EP0133845A2 - Roue pour compresseurs et ventilateurs centrifuges - Google Patents

Roue pour compresseurs et ventilateurs centrifuges Download PDF

Info

Publication number
EP0133845A2
EP0133845A2 EP84830232A EP84830232A EP0133845A2 EP 0133845 A2 EP0133845 A2 EP 0133845A2 EP 84830232 A EP84830232 A EP 84830232A EP 84830232 A EP84830232 A EP 84830232A EP 0133845 A2 EP0133845 A2 EP 0133845A2
Authority
EP
European Patent Office
Prior art keywords
appendage
blade
rotor
blades
rotor according
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.)
Granted
Application number
EP84830232A
Other languages
German (de)
English (en)
Other versions
EP0133845A3 (en
EP0133845B1 (fr
Inventor
Erminio Coral
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.)
Coral SpA
Original Assignee
Coral SpA
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 Coral SpA filed Critical Coral SpA
Priority to AT84830232T priority Critical patent/ATE36588T1/de
Publication of EP0133845A2 publication Critical patent/EP0133845A2/fr
Publication of EP0133845A3 publication Critical patent/EP0133845A3/en
Application granted granted Critical
Publication of EP0133845B1 publication Critical patent/EP0133845B1/fr
Expired legal-status Critical Current

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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
    • F04D29/26—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
    • 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
    • F05D2230/00—Manufacture
    • F05D2230/50—Building or constructing in particular ways
    • F05D2230/54—Building or constructing in particular ways by sheet metal manufacturing

Definitions

  • the present invention relates to rotors for centrifugal compressors and fans of the type comprising a ring of blades connected to a central hub having an annular flange.
  • the object of the invention is to provide a rotor of the type specified above,which requires a smaller number of parts for its manufacture than is required at present so as to render it simpler and cheaper to produce.
  • each blade has at its root an integral appendage lying in a plane perpendicular to the axis of rotation,and in that the appendage of each blade is fixed both to the appendage of one of the blades adjacent thereto and to the flange of the hub.
  • the rotor blades are cylindrical with generatrices parallel to the axis of rotation.
  • each of the blades 1 has an integral appendage 2 lying in a plane perpendicular to the axis of rotation.
  • the appendage 2 is conveniently formed in one piece with the respective blade 1 by pressing from sheet metal.
  • the appendage 2 has two side edges 2a, 2b with circular profiles concentric with the axis of rotation, and an end edge 2c having a concave profile with a curvature equal to that of the blades 1.
  • the appendage 2 has a raised part 3 close to the root of the respective blade 1.
  • the appendage 2 also has a series of holes 4 close to the end edge 2c and a series of holes 5 in correspondence with its raised part 3.
  • each appendage 2 adjacent the end edge 2c is located beneath the raised part 3 of the appendage of the blade adjacent thereto.
  • the rotor hub, indicated 6, is provided with a flange 7 having a ring of holes 8.
  • the appendages of two adjacent blades are connected together by rivets 9 which pass through the holes 4 and 5, and by longer rivets 10 which pass through the radially innermost holes 4 and 5 and through the holes 8 in the flange 7 of the hub 6, thus connecting the blades to the hub without the need for intermediate elements.
  • the appendages 2 integral with the blades 1 in the rotor according to the present invention also fulfil the function of a disc for partly closing the rotor.
  • a rotor of the closed type could be formed by providing each blade with an integral appendage located at the opposite end to the root and lying in a plane perpendicular to the axis of rotation, for connecting together the appendages of adjacent blades in order to fulfil the function of the aperture disc indicated 11 in Figure 2.
  • connection between the roots of the blades and the flange of the hub could be achieved in this case either by the conventional method, that is, by means of a disc fixed to both the roots of the blades (which lack orthogonal appendages) and to the flange of the hub, or, more advantageously, by again providing each blade with integral appendages at their roots, as described above.
  • connection between the appendages 2 of the blades 1 and the flange 7 of the hub 6 could be achieved by bolts or other connecting means which allow easy replacement of the blades in the event of breakage thereof during operation of the rotor, instead of by rivets.
  • connection could be achieved by welding.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Wind Motors (AREA)
EP84830232A 1983-08-01 1984-07-31 Roue pour compresseurs et ventilateurs centrifuges Expired EP0133845B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84830232T ATE36588T1 (de) 1983-08-01 1984-07-31 Laufrad fuer radialverdichter und geblaese.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT6783383 1983-08-01
IT67833/83A IT1159048B (it) 1983-08-01 1983-08-01 Girante per ventilatori e compressori centrifughi

Publications (3)

Publication Number Publication Date
EP0133845A2 true EP0133845A2 (fr) 1985-03-06
EP0133845A3 EP0133845A3 (en) 1985-07-10
EP0133845B1 EP0133845B1 (fr) 1988-08-17

Family

ID=11305639

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84830232A Expired EP0133845B1 (fr) 1983-08-01 1984-07-31 Roue pour compresseurs et ventilateurs centrifuges

Country Status (4)

Country Link
EP (1) EP0133845B1 (fr)
AT (1) ATE36588T1 (fr)
DE (1) DE3473494D1 (fr)
IT (1) IT1159048B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2395234A (en) * 2002-11-15 2004-05-19 Rolls Royce Plc Vane with mounted base
CN103307025A (zh) * 2013-06-28 2013-09-18 开平市永强风机制造有限公司 一种鼓风机的叶轮
CN104797825A (zh) * 2013-05-10 2015-07-22 Lg电子株式会社 离心风扇的制造方法
US9995311B2 (en) 2013-05-10 2018-06-12 Lg Electronics Inc. Centrifugal fan
US11261875B2 (en) * 2017-01-30 2022-03-01 Rolls-Royce North American Technologies, Inc. Turbomachine stage and method of making same

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1437610A (en) * 1922-12-05 Melach j
DE370845C (de) * 1920-12-24 1923-03-08 Siemens Schuckertwerke G M B H Ventilator, insbesondere fuer elektrische Maschinen
US1953064A (en) * 1931-12-19 1934-04-03 Parsons C A & Co Ltd Centrifugal apparatus such as fans, impellers, and the like
DE968553C (de) * 1943-10-10 1958-03-06 Siemens Ag Luefter, insbesondere fuer elektrische Maschinen
GB1073490A (en) * 1965-02-18 1967-06-28 Gen Motors Corp Centrifugal compressor impellers
DE2520416A1 (de) * 1975-05-07 1976-11-18 Bosch Siemens Hausgeraete Geblaeserad

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1437610A (en) * 1922-12-05 Melach j
DE370845C (de) * 1920-12-24 1923-03-08 Siemens Schuckertwerke G M B H Ventilator, insbesondere fuer elektrische Maschinen
US1953064A (en) * 1931-12-19 1934-04-03 Parsons C A & Co Ltd Centrifugal apparatus such as fans, impellers, and the like
DE968553C (de) * 1943-10-10 1958-03-06 Siemens Ag Luefter, insbesondere fuer elektrische Maschinen
GB1073490A (en) * 1965-02-18 1967-06-28 Gen Motors Corp Centrifugal compressor impellers
DE2520416A1 (de) * 1975-05-07 1976-11-18 Bosch Siemens Hausgeraete Geblaeserad

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2395234A (en) * 2002-11-15 2004-05-19 Rolls Royce Plc Vane with mounted base
GB2395234B (en) * 2002-11-15 2005-04-27 Rolls Royce Plc Vane with modified base
US6971845B2 (en) 2002-11-15 2005-12-06 Rolls-Royce Plc Vane with modified base
CN104797825A (zh) * 2013-05-10 2015-07-22 Lg电子株式会社 离心风扇的制造方法
CN104797825B (zh) * 2013-05-10 2017-06-30 Lg电子株式会社 离心风扇的制造方法
US9995311B2 (en) 2013-05-10 2018-06-12 Lg Electronics Inc. Centrifugal fan
US10662968B2 (en) 2013-05-10 2020-05-26 Lg Electronics Inc. Method of manufacturing centrifugal fan
CN103307025A (zh) * 2013-06-28 2013-09-18 开平市永强风机制造有限公司 一种鼓风机的叶轮
US11261875B2 (en) * 2017-01-30 2022-03-01 Rolls-Royce North American Technologies, Inc. Turbomachine stage and method of making same

Also Published As

Publication number Publication date
IT1159048B (it) 1987-02-25
DE3473494D1 (en) 1988-09-22
ATE36588T1 (de) 1988-09-15
IT8367833A0 (it) 1983-08-01
EP0133845A3 (en) 1985-07-10
EP0133845B1 (fr) 1988-08-17

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