ATE145451T1 - RADIAL IMPELLER - Google Patents

RADIAL IMPELLER

Info

Publication number
ATE145451T1
ATE145451T1 AT94100758T AT94100758T ATE145451T1 AT E145451 T1 ATE145451 T1 AT E145451T1 AT 94100758 T AT94100758 T AT 94100758T AT 94100758 T AT94100758 T AT 94100758T AT E145451 T1 ATE145451 T1 AT E145451T1
Authority
AT
Austria
Prior art keywords
disc
blades
wheel
blade ring
cover disc
Prior art date
Application number
AT94100758T
Other languages
German (de)
Inventor
Ernst Wiemann
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
Application granted granted Critical
Publication of ATE145451T1 publication Critical patent/ATE145451T1/en

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>
AT94100758T 1993-03-13 1994-01-20 RADIAL IMPELLER ATE145451T1 (en)

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
ATE145451T1 true ATE145451T1 (en) 1996-12-15

Family

ID=6890598

Family Applications (1)

Application Number Title Priority Date Filing Date
AT94100758T ATE145451T1 (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)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4318580A1 (en) * 1993-06-04 1994-12-08 Sel Alcatel Ag Radial fan
FI122563B (en) 2005-02-21 2012-03-30 Flaekt Woods Ab Centrifugal Impeller
DE102015122132A1 (en) * 2015-12-17 2017-06-22 Ebm-Papst Mulfingen Gmbh & Co. Kg Edgebanding of a rotating element and impeller

Family Cites Families (12)

* 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
DE2437001B2 (en) * 1974-08-01 1978-01-26 Wilhelm Gebhardt GmbH, 7112 Waidenburg RADIAL FAN WITH BACK CURVED PROFILED BLADES
DE2940773C2 (en) * 1979-10-08 1986-08-14 Punker GmbH, 2330 Eckernförde High-performance centrifugal fan
DE3264089D1 (en) * 1982-12-29 1985-07-11 Gebhardt Gmbh Wilhelm Radial ventilator with backwards-curved profiled blades
DE3520218A1 (en) * 1984-06-08 1985-12-12 Hitachi, Ltd., Tokio/Tokyo IMPELLER FOR A RADIAL BLOWER

Also Published As

Publication number Publication date
DE59401057D1 (en) 1997-01-02
EP0616131A1 (en) 1994-09-21
DE9303711U1 (en) 1993-05-13
EP0616131B1 (en) 1996-11-20

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Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee