GB981188A - Improved helicoidal fan - Google Patents

Improved helicoidal fan

Info

Publication number
GB981188A
GB981188A GB4509361A GB4509361A GB981188A GB 981188 A GB981188 A GB 981188A GB 4509361 A GB4509361 A GB 4509361A GB 4509361 A GB4509361 A GB 4509361A GB 981188 A GB981188 A GB 981188A
Authority
GB
United Kingdom
Prior art keywords
blade
tip
root
flow
fan
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
Application number
GB4509361A
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.)
Howden Solyvent Ventec SAS
Original Assignee
Societe Lyonnaise de Ventilation Industrielle Solyvent
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 Societe Lyonnaise de Ventilation Industrielle Solyvent filed Critical Societe Lyonnaise de Ventilation Industrielle Solyvent
Publication of GB981188A publication Critical patent/GB981188A/en
Expired 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/541—Specially adapted for elastic fluid pumps
    • F04D29/545—Ducts
    • F04D29/547—Ducts having a special shape in order to influence fluid flow
    • 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
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38—Blades
    • F04D29/384—Blades characterised by form

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

981,188. Axial-flow fans. SOC. LYONNAISE DE VENTILATION INDUSTRIELLE SOLYVENT. Dec. 15, 1961 [Dec. 19, 1960], No. 45093/61. Heading F1C. In an axial-flow fan comprising at least two blades mounted on a hub and the tips of which move in the immediate vicinity of a stationary outer casing, the maximum thickness of the transverse section of each blade taken on a cylinder coaxial with the impeller increases from the root of the blade to the tip. Figs. 4, 5 and 6 show cross-sections of a rotor blade of the fan shown in Fig. 3, taken on cylinders IV-IV, V-V and VI-VI respectively. As shown, the maximum thickness of the blade increases from a value LVI near the root to a value LIV near the tip. The maximum thickness is measured in a direction at right angles to the axis of rotation and is located at a distance from the leading edge of the blade equal to between “ and ¢ the chord length. The chord length may increase from root to tip. Instead of being cylindrical, the outer casing 10 or the impeller hub 11, or both, may be conical to accelerate the flow from inlet to outlet. Preferably, the ratio of the sum of the maximum thicknesses of all the blades to the circumference of the cylinder on which the blade cross-section under consideration is taken is greater than or equal to 0À08, at least for one cross-section. In the case of a fan having a cylindrical outer casing, the ratio preferably increases from root to tip, and reaches a value equal to or greater than 0À08 at the tip. The effect of all these measures is to reduce breakaway of flow from the impeller blades and to make the pressure more uniform from the hub to the outer periphery, thereby improving performance and reducing noise.
GB4509361A 1960-12-19 1961-12-15 Improved helicoidal fan Expired GB981188A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR847328A FR1315717A (en) 1960-12-19 1960-12-19 Advanced axial fan

Publications (1)

Publication Number Publication Date
GB981188A true GB981188A (en) 1965-01-20

Family

ID=8745030

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4509361A Expired GB981188A (en) 1960-12-19 1961-12-15 Improved helicoidal fan

Country Status (5)

Country Link
BE (1) BE611417A (en)
CH (1) CH378456A (en)
FR (1) FR1315717A (en)
GB (1) GB981188A (en)
LU (1) LU40954A1 (en)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2128687A (en) * 1982-10-13 1984-05-02 Rolls Royce Rotor or stator blade for an axial flow compressor
US4732532A (en) * 1979-06-16 1988-03-22 Rolls-Royce Plc Arrangement for minimizing buzz saw noise in bladed rotors
WO1995013472A1 (en) * 1993-11-12 1995-05-18 Penn Ventilator Co. Inc. Air moving system with optimized air foil fan blades
GB2344619A (en) * 1998-10-08 2000-06-14 Gate Spa Air duct for an electric fan
EP1707485A1 (en) * 2004-01-20 2006-10-04 Obschestvo s Ogranichennoi Otvetstvennostyu Midera-k Propeller
GB2426792A (en) * 2005-04-01 2006-12-06 David Richard Hopkins Fan with conical hub
EP1735568A2 (en) * 2004-03-15 2006-12-27 Airius, LLC Columnar air moving devices, systems and methods
US8616842B2 (en) 2009-03-30 2013-12-31 Airius Ip Holdings, Llc Columnar air moving devices, systems and method
CN104454639A (en) * 2014-11-28 2015-03-25 南阳防爆集团股份有限公司 Novel generator rotor axial fan
USD746971S1 (en) 2012-05-15 2016-01-05 Airius Ip Holdings, Llc Air moving device
US9631627B2 (en) 2004-03-15 2017-04-25 Airius Ip Holdings, Llc Columnar air moving devices, systems and methods
US9702576B2 (en) 2013-12-19 2017-07-11 Airius Ip Holdings, Llc Columnar air moving devices, systems and methods
US9970457B2 (en) 2008-05-30 2018-05-15 Airius Ip Holdings, Llc Columnar air moving devices, systems and methods
US10024531B2 (en) 2013-12-19 2018-07-17 Airius Ip Holdings, Llc Columnar air moving devices, systems and methods
US10221861B2 (en) 2014-06-06 2019-03-05 Airius Ip Holdings Llc Columnar air moving devices, systems and methods
US10487852B2 (en) 2016-06-24 2019-11-26 Airius Ip Holdings, Llc Air moving device
USD885550S1 (en) 2017-07-31 2020-05-26 Airius Ip Holdings, Llc Air moving device
USD886275S1 (en) 2017-01-26 2020-06-02 Airius Ip Holdings, Llc Air moving device
USD887541S1 (en) 2019-03-21 2020-06-16 Airius Ip Holdings, Llc Air moving device
US11598539B2 (en) 2019-04-17 2023-03-07 Airius Ip Holdings, Llc Air moving device with bypass intake

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69209484T3 (en) * 1992-01-30 1999-04-01 Spal S.R.L., Correggio, Reggio Emilia Fan with convex blades

Cited By (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4732532A (en) * 1979-06-16 1988-03-22 Rolls-Royce Plc Arrangement for minimizing buzz saw noise in bladed rotors
GB2128687A (en) * 1982-10-13 1984-05-02 Rolls Royce Rotor or stator blade for an axial flow compressor
US4671738A (en) * 1982-10-13 1987-06-09 Rolls-Royce Plc Rotor or stator blades for an axial flow compressor
WO1995013472A1 (en) * 1993-11-12 1995-05-18 Penn Ventilator Co. Inc. Air moving system with optimized air foil fan blades
GB2344619A (en) * 1998-10-08 2000-06-14 Gate Spa Air duct for an electric fan
GB2344619B (en) * 1998-10-08 2003-02-12 Gate Spa Air duct and electric fan
EP1707485A4 (en) * 2004-01-20 2007-10-03 Obschestvo S Ogranichennoi Otv Propeller
EP1707485A1 (en) * 2004-01-20 2006-10-04 Obschestvo s Ogranichennoi Otvetstvennostyu Midera-k Propeller
US12085084B2 (en) 2004-03-15 2024-09-10 Airius Ip Holdings, Llc Temperature destratification systems
US11703062B2 (en) 2004-03-15 2023-07-18 Airius Ip Holdings, Llc Temperature destratification systems
US10487840B2 (en) 2004-03-15 2019-11-26 Airius Ip Holdings, Llc Temperature destratification systems
EP1735568A4 (en) * 2004-03-15 2009-06-03 Airius Llc Columnar air moving devices, systems and methods
AU2005227197B2 (en) * 2004-03-15 2011-09-08 Airius Ip Holdings, Llc Columnar air moving devices, systems and methods
EP2503254A1 (en) * 2004-03-15 2012-09-26 Airius IP Holdings, LLC Columnar air moving devices, systems and methods
EP1735568A2 (en) * 2004-03-15 2006-12-27 Airius, LLC Columnar air moving devices, systems and methods
US11053948B2 (en) 2004-03-15 2021-07-06 Airius Ip Holdings, Llc Temperature destratification systems
US9714663B1 (en) 2004-03-15 2017-07-25 Airius Ip Holdings, Llc Temperature destratification systems
US9631627B2 (en) 2004-03-15 2017-04-25 Airius Ip Holdings, Llc Columnar air moving devices, systems and methods
US11365743B2 (en) 2004-03-15 2022-06-21 Airius Ip Holdings, Llc Temperature destratification systems
GB2426792A (en) * 2005-04-01 2006-12-06 David Richard Hopkins Fan with conical hub
GB2426792B (en) * 2005-04-01 2007-06-27 David Richard Hopkins A design to increase and smoothly improve the throughput of fluid (air or gas) through the inlet fan (or fans) of an aero-engine system
US9970457B2 (en) 2008-05-30 2018-05-15 Airius Ip Holdings, Llc Columnar air moving devices, systems and methods
US8616842B2 (en) 2009-03-30 2013-12-31 Airius Ip Holdings, Llc Columnar air moving devices, systems and method
US10184489B2 (en) 2011-06-15 2019-01-22 Airius Ip Holdings, Llc Columnar air moving devices, systems and methods
USD746971S1 (en) 2012-05-15 2016-01-05 Airius Ip Holdings, Llc Air moving device
USD926963S1 (en) 2012-05-15 2021-08-03 Airius Ip Holdings, Llc Air moving device
US10655841B2 (en) 2013-12-19 2020-05-19 Airius Ip Holdings, Llc Columnar air moving devices, systems and methods
US10641506B2 (en) 2013-12-19 2020-05-05 Airius Ip Holdings, Llc Columnar air moving devices, systems and methods
US10024531B2 (en) 2013-12-19 2018-07-17 Airius Ip Holdings, Llc Columnar air moving devices, systems and methods
US11092330B2 (en) 2013-12-19 2021-08-17 Airius Ip Holdings, Llc Columnar air moving devices, systems and methods
US9702576B2 (en) 2013-12-19 2017-07-11 Airius Ip Holdings, Llc Columnar air moving devices, systems and methods
US11221153B2 (en) 2013-12-19 2022-01-11 Airius Ip Holdings, Llc Columnar air moving devices, systems and methods
US11236766B2 (en) 2014-06-06 2022-02-01 Airius Ip Holdings Llc Columnar air moving devices, systems and methods
US11713773B2 (en) 2014-06-06 2023-08-01 Airius Ip Holdings, Llc Columnar air moving devices, systems and methods
US10221861B2 (en) 2014-06-06 2019-03-05 Airius Ip Holdings Llc Columnar air moving devices, systems and methods
US10724542B2 (en) 2014-06-06 2020-07-28 Airius Ip Holdings, Llc Columnar air moving devices, systems and methods
CN104454639A (en) * 2014-11-28 2015-03-25 南阳防爆集团股份有限公司 Novel generator rotor axial fan
US11421710B2 (en) 2016-06-24 2022-08-23 Airius Ip Holdings, Llc Air moving device
US11105341B2 (en) 2016-06-24 2021-08-31 Airius Ip Holdings, Llc Air moving device
US10487852B2 (en) 2016-06-24 2019-11-26 Airius Ip Holdings, Llc Air moving device
USD886275S1 (en) 2017-01-26 2020-06-02 Airius Ip Holdings, Llc Air moving device
USD885550S1 (en) 2017-07-31 2020-05-26 Airius Ip Holdings, Llc Air moving device
USD887541S1 (en) 2019-03-21 2020-06-16 Airius Ip Holdings, Llc Air moving device
US11598539B2 (en) 2019-04-17 2023-03-07 Airius Ip Holdings, Llc Air moving device with bypass intake
US11781761B1 (en) 2019-04-17 2023-10-10 Airius Ip Holdings, Llc Air moving device with bypass intake

Also Published As

Publication number Publication date
FR1315717A (en) 1963-01-25
LU40954A1 (en) 1962-02-14
BE611417A (en) 1962-06-12
CH378456A (en) 1964-06-15

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