DE9303711U1 - - Google Patents

Info

Publication number
DE9303711U1
DE9303711U1 DE9303711U DE9303711U DE9303711U1 DE 9303711 U1 DE9303711 U1 DE 9303711U1 DE 9303711 U DE9303711 U DE 9303711U DE 9303711 U DE9303711 U DE 9303711U DE 9303711 U1 DE9303711 U1 DE 9303711U1
Authority
DE
Germany
Prior art keywords
disc
blades
wheel
blade ring
cover disc
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
Application number
DE9303711U
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Grenzebach GmbH and Co KG
Original Assignee
Babcock BSH AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Babcock BSH AG filed Critical Babcock BSH AG
Priority to DE9303711U priority Critical patent/DE9303711U1/de
Publication of DE9303711U1 publication Critical patent/DE9303711U1/de
Priority to EP94100758A priority patent/EP0616131B1/en
Priority to AT94100758T priority patent/ATE145451T1/en
Priority to DE59401057T priority patent/DE59401057D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers

Abstract

In the case of conventional radial wheels, the outside diameter of the blade ring between hub disc and cover disc is constant. The problem here is that the flow rate decreases greatly in the vicinity of the cover disc. As a result, efficiency and power density of the wheel are impaired. Wheels are also already known, in the case of which the diameter of the blade ring increases from the hub disc to the cover disc by about 10.5 to 35 %. According to calculations of the inventor, undesired shear flows here, involving considerable losses, can be avoided only by twisting the blades. For the manufacture of twisted blades, complicated special tools are required, so that a single-piece or small-series production is not economical as a rule. The new wheel has blades (3) which are simple to manufacture and are plane or cylindrically curved. An increase in the efficiency and power density is achieved in that the diameter of the blade ring on the cover disc (2) is 1 to 6 % greater than on the hub disc (1). The wheel is particularly suitable for single-piece or small-series production. <IMAGE>
DE9303711U 1993-03-13 1993-03-13 Expired - Lifetime DE9303711U1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE9303711U DE9303711U1 (en) 1993-03-13 1993-03-13
EP94100758A EP0616131B1 (en) 1993-03-13 1994-01-20 Radial wheel
AT94100758T ATE145451T1 (en) 1993-03-13 1994-01-20 RADIAL IMPELLER
DE59401057T DE59401057D1 (en) 1993-03-13 1994-01-20 Radial impeller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE9303711U DE9303711U1 (en) 1993-03-13 1993-03-13

Publications (1)

Publication Number Publication Date
DE9303711U1 true DE9303711U1 (en) 1993-05-13

Family

ID=6890598

Family Applications (2)

Application Number Title Priority Date Filing Date
DE9303711U Expired - Lifetime DE9303711U1 (en) 1993-03-13 1993-03-13
DE59401057T Expired - Fee Related DE59401057D1 (en) 1993-03-13 1994-01-20 Radial impeller

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE59401057T Expired - Fee Related DE59401057D1 (en) 1993-03-13 1994-01-20 Radial impeller

Country Status (3)

Country Link
EP (1) EP0616131B1 (en)
AT (1) ATE145451T1 (en)
DE (2) DE9303711U1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0627560A1 (en) * 1993-06-04 1994-12-07 Alcatel SEL Aktiengesellschaft Radial blower
EP3181911A1 (en) * 2015-12-17 2017-06-21 ebm-papst Mulfingen GmbH & Co. KG Kantenberandung eines rotationselements und gebläserad

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI122563B (en) 2005-02-21 2012-03-30 Flaekt Woods Ab Centrifugal Impeller

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT343259B (en) * 1974-08-01 1978-05-26 Gebhardt Gmbh Wilhelm CENTRIFUGAL FAN WITH A CLOSED IMPELLER WITH CURVED PROFILED BLADES
EP0112932B1 (en) * 1982-12-29 1985-06-05 Wilhelm Gebhardt GmbH Radial ventilator with backwards-curved profiled blades
US4647271A (en) * 1984-06-08 1987-03-03 Hitachi, Ltd. Impeller of centrifugal blower

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR397702A (en) * 1908-05-28 1909-05-15 James Keith Improvements to rotary fans
GB191321353A (en) * 1913-09-29 1914-03-19 Ralph Hancock Improvements in Centrifugal Fans.
US1341882A (en) * 1915-09-07 1920-06-01 Buffalo Forge Co Centrifugal fan
GB139717A (en) * 1919-07-21 1920-03-11 William Patchett Denton Improvements in and connected with air blowers
DE1063323B (en) * 1957-06-29 1959-08-13 Willi Keil Centrifugal fan or pump
DE1046247B (en) * 1957-12-14 1958-12-11 Winkelstraeter G M B H Geb Impeller of centrifugal blowers and centrifugal fans
US3179329A (en) * 1961-08-16 1965-04-20 Ruth D Mayne Turbine type blower wheel
US3257071A (en) * 1964-06-26 1966-06-21 Rotron Mfg Co Impeller assembly
DE2940773C2 (en) * 1979-10-08 1986-08-14 Punker GmbH, 2330 Eckernförde High-performance centrifugal fan

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT343259B (en) * 1974-08-01 1978-05-26 Gebhardt Gmbh Wilhelm CENTRIFUGAL FAN WITH A CLOSED IMPELLER WITH CURVED PROFILED BLADES
EP0112932B1 (en) * 1982-12-29 1985-06-05 Wilhelm Gebhardt GmbH Radial ventilator with backwards-curved profiled blades
US4526506A (en) * 1982-12-29 1985-07-02 Wilhelm Gebhardt Gmbh Radial fan with backwardly curving blades
US4647271A (en) * 1984-06-08 1987-03-03 Hitachi, Ltd. Impeller of centrifugal blower
DE3520218C2 (en) * 1984-06-08 1989-11-23 Hitachi, Ltd., Tokio/Tokyo, Jp

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0627560A1 (en) * 1993-06-04 1994-12-07 Alcatel SEL Aktiengesellschaft Radial blower
EP3181911A1 (en) * 2015-12-17 2017-06-21 ebm-papst Mulfingen GmbH & Co. KG Kantenberandung eines rotationselements und gebläserad

Also Published As

Publication number Publication date
EP0616131B1 (en) 1996-11-20
ATE145451T1 (en) 1996-12-15
EP0616131A1 (en) 1994-09-21
DE59401057D1 (en) 1997-01-02

Similar Documents

Publication Publication Date Title
YU104204A (en) Improved turbine
DE9303711U1 (en)
ATE134423T1 (en) FAN IMPELLER
FR2361528A1 (en) RADIAL INLET GAS TURBINE ROTOR WHEEL
AU8398282A (en) Wind energy collecting device
ES279480U (en) Fan impeller for a radial fan. (Machine-translation by Google Translate, not legally binding)
GB1215623A (en) A method of making a torque converter and converters obtained by this method
GB799013A (en) Improvements in and relating to hydraulic reaction turbines
FR2431049A1 (en) RADIAL BLADE WHEEL
RU2090784C1 (en) Working wheel of axial fan
ATE158063T1 (en) HYDRODYNAMIC RETARDER
CN1035163A (en) Rotary wheel of water turbine with two fulcrum blades and cantilever blade
CN2276850Y (en) Diamond saw bit
SU1296739A1 (en) Double-stage hydraulic turbine
SU878973A1 (en) Centripetal gas turbine
RU2013647C1 (en) Vertical windwheel
SU1000573A1 (en) Hydraulic machine impeller
JPS57199449A (en) Motor with brake
RU2015420C1 (en) Centrifugal compressor wheel
FR2426150A1 (en) Rotor for continuous flow machines - has blades with ring-segment shaped roots with plane of symmetry angled as blade to rotor axis
JPS52140806A (en) Motor provided with fan of self cooling type
Werber Commerce Rules on(Malaysian) Steel Wire Rod
SU1657761A1 (en) Centrifugal compressor impeller
Druga Ways of Developing a Low Pressure Carburization Process
RU94022735A (en) MASS FOR THE MANUFACTURE OF THE ABRASIVE CUTTING CIRCLE