US3846045A - Pump impellers for cooling systems of i.c.e. - Google Patents
Pump impellers for cooling systems of i.c.e. Download PDFInfo
- Publication number
- US3846045A US3846045A US00349029A US34902973A US3846045A US 3846045 A US3846045 A US 3846045A US 00349029 A US00349029 A US 00349029A US 34902973 A US34902973 A US 34902973A US 3846045 A US3846045 A US 3846045A
- Authority
- US
- United States
- Prior art keywords
- impeller
- sleeve
- hub
- outflaring
- pump impeller
- 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 - Lifetime
Links
Images
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
- F04D29/2205—Conventional flow pattern
- F04D29/2222—Construction and assembly
- F04D29/2227—Construction and assembly for special materials
-
- 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
- F04D29/02—Selection of particular materials
- F04D29/026—Selection of particular materials 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
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/20—Mounting rotors on shafts
-
- 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
- F05D2300/00—Materials; Properties thereof
- F05D2300/40—Organic materials
- F05D2300/43—Synthetic polymers, e.g. plastics; Rubber
-
- 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
- F05D2300/00—Materials; Properties thereof
- F05D2300/60—Properties or characteristics given to material by treatment or manufacturing
- F05D2300/603—Composites; e.g. fibre-reinforced
-
- 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
- F05D2300/00—Materials; Properties thereof
- F05D2300/60—Properties or characteristics given to material by treatment or manufacturing
- F05D2300/615—Filler
Definitions
- ABSTRACT Forelgn Apphcatlon Prwmy Data This composite impeller is intended for use in a pump Apr. 17, France incorporated in the cooling ystem of an internal ombustion engine and comprises a metal hub permitting [52] US. Cl 416/230, 416/224, 416/241 the tight fitting of the impeller on the pump Shaft, and [51] Int. Cl.
- This invention relates in general to pumps of the type used in the cooling systems of internal combustion engines and has specific reference to an improved impeller or rotor for such pumps.
- this impeller for the cooling systems of internal combustion engines which consisted essentially of plastic material and had a strength at least equal or comparable to that of conventional metal turbines; to this end, this impeller is characterised in that it comprise a metal hub adapted to be force-fitted to the pump shaft, the impeller proper being moulded on said hub and consisting of a mixture of thermosetting resin having a low coefficient of water absorption under extreme temperature conditions, with a water-repellent filler capable of preserving its original dimensions in the presence of water.
- ⁇ glass fibres may also be used provided that they are of As a thermosetting resin, certain formophenolic resins (of the Notolaque" type are adequate for the purpose.
- the impeller fitted to a metal hub comprises an impeller body constituting the blade hub and having a diameter increasing gradually towards the outer periphery, said body being bounded on the inner side by an internally concave surface from which the impeller blade project; the maximum diameter of the impeller body is preferably the same as the outer diameter of said blades, so that the assembly is inscribed in a cylinder.
- the impeller body may comprise on its rear face a sealing ring adapted to be kept in frictional contact with a counter-ring associated with the adjacent wall of the water pump in order to provide the necessary fluid-tightness; if desired, this counter-ring may be fitted in the impeller body proper with the interposition of an elastic material such as rubber.
- This type of impeller can easily be force-fitted to the pump shaft by using a press and a suitable jig; the press fit requires in this case a force of the order of 200 to 300 DaN when the fit or clamping pressure is of the order of a few hundredths of mm between the hub and the pump shaft, the latter having a diameter of 16 mm,
- the metal hub of this impeller comprises a sleeve constituting the hub proper which is connected through a curved intermediate portion to an end or outer portion and it is this portion alone that is embedded in the plastic impeller proper.
- FIGS. 1 to 4inclusive are longitudinal sections showing four different forms of embodiment of the composite impeller of this invention.
- FIGS. 5 and 6 are a diametral section and a front view, respectively, of the metal hub utilized in this invention.
- FIG. 7 is a diametral section illustrating on a larger scale a modified form of embodiment of the impeller of this invention.
- FIGS. 8 to 12 illustrate other modifications of the metal hub incorporated in the pump impeller
- FIG. 13 is a sectional view of another form of embodiment of this invention, showing the impeller fitted to the pump shaft, and
- FIG. 14 is another modified form of embodiment of the metal hub of the pump impeller.
- the impellers or rotors illustrated comprise a metal hub 1 adapted to be pressor force-fitted to the pump shaft, this hub 1 constituting an insert of which one portion is adapted to be embedded by molding in a sleeve or impeller body 2; to this end, each metal hub has an integral castellated outer peripheral portion 3 affording a reliable anchoring of the hub 1 in the body 2; the impeller body may have a wide range of shapes and dimensions as required for the specific use for which the impeller is intended.
- the diameter of the impeller body 2 illustrated in FIGS. 1 and 2 increases gradually from its front end 4 to its rear end 5; on the front side, it is bounded by a concave surface 6 facing forwards and upwards, and comprises in this example six radial blades 7 of which the outer edge 8 is adapted to be inscribed in a cylinder concentric to the impeller axis; furthermore, on its rear side the impeller body 2 has fitted therein a sealing ring 9 with the interposition of a flanged rubber ring 10.
- the blades are not radial and therefore their upper and lower sections 11, 12 taken through a same diametral plane differ in shape;
- the sealing ring 13 of FIG. 3 is fitted to the tubular rear extension 14 of the impeller body 2 with the interposition of a flanged rubber ring 15 formed with an integral annular bead 16 providing a static seal between the shaft 17 to which the impeller is fitted and the impeller body;
- the sealing ring is replaced by a deposit 18 of suitable material of refractory or other nature, formed by using a plasma gun.
- the pressed metal hub 22 illustrated in FIG. 7 and force fitted to the shaft 20 is so shaped that its outer peripheral portion 26 remains static while the hubforming portion and the curved intermediate portion 24 expand slightly during the press-fitting operation.
- the plastic impeller 21 is driven and retained positively in the metal hub by means of the peripheral outer portion 26, a hollow space 23 being easily obtained on either side of the intermediate portion 24 during the molding operation. It is clear that the axial off-set between the portions 24 and 26 of this hub is characterised by an indirect relationship between the distortions of portion 24 and those of portion 26, thus reducing their magnitude.
- FIGS. 8 to 12 inclusive of the drawings are self-explanatory.
- the hub is machined from bar stock metal on a lathe, so that substantial differences in thickness between the various cross-sectional portions can be obtained.
- thermosetting resin mentioned hereinabove
- this addition should be kept within reasonably low limits, for example less than 30 percent by weight, in order to avoid any detrimental influence on the characteristics of the basic mixture.
- Pump impeller for cooling systems of internal combustion engines comprising a metal hub adapted to be force fitted to an engine shaft and having an outflaring portion at its outer end, a sleeve molded from thermosetting resin having a low hot-water absorption coefficient and a thickness increasing from its inner face to its outer face anchored to the outflaring hub portion, a rubber ring fitted into the rear face of said sleeve, a packing ring securing said rubber ring to the rear face of said sleeve, and impeller blades having their outer edges inscribed in a cylinder concentric to the impeller axis and formed integrally with said sleeve.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7213408A FR2181111A5 (xx) | 1972-04-17 | 1972-04-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3846045A true US3846045A (en) | 1974-11-05 |
Family
ID=9096968
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00349029A Expired - Lifetime US3846045A (en) | 1972-04-17 | 1973-04-09 | Pump impellers for cooling systems of i.c.e. |
Country Status (3)
Country | Link |
---|---|
US (1) | US3846045A (xx) |
BE (1) | BE798278A (xx) |
FR (1) | FR2181111A5 (xx) |
Cited By (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4147470A (en) * | 1977-01-31 | 1979-04-03 | National Union Electric Corporation | Insulated fan for electric appliance |
US4639193A (en) * | 1984-11-09 | 1987-01-27 | Siemens Aktiengesellschaft | Fan wheel for radial fan |
US4715780A (en) * | 1984-09-10 | 1987-12-29 | Nippon Seiko Kabushiki Kaisha | Water pump |
US4746271A (en) * | 1987-03-25 | 1988-05-24 | Hayes-Albion Corporation | Synthetic fan blade |
US4747900A (en) * | 1984-07-07 | 1988-05-31 | Rolls-Royce Plc | Method of manufacture of compressor rotor assembly |
US4762465A (en) * | 1985-06-29 | 1988-08-09 | Klifa-Fahrzeugteile Gmbh + Co. | Water pump impeller |
US4767278A (en) * | 1981-10-06 | 1988-08-30 | Enderlein Jr Emmanuel X | Boat propeller |
US4786347A (en) * | 1984-07-07 | 1988-11-22 | Rolls-Royce Plc | Method of manufacturing an annular bladed member having an integral shroud |
US4826645A (en) * | 1984-07-07 | 1989-05-02 | Rolls-Royce Limited | Method of making an integral bladed member |
US4925366A (en) * | 1989-07-03 | 1990-05-15 | General Motors Corporation | Combined coolant pump impeller and seal assembly |
US5154574A (en) * | 1990-08-06 | 1992-10-13 | Ed Reinhorn | Gearless air motor |
EP0828081A1 (en) * | 1996-09-06 | 1998-03-11 | Honda Giken Kogyo Kabushiki Kaisha | Pump and medium circulation apparatus |
EP0856666A1 (en) * | 1997-01-31 | 1998-08-05 | Ebara Corporation | Liquid delivery device, method of controlling such liquid delivery device, and liquid delivery pump |
US6328528B1 (en) | 2000-04-25 | 2001-12-11 | Freudenberg-Nok General Partnership | Elastomeric pump impeller |
US6402460B1 (en) * | 2000-08-01 | 2002-06-11 | Delphi Technologies, Inc. | Abrasion wear resistant fuel pump |
US6685428B1 (en) | 2000-10-04 | 2004-02-03 | Freudenberg-Nok General Partnership | Integrated boot, seal and impeller system |
US20080104837A1 (en) * | 2006-11-02 | 2008-05-08 | Sigma Co., Ltd. | Impeller |
US20110173812A1 (en) * | 2010-01-21 | 2011-07-21 | Runtech Systems Oy | Method for manufacturing the impeller of a centrifugal compressor |
US20110275884A1 (en) * | 2008-12-05 | 2011-11-10 | Ecp Entwicklungsgesellschaft Mbh | Fluid pump with a rotor |
ITCO20110064A1 (it) * | 2011-12-14 | 2013-06-15 | Nuovo Pignone Spa | Macchina rotante comprendente un rotore con una girante composita ed un albero metallico |
CN104514747A (zh) * | 2014-12-23 | 2015-04-15 | 江门麦加道机电厂有限公司 | 一种污水泵叶轮 |
CN104806562A (zh) * | 2015-04-08 | 2015-07-29 | 华中科技大学 | 一种微型旋转机械泵的叶轮固定方法 |
US9771801B2 (en) | 2010-07-15 | 2017-09-26 | Ecp Entwicklungsgesellschaft Mbh | Rotor for a pump, produced with a first elastic material |
US9810230B2 (en) | 2009-05-08 | 2017-11-07 | Nuovo Pignone Srl | Impeller for a turbomachine and method for attaching a shroud to an impeller |
US9810235B2 (en) | 2009-11-23 | 2017-11-07 | Massimo Giannozzi | Mold for a centrifugal impeller, mold inserts and method for building a centrifugal impeller |
US9816518B2 (en) | 2009-11-23 | 2017-11-14 | Massimo Giannozzi | Centrifugal impeller and turbomachine |
US11162505B2 (en) | 2013-12-17 | 2021-11-02 | Nuovo Pignone Srl | Impeller with protection elements and centrifugal compressor |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2449596A1 (de) * | 1974-10-18 | 1976-04-29 | Bosch Gmbh Robert | Geblaese |
DE3248074C2 (de) * | 1982-12-24 | 1985-10-17 | Goetze Ag, 5093 Burscheid | Dichtungseinheit für insbesondere Flüssigkeitspumpen |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2115997A (en) * | 1935-11-19 | 1938-05-03 | Morse Bros Machinery Company | Impeller and lining construction |
US2220669A (en) * | 1936-06-26 | 1940-11-05 | Allen Sherman Hoff Co | Impeller for centrifugal pumps |
DE1115585B (de) * | 1958-10-04 | 1961-10-19 | Siemens Ag | Schaufelrad fuer selbstansaugende Kreisel-pumpen, insbesondere Seitenkanalpumpen |
CH359036A (fr) * | 1958-10-29 | 1961-12-15 | Gueytron Jean Claude Roland | Rotor pour pompe rotative |
US3224509A (en) * | 1964-04-17 | 1965-12-21 | Columbian Bronze Corp | Boat propeller |
US3233678A (en) * | 1964-09-14 | 1966-02-08 | John B Wilk | Marine propeller |
US3256939A (en) * | 1965-01-11 | 1966-06-21 | Matthew J Novak | Marine propeller |
US3318388A (en) * | 1966-01-21 | 1967-05-09 | Otto L Bihlmire | Marine propeller |
US3408944A (en) * | 1966-12-02 | 1968-11-05 | Sta Rite Industries | Impeller construction for a centrifugal pump |
DE1950139A1 (de) * | 1969-10-04 | 1971-04-15 | Schloz Motor Condensator | Luefterrad aus Kunststoff |
US3659471A (en) * | 1969-12-06 | 1972-05-02 | Karl Marsch | Metal pulley with detachable plastic fan |
US3751181A (en) * | 1970-01-31 | 1973-08-07 | Aisin Seiki | Fan for cooling automotive vehicle engine |
-
1972
- 1972-04-17 FR FR7213408A patent/FR2181111A5/fr not_active Expired
-
1973
- 1973-04-09 US US00349029A patent/US3846045A/en not_active Expired - Lifetime
- 1973-04-16 BE BE130066A patent/BE798278A/xx not_active IP Right Cessation
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2115997A (en) * | 1935-11-19 | 1938-05-03 | Morse Bros Machinery Company | Impeller and lining construction |
US2220669A (en) * | 1936-06-26 | 1940-11-05 | Allen Sherman Hoff Co | Impeller for centrifugal pumps |
DE1115585B (de) * | 1958-10-04 | 1961-10-19 | Siemens Ag | Schaufelrad fuer selbstansaugende Kreisel-pumpen, insbesondere Seitenkanalpumpen |
CH359036A (fr) * | 1958-10-29 | 1961-12-15 | Gueytron Jean Claude Roland | Rotor pour pompe rotative |
US3224509A (en) * | 1964-04-17 | 1965-12-21 | Columbian Bronze Corp | Boat propeller |
US3233678A (en) * | 1964-09-14 | 1966-02-08 | John B Wilk | Marine propeller |
US3256939A (en) * | 1965-01-11 | 1966-06-21 | Matthew J Novak | Marine propeller |
US3318388A (en) * | 1966-01-21 | 1967-05-09 | Otto L Bihlmire | Marine propeller |
US3408944A (en) * | 1966-12-02 | 1968-11-05 | Sta Rite Industries | Impeller construction for a centrifugal pump |
DE1950139A1 (de) * | 1969-10-04 | 1971-04-15 | Schloz Motor Condensator | Luefterrad aus Kunststoff |
US3659471A (en) * | 1969-12-06 | 1972-05-02 | Karl Marsch | Metal pulley with detachable plastic fan |
US3751181A (en) * | 1970-01-31 | 1973-08-07 | Aisin Seiki | Fan for cooling automotive vehicle engine |
Cited By (44)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4147470A (en) * | 1977-01-31 | 1979-04-03 | National Union Electric Corporation | Insulated fan for electric appliance |
US4767278A (en) * | 1981-10-06 | 1988-08-30 | Enderlein Jr Emmanuel X | Boat propeller |
US4747900A (en) * | 1984-07-07 | 1988-05-31 | Rolls-Royce Plc | Method of manufacture of compressor rotor assembly |
US4786347A (en) * | 1984-07-07 | 1988-11-22 | Rolls-Royce Plc | Method of manufacturing an annular bladed member having an integral shroud |
US4826645A (en) * | 1984-07-07 | 1989-05-02 | Rolls-Royce Limited | Method of making an integral bladed member |
US4715780A (en) * | 1984-09-10 | 1987-12-29 | Nippon Seiko Kabushiki Kaisha | Water pump |
US4639193A (en) * | 1984-11-09 | 1987-01-27 | Siemens Aktiengesellschaft | Fan wheel for radial fan |
US4762465A (en) * | 1985-06-29 | 1988-08-09 | Klifa-Fahrzeugteile Gmbh + Co. | Water pump impeller |
US4746271A (en) * | 1987-03-25 | 1988-05-24 | Hayes-Albion Corporation | Synthetic fan blade |
US4925366A (en) * | 1989-07-03 | 1990-05-15 | General Motors Corporation | Combined coolant pump impeller and seal assembly |
US5154574A (en) * | 1990-08-06 | 1992-10-13 | Ed Reinhorn | Gearless air motor |
US6126386A (en) * | 1996-09-06 | 2000-10-03 | Honda Giken Kogyo Kabushiki Kaisha | Pump and medium circulation apparatus |
EP0828081A1 (en) * | 1996-09-06 | 1998-03-11 | Honda Giken Kogyo Kabushiki Kaisha | Pump and medium circulation apparatus |
EP0856666A1 (en) * | 1997-01-31 | 1998-08-05 | Ebara Corporation | Liquid delivery device, method of controlling such liquid delivery device, and liquid delivery pump |
US6092994A (en) * | 1997-01-31 | 2000-07-25 | Ebara Corporation | Liquid delivery device, method of controlling such liquid delivery device, and liquid delivery pump |
US6328528B1 (en) | 2000-04-25 | 2001-12-11 | Freudenberg-Nok General Partnership | Elastomeric pump impeller |
US6402460B1 (en) * | 2000-08-01 | 2002-06-11 | Delphi Technologies, Inc. | Abrasion wear resistant fuel pump |
US6685428B1 (en) | 2000-10-04 | 2004-02-03 | Freudenberg-Nok General Partnership | Integrated boot, seal and impeller system |
US8033793B2 (en) * | 2006-11-02 | 2011-10-11 | Sigma Co., Ltd. | Impeller |
US20080104837A1 (en) * | 2006-11-02 | 2008-05-08 | Sigma Co., Ltd. | Impeller |
US11852155B2 (en) | 2008-12-05 | 2023-12-26 | Ecp Entwicklungsgesellschaft Mbh | Fluid pump with a rotor |
US20110275884A1 (en) * | 2008-12-05 | 2011-11-10 | Ecp Entwicklungsgesellschaft Mbh | Fluid pump with a rotor |
US10662967B2 (en) | 2008-12-05 | 2020-05-26 | Ecp Entwicklungsgesellschaft Mbh | Fluid pump with a rotor |
US10495101B2 (en) | 2008-12-05 | 2019-12-03 | Ecp Entwicklungsgesellschaft Mbh | Fluid pump with a rotor |
US8721516B2 (en) * | 2008-12-05 | 2014-05-13 | Ecp Entwicklungsgesellschaft Mbh | Fluid pump with a rotor |
US9964115B2 (en) | 2008-12-05 | 2018-05-08 | Ecp Entwicklungsgesellschaft Mbh | Fluid pump with a rotor |
US9404505B2 (en) | 2008-12-05 | 2016-08-02 | Ecp Entwicklungsgesellschaft Mbh | Fluid pump with a rotor |
US9810230B2 (en) | 2009-05-08 | 2017-11-07 | Nuovo Pignone Srl | Impeller for a turbomachine and method for attaching a shroud to an impeller |
US9810235B2 (en) | 2009-11-23 | 2017-11-07 | Massimo Giannozzi | Mold for a centrifugal impeller, mold inserts and method for building a centrifugal impeller |
US9816518B2 (en) | 2009-11-23 | 2017-11-14 | Massimo Giannozzi | Centrifugal impeller and turbomachine |
US9492970B2 (en) * | 2010-01-21 | 2016-11-15 | Runtech Systems Oy | Method for manufacturing the impeller of a centrifugal compressor |
US20110173812A1 (en) * | 2010-01-21 | 2011-07-21 | Runtech Systems Oy | Method for manufacturing the impeller of a centrifugal compressor |
US12065941B2 (en) | 2010-07-15 | 2024-08-20 | Ecp Entwicklungsgesellschaft Mbh | Rotor for a pump, produced with a first elastic material |
US9771801B2 (en) | 2010-07-15 | 2017-09-26 | Ecp Entwicklungsgesellschaft Mbh | Rotor for a pump, produced with a first elastic material |
US10584589B2 (en) | 2010-07-15 | 2020-03-10 | Ecp Entwicklungsgellschaft Mbh | Rotor for a pump having helical expandable blades |
US11702938B2 (en) | 2010-07-15 | 2023-07-18 | Ecp Entwicklungsgesellschaft Mbh | Rotor for a pump, produced with a first elastic material |
US9797255B2 (en) | 2011-12-14 | 2017-10-24 | Nuovo Pignone S.P.A. | Rotary machine including a machine rotor with a composite impeller portion and a metal shaft portion |
JP2015500438A (ja) * | 2011-12-14 | 2015-01-05 | ヌオーヴォ ピニォーネ ソシエタ ペル アチオニ | 複合羽根車部および金属シャフト部を備えた機械回転子を含む回転機械 |
WO2013087496A1 (en) * | 2011-12-14 | 2013-06-20 | Nuovo Pignone S.P.A | Rotary machine including a machine rotor with a composite impeller portion and a metal shaft portion |
ITCO20110064A1 (it) * | 2011-12-14 | 2013-06-15 | Nuovo Pignone Spa | Macchina rotante comprendente un rotore con una girante composita ed un albero metallico |
US11162505B2 (en) | 2013-12-17 | 2021-11-02 | Nuovo Pignone Srl | Impeller with protection elements and centrifugal compressor |
CN104514747A (zh) * | 2014-12-23 | 2015-04-15 | 江门麦加道机电厂有限公司 | 一种污水泵叶轮 |
CN104806562A (zh) * | 2015-04-08 | 2015-07-29 | 华中科技大学 | 一种微型旋转机械泵的叶轮固定方法 |
CN104806562B (zh) * | 2015-04-08 | 2017-12-22 | 华中科技大学 | 一种微型旋转机械泵的叶轮固定结构及固定方法 |
Also Published As
Publication number | Publication date |
---|---|
FR2181111A5 (xx) | 1973-11-30 |
BE798278A (fr) | 1973-08-16 |
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