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GB1293553A - Radial flow fans - Google Patents

Radial flow fans

Info

Publication number
GB1293553A
GB1293553A GB861769A GB861769A GB1293553A GB 1293553 A GB1293553 A GB 1293553A GB 861769 A GB861769 A GB 861769A GB 861769 A GB861769 A GB 861769A GB 1293553 A GB1293553 A GB 1293553A
Authority
GB
United Kingdom
Prior art keywords
blade
neighbouring
blades
angular
angular spacing
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
GB861769A
Inventor
Michael Frederick Russell
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.)
CAV Ltd
Original Assignee
CAV Ltd
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 CAV Ltd filed Critical CAV Ltd
Priority to GB861769A priority Critical patent/GB1293553A/en
Priority to FR7005548A priority patent/FR2035512A5/fr
Priority to DE19707005689 priority patent/DE7005689U/en
Priority to DE19702007321 priority patent/DE2007321A1/en
Publication of GB1293553A publication Critical patent/GB1293553A/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
    • F04D29/26—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
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes

Landscapes

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

Abstract

1293553 Centrifugal fans CAV Ltd 3 Feb 1970 [18 Feb 1969] 8617/69 Heading F1C A radial-flow fan comprises a disc 12 located at the end of a boss 10 and extending radially relative to the axis of rotation, and a plurality of blades 13 secured to the disc and extending axially therefrom, the angular spacing between any one blade and one of its neighbouring blades being different from the angular spacing between the blade and its other neighbouring blade and also different from the angular spacing between the one neighbouring blade and the next blade on the opposite side of the one neighbouring blade from the one blade, whereby noise is reduced. The angular positions of the blades may have the random values (in degrees) indicated. Dynamic balancing can be effected by varying the blade thickness in accordance with the angular position of the blade.
GB861769A 1969-02-18 1969-02-18 Radial flow fans Expired GB1293553A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB861769A GB1293553A (en) 1969-02-18 1969-02-18 Radial flow fans
FR7005548A FR2035512A5 (en) 1969-02-18 1970-02-17
DE19707005689 DE7005689U (en) 1969-02-18 1970-02-18 FAN.
DE19702007321 DE2007321A1 (en) 1969-02-18 1970-02-18 fan

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB861769A GB1293553A (en) 1969-02-18 1969-02-18 Radial flow fans

Publications (1)

Publication Number Publication Date
GB1293553A true GB1293553A (en) 1972-10-18

Family

ID=9855929

Family Applications (1)

Application Number Title Priority Date Filing Date
GB861769A Expired GB1293553A (en) 1969-02-18 1969-02-18 Radial flow fans

Country Status (3)

Country Link
DE (2) DE2007321A1 (en)
FR (1) FR2035512A5 (en)
GB (1) GB1293553A (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4253800A (en) * 1978-08-12 1981-03-03 Hitachi, Ltd. Wheel or rotor with a plurality of blades
US4355954A (en) * 1980-07-18 1982-10-26 The Maytag Company Pump impeller
US4538963A (en) * 1983-07-08 1985-09-03 Matsushita Electric Industrial Co., Ltd. Impeller for cross-flow fan
GB2225814A (en) * 1988-12-06 1990-06-13 Johnston Eng Ltd Improvements in road sweeping vehicles
US5000660A (en) * 1989-08-11 1991-03-19 Airflow Research And Manufacturing Corporation Variable skew fan
US5026251A (en) * 1988-07-14 1991-06-25 Asmo Co., Ltd. Compact fan unit for automobile
US6042338A (en) * 1998-04-08 2000-03-28 Alliedsignal Inc. Detuned fan blade apparatus and method
EP1249615A2 (en) * 2001-04-12 2002-10-16 Robert Bosch Gmbh Blower rotor
US6471482B2 (en) * 2000-11-30 2002-10-29 United Technologies Corporation Frequency-mistuned light-weight turbomachinery blade rows for increased flutter stability
EP1253325A2 (en) * 2001-04-27 2002-10-30 Black & Decker Inc. Radial flow impeller
WO2002090776A2 (en) * 2001-05-09 2002-11-14 Mtu Friedrichshafen Gmbh Rotor disk
EP1872646A1 (en) * 2006-06-30 2008-01-02 CNH Belgium N.V. Rotating inlet for cross flow fan.
DE102008010912A1 (en) 2007-02-23 2008-08-28 Sew-Eurodrive Gmbh & Co. Kg Fan wheel, system and transmission series
DE102007009366A1 (en) * 2007-02-23 2008-08-28 Sew-Eurodrive Gmbh & Co. Kg Fan wheel, system and transmission series
EP2696078A1 (en) * 2012-08-09 2014-02-12 MTU Aero Engines GmbH Bladed rotor for a turbomachine and corresponding assembly method
US20140147252A1 (en) * 2011-07-07 2014-05-29 Makita Corporation Power tool
EP3623638A4 (en) * 2017-06-19 2021-02-17 Daikin Industries, Ltd. Propeller fan

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3708336C2 (en) * 1987-03-14 1996-02-15 Bosch Gmbh Robert Impeller for conveying a medium
GB8921806D0 (en) * 1989-09-27 1989-11-08 Lucas Ind Plc An electrical rotary machine and a centrifugal fan for use in an electrical rotary machine
CN106194831B (en) * 2016-09-14 2019-05-07 珠海格力电器股份有限公司 Fan blade assembly and fan

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4253800A (en) * 1978-08-12 1981-03-03 Hitachi, Ltd. Wheel or rotor with a plurality of blades
US4355954A (en) * 1980-07-18 1982-10-26 The Maytag Company Pump impeller
US4538963A (en) * 1983-07-08 1985-09-03 Matsushita Electric Industrial Co., Ltd. Impeller for cross-flow fan
US5026251A (en) * 1988-07-14 1991-06-25 Asmo Co., Ltd. Compact fan unit for automobile
GB2225814A (en) * 1988-12-06 1990-06-13 Johnston Eng Ltd Improvements in road sweeping vehicles
US5044887A (en) * 1988-12-06 1991-09-03 Johnston Engineering Limited Blower fan impellers
GB2225814B (en) * 1988-12-06 1993-03-24 Johnston Eng Ltd Fan impellers for road sweeping vehicles
US5000660A (en) * 1989-08-11 1991-03-19 Airflow Research And Manufacturing Corporation Variable skew fan
US6042338A (en) * 1998-04-08 2000-03-28 Alliedsignal Inc. Detuned fan blade apparatus and method
US6471482B2 (en) * 2000-11-30 2002-10-29 United Technologies Corporation Frequency-mistuned light-weight turbomachinery blade rows for increased flutter stability
EP1249615A3 (en) * 2001-04-12 2003-10-08 Robert Bosch Gmbh Blower rotor
EP1249615A2 (en) * 2001-04-12 2002-10-16 Robert Bosch Gmbh Blower rotor
EP1253325A2 (en) * 2001-04-27 2002-10-30 Black & Decker Inc. Radial flow impeller
EP1253325A3 (en) * 2001-04-27 2003-10-29 Black & Decker Inc. Radial flow impeller
EP1662148A2 (en) * 2001-04-27 2006-05-31 Black & Decker, Inc. Radial flow impeller
EP1662148A3 (en) * 2001-04-27 2013-07-17 Black & Decker, Inc. Radial flow impeller
WO2002090776A2 (en) * 2001-05-09 2002-11-14 Mtu Friedrichshafen Gmbh Rotor disk
WO2002090776A3 (en) * 2001-05-09 2003-02-27 Mtu Friedrichshafen Gmbh Rotor disk
EP1872646A1 (en) * 2006-06-30 2008-01-02 CNH Belgium N.V. Rotating inlet for cross flow fan.
DE102007009366A1 (en) * 2007-02-23 2008-08-28 Sew-Eurodrive Gmbh & Co. Kg Fan wheel, system and transmission series
DE102008010912A1 (en) 2007-02-23 2008-08-28 Sew-Eurodrive Gmbh & Co. Kg Fan wheel, system and transmission series
DE102007009366B4 (en) * 2007-02-23 2017-06-14 Sew-Eurodrive Gmbh & Co Kg Fan wheel, system and transmission series
DE102008010912B4 (en) * 2007-02-23 2020-11-12 Sew-Eurodrive Gmbh & Co Kg Fan wheel, system and gear series
US20140147252A1 (en) * 2011-07-07 2014-05-29 Makita Corporation Power tool
US9850915B2 (en) * 2011-07-07 2017-12-26 Makita Corporation Power tool
EP2696078A1 (en) * 2012-08-09 2014-02-12 MTU Aero Engines GmbH Bladed rotor for a turbomachine and corresponding assembly method
US9605541B2 (en) 2012-08-09 2017-03-28 MTU Aero Engines AG Bladed rotor for a turbomachine
EP3623638A4 (en) * 2017-06-19 2021-02-17 Daikin Industries, Ltd. Propeller fan

Also Published As

Publication number Publication date
FR2035512A5 (en) 1970-12-18
DE2007321A1 (en) 1970-09-03
DE7005689U (en) 1972-11-23

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years