 6 cm. The larger the design of the impeller for the centrifugal pump, the higher the efficiency. In this case, the efficiency means, for example, a quotient obtained by dividing the derived hydraulic output by the supplied power, and the derived hydraulic output includes the flow rate and the pressure difference. Is the product of This can in most cases achieve an increase in flow rate and an increase in pressure difference.
本発明の有利な１実施態様は、変曲点Ｗが、吸込縁部の弧の外側端部Ａよりも吸込縁部の弧の内側端部Ｂの近くに位置していることにある。この構成によって効率をさらに高めることができる。 One advantageous embodiment of the invention is that the inflection point W is located closer to the inner end B of the arc of the suction edge than to the outer end A of the arc of the suction edge. This configuration can further increase the efficiency.
本発明の別の有利な実施態様によれば、７個〜１５個の羽根が配置されている。このことによって、遠心ポンプのための当該羽根車は、様々な使用目的に特別有利に適している。 According to another advantageous embodiment of the invention, 7 to 15 blades are arranged. This makes the impeller for centrifugal pumps particularly advantageous for various purposes of use.
本発明のさらに別の有利な実施態様によれば、全ての羽根の吸込縁部の弧が、同形式に形成されていることが考えられている。この場合、同形式の形成とは、全ての羽根の吸込縁部の弧が、圧送したい媒体の入口側の平面図で見て、唯一の変曲点Ｗを備えて正弦状に経過しているという意味である。この構成によってやはり効率が高められると同時に、羽根車の製作が簡単になる。 According to a further advantageous embodiment of the invention, it is envisaged that the arcs of the suction edges of all the blades are formed in the same manner. In this case, the formation of the same form means that the arcs of the suction edges of all the blades have a sinusoidal shape with a single inflection point W as seen in the plan view on the inlet side of the medium to be pumped. It means that. This construction also increases efficiency and simplifies the manufacture of the impeller.
本発明のさらに別の有利な実施態様によれば、吸込縁部の弧の全ての内側端部Ｂが、圧送したい媒体の入口側の平面図に関して、１つの円上に位置していることが考えられている。これにより、遠心ポンプのための当該羽根車の内部における流れ挙動が、最適化される。 According to a further advantageous embodiment of the invention, all the inner ends B of the arc of the suction edge are located on a circle with respect to the plan view on the inlet side of the medium to be pumped. It is considered. This optimizes the flow behavior inside the impeller for the centrifugal pump.
本発明のさらに別の有利な実施態様によれば、後方のカバープレートの、圧送したい媒体の流れ方向に向けられた面は、凸状に形成されている。この場合、ビード状の突出部の形状の、通常汎用の流入スピンナ（Einlaufspinner；intake spinner）を配置することは、省かれる。前記凸状の形成によって、後方のカバープレートの領域における流れ特性が改善される。 According to a further advantageous embodiment of the invention, the surface of the rear cover plate directed in the flow direction of the medium to be pumped is formed in a convex shape. In this case, it is not necessary to arrange a generally-used inflow spinner (Einlaufspinner) in the shape of a bead-like protrusion. The convex formation improves the flow characteristics in the area of the rear cover plate.
本発明のさらに別の実施態様によれば、後方のカバープレートの、圧送したい媒体の流れ方向に向けられた面は、平坦な面を中央に有している。この形式によって、平坦な面に堰止め室（Stauraum）が形成され、この堰止め室内で渦流が生ぜしめられる。この渦流によって、流動媒体は側方で羽根車の出口に、有利な方式で到達することができる。 According to still another embodiment of the present invention, the surface of the rear cover plate that faces the flow direction of the medium to be pumped has a flat surface in the center. In this manner, a damming chamber (Stauraum) is formed on a flat surface, and a vortex is generated in the damming chamber. This vortex allows the fluid medium to reach the impeller outlet laterally in an advantageous manner.
最後に、本発明の対象は、前記羽根車を、自動車における冷却水を圧送するための遠心ポンプ内で使用することである。これにより、自動車における冷却を最適化することができる。このことは、遠心ポンプのための前記羽根車によって効率が高められた直接の結果である。 Finally, the object of the present invention is to use the impeller in a centrifugal pump for pumping cooling water in an automobile. Thereby, the cooling in a motor vehicle can be optimized. This is a direct result of increased efficiency by the impeller for centrifugal pumps.
以下に、本発明を図面（図１〜図３）につき詳しくかつ例示的に説明する。 In the following, the present invention will be described in detail and exemplarily with reference to the drawings (FIGS. 1 to 3).
図１には、遠心ポンプのための羽根車を平面図で示してある。羽根車は複数の羽根１を有している。この場合、羽根１の吸込縁部の弧２は、唯一の変曲点Ｗを備えて正弦状に経過している。この正弦状の経過は、横座標Ｘおよび縦座標Ｙを備えた座標システムによって明確に示される。この場合、吸込縁部の所属の弧２は、ボールド印刷で強調されている。この場合、変曲点は、吸込縁部の弧２の外側端部Ａよりも吸込縁部の弧２の内側端部Ｂの近くに位置している。全部で７つの羽根１が配置されている。この場合、全ての羽根１の吸込縁部の弧２は、同形式に形成されている。吸込縁部の弧２の全ての内側端部Ｂは、圧送したい媒体の入口側の平面図に関して、１つの円７上に位置する。 FIG. 1 shows a top view of an impeller for a centrifugal pump. The impeller has a plurality of blades 1. In this case, the arc 2 at the suction edge of the blade 1 has a unique inflection point W and has passed in a sine form. This sinusoidal course is clearly shown by a coordinate system with abscissa X and ordinate Y. In this case, the arc 2 to which the suction edge belongs is highlighted by bold printing. In this case, the inflection point is located closer to the inner end B of the arc 2 of the suction edge than to the outer end A of the arc 2 of the suction edge. A total of seven blades 1 are arranged. In this case, the arcs 2 of the suction edges of all the blades 1 are formed in the same form. All the inner ends B of the suction edge arc 2 are located on one circle 7 with respect to the top view of the inlet side of the medium to be pumped.
図２には、遠心ポンプのための羽根車を横断面図で示してある。この羽根車は、圧送したい媒体のための出口側を中央に有している。圧送したい媒体は、遠心ポンプのための羽根車を通流し、羽根車４の出口４を介して遠心ポンプの圧力管片（図示せず）に到達する。後方のカバープレート６の、圧送したい媒体の流れ方向に向けられた面６′は、凸状に形成されていて、平坦な面６″を中央に有している。この平坦な面６″には、運転中、圧送したい媒体のための堰止め室が形成される。このことによって、圧送したい媒体は、より迅速に羽根車の出口側４に到達することができる。個々の羽根１は、前方のカバープレート５と後方のカバープレート６との間に配置されている。
FIG. 2 shows an impeller for a centrifugal pump in a cross-sectional view. This impeller has an outlet side in the center for the medium to be pumped. The medium to be pumped flows through the impeller for the centrifugal pump and reaches the pressure pipe piece (not shown) of the centrifugal pump through the
図３には、遠心ポンプのための羽根車を三次元で示してある。この羽根車は、通常、プラスチックから製作される。この場合、特別に有利な形式では、熱硬化性プラスチックが使用される。羽根車は、特別に有利には、自動車における冷却水を圧送するための遠心ポンプ内で使用される。この場合、羽根車の直径は４〜７ｃｍである。このような羽根車が比較的に小さく構成されているにもかかわらず、遠心ポンプの、比較的に高い効率が達成され得る。 In FIG. 3, the impeller for the centrifugal pump is shown in three dimensions. This impeller is usually made from plastic. In this case, a thermosetting plastic is used in a particularly advantageous manner. The impeller is particularly advantageously used in a centrifugal pump for pumping cooling water in a motor vehicle. In this case, the impeller has a diameter of 4 to 7 cm. Despite the relatively small construction of such an impeller, a relatively high efficiency of the centrifugal pump can be achieved.
Claims (8)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2002150776 DE10250776A1 (en) | 2002-10-30 | 2002-10-30 | Impeller for a centrifugal pump |
| PCT/DE2003/003182 WO2004040145A1 (en) | 2002-10-30 | 2003-09-24 | Rotor for a centrifugal pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2006504041A JP2006504041A (en) | 2006-02-02 |
| JP4138748B2 true JP4138748B2 (en) | 2008-08-27 |
Family
ID=32103223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2004547387A Expired - Fee Related JP4138748B2 (en) | 2002-10-30 | 2003-09-24 | Impeller for centrifugal pump |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1556616B1 (en) |
| JP (1) | JP4138748B2 (en) |
| DE (2) | DE10250776A1 (en) |
| WO (1) | WO2004040145A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013018632A1 (en) * | 2013-11-06 | 2015-05-07 | Daimler Ag | Adjusting device for an internal combustion engine |
| AU2015403320A1 (en) * | 2015-07-30 | 2018-02-22 | Gardner Denver Nash Llc | Blade contour of a rotor for a liquid ring pump |
| CN110762050A (en) * | 2019-12-18 | 2020-02-07 | 浙江兴益风机电器有限公司 | Centrifugal fan impeller |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1050523A (en) * | 1911-12-20 | 1913-01-14 | Ralph H Dixon | Centrifugal pump. |
| GB336977A (en) * | 1928-10-05 | 1930-10-16 | Alphonse De Riesenkampf | System of rotary blades more particularly applicable to immersed propellers |
| GB859815A (en) * | 1956-03-31 | 1961-01-25 | Walter Bohmann | Improvements in and relating to runner blades for pumps, blowers or compressors |
| US3444817A (en) * | 1967-08-23 | 1969-05-20 | William J Caldwell | Fluid pump |
| JPS59168297A (en) * | 1983-03-16 | 1984-09-21 | Hitachi Ltd | welded impeller |
| JPS59192898A (en) * | 1983-04-15 | 1984-11-01 | Hitachi Zosen Corp | Centrifugal impeller |
| JP2931432B2 (en) * | 1991-04-30 | 1999-08-09 | 大平洋機工 株式会社 | Impeller of water pump or general-purpose pump |
| IT225647Y1 (en) * | 1991-05-22 | 1997-01-13 | Zanussi Elettrodomestici | IMPELLER FOR CENTRIFUGAL PUMP |
| US5730582A (en) * | 1997-01-15 | 1998-03-24 | Essex Turbine Ltd. | Impeller for radial flow devices |
-
2002
- 2002-10-30 DE DE2002150776 patent/DE10250776A1/en not_active Withdrawn
-
2003
- 2003-09-24 WO PCT/DE2003/003182 patent/WO2004040145A1/en not_active Ceased
- 2003-09-24 EP EP03773454A patent/EP1556616B1/en not_active Expired - Lifetime
- 2003-09-24 JP JP2004547387A patent/JP4138748B2/en not_active Expired - Fee Related
- 2003-09-24 DE DE50305604T patent/DE50305604D1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP1556616A1 (en) | 2005-07-27 |
| DE10250776A1 (en) | 2004-05-13 |
| EP1556616B1 (en) | 2006-11-02 |
| JP2006504041A (en) | 2006-02-02 |
| DE50305604D1 (en) | 2006-12-14 |
| WO2004040145A1 (en) | 2004-05-13 |
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