WO2022128396A1 - Verdichterrad für den verdichter einer brennkraftmaschine - Google Patents
Verdichterrad für den verdichter einer brennkraftmaschine Download PDFInfo
- Publication number
- WO2022128396A1 WO2022128396A1 PCT/EP2021/083062 EP2021083062W WO2022128396A1 WO 2022128396 A1 WO2022128396 A1 WO 2022128396A1 EP 2021083062 W EP2021083062 W EP 2021083062W WO 2022128396 A1 WO2022128396 A1 WO 2022128396A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- compressor wheel
- hub
- blade
- blades
- compressor
- 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.)
- Ceased
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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/284—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for compressors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/024—Units comprising pumps and their driving means the driving means being assisted by a power recovery turbine
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/30—Vanes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/40—Application in turbochargers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/20—Rotors
- F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05D2240/301—Cross-sectional characteristics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/20—Rotors
- F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05D2240/303—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the leading edge of a rotor blade
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2250/00—Geometry
- F05D2250/70—Shape
Definitions
- the present invention relates to a compressor wheel for the compressor of an internal combustion engine.
- Exhaust gas turbochargers are already known. They have, inter alia, a turbine and a compressor, the turbine being equipped with a turbine wheel and the compressor being equipped with a compressor wheel.
- exhaust gas recirculation in the exhaust system of an internal combustion engine equipped with an exhaust gas turbocharger in order to reduce undesirable exhaust gas emissions, in particular nitrogen oxide emissions, in Otto and diesel engines.
- the exhaust gas is extracted from the exhaust system.
- the exhaust gas is removed after exhaust gas aftertreatment downstream of a particle filter and fed back upstream of the compressor of the exhaust gas turbocharger.
- the exhaust gas is mixed with fresh air in the compressor.
- the exhaust gas When a motor vehicle is in operation, various components of the exhaust gas can cause damage to the compressor wheel.
- One damage mechanism is corrosion of the compressor wheel material due to corrosive elements in the exhaust gas.
- the exhaust gas In addition to water vapor and carbon dioxide, the exhaust gas also contains pollutants produced during the combustion process as well as particles from exhaust gas aftertreatment.
- both the main blades and - if present - the splitter blades of a compressor wheel are designed to be as thin and pointed as possible.
- the leading edges of the compressor wheel blades are also designed to be pointed or slightly elliptical over their entire radial extent.
- the shape of a main blade leading edge corresponds to the shape of a splitter blade leading edge that may be present.
- the object of the invention is to design the compressor of an exhaust gas turbocharger in such a way that damage to the compressor wheel caused by components contained in the exhaust gas during operation of the motor vehicle is reduced.
- FIG. 5 is another sketch to illustrate the shape of a blade leading edge in the shroud area and in the hub area of a compressor wheel blade
- FIG. 7 is a sketch to illustrate further embodiments of the invention.
- FIG. 1 shows sketches of a conventional compressor wheel.
- the sketch on the left in FIG. 1 shows a perspective view of the conventional compressor wheel and the sketch on the right shows a sectional view of this compressor wheel.
- the illustrated compressor wheel has a hub 2 extending around a central axis 1 of the compressor wheel. Compressor wheel blades 3a and 3b are provided on this hub.
- the hub and the compressor wheel blades provided on it are monolithically formed in one piece and are either milled or cast.
- the radially inner area of the hub 2 is hollow, so that the hub can be attached to the shaft of an exhaust gas turbocharger.
- the blades mentioned are main blades 3a and splitter blades 3b, with the splitter blades 3b each being arranged between two main blades 3a.
- the splitter blades 3b are formed shorter in the axial direction of the central axis 1 and lower in the radial direction than the main blades 3a.
- the main blades 3a have main blade leading edges 3c, which run in the radial direction or predominantly in the radial direction, and an end region 4 on the hub side and an end region 5 remote from the hub to have.
- the splitter blades 3b have splitter blade entry edges 3d, which also run in the radial direction or predominantly in the radial direction and have a hub-side end area and an end area remote from the hub, which in the assembled state of the compressor wheel corresponds to the flow-guiding contour of the surrounding compressor wheel housing or the compressor frame, the so-called “shroud “ opposite.
- the end area of the blade leading edges remote from the hub is therefore also referred to in this description as the “shroud-side end area” or “schroud area” or “shroud-side end point”.
- the blade leading edges can run away from the hub 2 in a straight line in a purely radial direction to the outside.
- the blade leading edges away from the hub 2 run obliquely away from the straight radial direction or in an arc shape outwards, which is summarized here under the phrase "predominantly in the radial direction", with this phrase also including a course in a purely radial direction includes.
- both the main blades and the splitter blades are pointed. Alternatively, they can also be elliptical.
- the sectional view shown on the right-hand side in FIG. 1 shows in particular the hub 2 and a main blade 3a provided on this hub.
- the leading edge 3c of the main blade 3a has an end point 6 in its hub-side end region 4, which is the connection point connecting the hub with the leading edge of the main blade.
- the leading edge 3c of the main blade 3a has an end point 7 in its end region 5 radially remote from the hub 2, which is the shroud-side end point of the leading edge of the main blade.
- FIG. 2 shows sketches of two different conventional compressor wheels.
- FIG. 2 shows a perspective representation of the conventional compressor wheel already shown in FIG. 1, which has main blades 3a and splitter blades 3b.
- the sketch shown on the right-hand side in FIG. 2 shows a conventional compressor wheel which has only main blades 3a but no splitter blades 3b.
- FIG. 3 shows sketches to illustrate the shroud-side end region 5 of a conventional blade leading edge and a blade leading edge according to the invention, which is a main blade.
- the shroud-side end region 5 of a conventional blade leading edge is shown on the left-hand side in FIG. It can be seen that the leading edge of the blade is elliptical in its shroud-side end region.
- shroud-side end area 5 of a blade leading edge according to the invention is shown on the right-hand side of FIG. It can be seen that this blade leading edge is blunt in its shroud-side end area.
- the blade leading edge is elliptical, just like in the prior art.
- the leading edges of the splitter blades are pointed or elliptical over their entire radial extent, as in the prior art.
- the above-described blunt configuration of the shroud-side end region of the blade leading edge of a main blade occurs both when the compressor wheel has main blades and splitter blades and when the compressor wheel only has main blades but no splitter blades. Furthermore, the above-described blunt configuration of the shroud-side end region of the blade leading edge of a main blade can be used both with milled and with cast compressor wheels.
- FIG. 4 shows sketches to illustrate the shape of a blade leading edge according to the invention in the shroud area and in the hub area of a compressor wheel blade.
- FIG. 4 A sketch is shown on the left-hand side of FIG. 4, in which the design of the blade leading edge in the shroud area is illustrated in a section perpendicular to the blade leading edge.
- the leading edge of the blade is blunt, specifically designed here in the shape of a semicircle, as is indicated by the circle shown in dashed lines.
- a/b ⁇ 1 applies, where “a” is the distance from the blade end to the center point M of the rounding and where “b” is the distance between the blade side surface and the center point M running perpendicular to “a”.
- M is the center point of the fillet of the blade leading edge, which, viewed in section, is determined by the intersection of the chord line of the blade with a line running through the transition points between the blade side surfaces and the start of the fillet.
- the ratio a/b can advantageously be a/b ⁇ 0.8, in particular also a/b ⁇ 0.5, which characterizes even more truncated versions.
- FIG. 4 A sketch is shown on the right-hand side of FIG. 4, in which the design of the blade leading edge in the hub area is illustrated.
- the leading edge of the blade in the hub region is pointed, specifically elliptical here, as is indicated by the ellipse shown.
- the letter M designates the center point of the ellipse mentioned.
- FIG. 5 shows a further sketch to illustrate the shape of a blade leading edge in the shroud area and in the hub area of a compressor wheel blade.
- This sketch also shows that the leading edge of the illustrated compressor wheel blade is elliptical, i.e. pointed, in the end region remote from the hub in the prior art, while in the invention it is blunt, preferably semicircular.
- the blade leading edge of the compressor wheel blade shown is embodied elliptically in its hub area both in the prior art and in the invention.
- FIG. 6 shows a further sketch to illustrate the invention.
- the blade leading edge in the outer diameter area B of the blade leading edge, i.e. in the end area of the blade leading edge remote from the hub, the blade leading edge is blunt, while in the inner diameter area A, i.e. in the hub-side end area of the blade leading edge, it is elliptical.
- the outer diameter region B corresponds approximately to half the radial extension of the blade leading edge.
- the relevant ratios of the semi-axes a/b to the corresponding position r at the blade leading edge are shown in the form of area windows. There can be any geometric shapes that lie within the range windows.
- FIG. Various exemplary embodiments are shown in FIG. Among other things, a linear course of the ratio of the semi-axes a/b over the course of the blade leading edge from the hub to the shroud-side end region, i.e. from the end point 6 of the hub-side end region 4 to the end point 7 of the end region 5 of the blade leading edge remote from the hub (see Figure 6), as illustrated on the left-hand side of FIG. Furthermore, a discontinuous change from a pointed to a blunt shape of the blade leading edge of the compressor wheel is possible, as illustrated in the middle and on the right-hand side of FIG. The transition from the elliptical shape to the obtuse shape is geometrically smooth.
- the blunt region of the blade leading edge by a combination of a semicircular and an elliptical shape, as is indicated in FIG. 7, top right, with the letters k and e.
- the side surfaces of the compressor blades run in the region before the transition to the blunt rounding of the blade leading edge over a partial region on an elliptical path towards the blade leading edge.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US18/257,775 US12129866B2 (en) | 2020-12-18 | 2021-11-25 | Compressor wheel for the compressor of an internal combustion engine |
| KR1020237023275A KR102811962B1 (ko) | 2020-12-18 | 2021-11-25 | 내연 기관의 압축기용 압축기 휠 |
| CN202180085406.2A CN116615606B (zh) | 2020-12-18 | 2021-11-25 | 用于内燃机的压缩机的压缩机叶轮 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020216280.8 | 2020-12-18 | ||
| DE102020216280.8A DE102020216280A1 (de) | 2020-12-18 | 2020-12-18 | Verdichterrad für den Verdichter einer Brennkraftmaschine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2022128396A1 true WO2022128396A1 (de) | 2022-06-23 |
Family
ID=78824785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2021/083062 Ceased WO2022128396A1 (de) | 2020-12-18 | 2021-11-25 | Verdichterrad für den verdichter einer brennkraftmaschine |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12129866B2 (de) |
| KR (1) | KR102811962B1 (de) |
| CN (1) | CN116615606B (de) |
| DE (1) | DE102020216280A1 (de) |
| WO (1) | WO2022128396A1 (de) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120121432A1 (en) * | 2009-07-29 | 2012-05-17 | Tokiya Wakai | Impeller of centrifugal compressor |
| US20170268527A1 (en) * | 2014-12-11 | 2017-09-21 | Kawasaki Jukogyo Kabushiki Kaisha | Impeller for supercharger |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3275000D1 (en) * | 1981-08-07 | 1987-02-12 | Holset Engineering Co | Impeller for centrifugal compressor |
| DE102007017822A1 (de) * | 2007-04-16 | 2008-10-23 | Continental Automotive Gmbh | Abgasturbolader |
| DE102007058525A1 (de) * | 2007-12-05 | 2009-06-10 | Bosch Mahle Turbo Systems Gmbh & Co. Kg | Verdichterlaufrad |
| FR2931214B1 (fr) * | 2008-05-15 | 2013-07-26 | Turbomeca | Pale de rouet de compresseur a raccordement evolutif |
| WO2015082624A1 (de) * | 2013-12-06 | 2015-06-11 | Abb Turbo Systems Ag | Verdichterrad |
| DE202015101910U1 (de) | 2015-04-01 | 2015-06-10 | Ford Global Technologies, Llc | Aufgeladene Brennkraftmaschine mit Verdichter |
| US10100841B2 (en) | 2016-03-21 | 2018-10-16 | General Electric Company | Centrifugal compressor and system |
| DE102016222789A1 (de) * | 2016-11-18 | 2018-05-24 | Bosch Mahle Turbo Systems Gmbh & Co. Kg | Laufrad für einen Abgasturbolader |
| WO2019239451A1 (ja) * | 2018-06-11 | 2019-12-19 | 三菱重工エンジン&ターボチャージャ株式会社 | 回転翼及びこの回転翼を備える遠心圧縮機 |
| DE102018222065A1 (de) * | 2018-12-18 | 2020-06-18 | Robert Bosch Gmbh | Kompressorrad zur Kompression eines fluiden Mediums |
| GB201902549D0 (en) * | 2019-02-26 | 2019-04-10 | Rolls Royce Plc | Ice crystal protection for a gas turbine engine |
| KR102730539B1 (ko) * | 2019-04-23 | 2024-11-14 | 현대자동차주식회사 | 터보차저 컴프레서휠 |
-
2020
- 2020-12-18 DE DE102020216280.8A patent/DE102020216280A1/de active Pending
-
2021
- 2021-11-25 WO PCT/EP2021/083062 patent/WO2022128396A1/de not_active Ceased
- 2021-11-25 CN CN202180085406.2A patent/CN116615606B/zh active Active
- 2021-11-25 KR KR1020237023275A patent/KR102811962B1/ko active Active
- 2021-11-25 US US18/257,775 patent/US12129866B2/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120121432A1 (en) * | 2009-07-29 | 2012-05-17 | Tokiya Wakai | Impeller of centrifugal compressor |
| US20170268527A1 (en) * | 2014-12-11 | 2017-09-21 | Kawasaki Jukogyo Kabushiki Kaisha | Impeller for supercharger |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116615606B (zh) | 2026-01-02 |
| US12129866B2 (en) | 2024-10-29 |
| CN116615606A (zh) | 2023-08-18 |
| DE102020216280A1 (de) | 2022-06-23 |
| KR20230113401A (ko) | 2023-07-28 |
| US20240255001A1 (en) | 2024-08-01 |
| KR102811962B1 (ko) | 2025-05-22 |
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