GB999038A - Axial flow fan with adjustable blades - Google Patents

Axial flow fan with adjustable blades

Info

Publication number
GB999038A
GB999038A GB28192/64A GB2819264A GB999038A GB 999038 A GB999038 A GB 999038A GB 28192/64 A GB28192/64 A GB 28192/64A GB 2819264 A GB2819264 A GB 2819264A GB 999038 A GB999038 A GB 999038A
Authority
GB
United Kingdom
Prior art keywords
hub
impeller
dust
gap
blades
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
GB28192/64A
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.)
Svenska Flaktfabriken AB
Original Assignee
Svenska Flaktfabriken AB
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 Svenska Flaktfabriken AB filed Critical Svenska Flaktfabriken AB
Publication of GB999038A publication Critical patent/GB999038A/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
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/34—Blade mountings
    • F04D29/36—Blade mountings adjustable
    • F04D29/362—Blade mountings adjustable during rotation

Landscapes

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

Abstract

999,038. Axial-flow fans. SVENSKA FLAKTFABRIKEN A.B. July 8, 1964 [July 12, 1963], No. 28192/64. Heading F1C. In an axial-flow fan for dust-laden gases, comprising adjustable impeller blades adjusted by an axially-displaceable device projecting into the impeller hub and enclosed in a stationary central body mounted at the outlet side of the hub and having a diameter corresponding to the hub diameter, air under pressure is supplied to prevent the entry of dust-laden gas through the gap between the central body and the hub. Each impeller blade 4 is journalled in bearings 8 in the impeller hub 2 and provided with a crank 9 having a roller 10 engaging a groove 11 on a disc 12 which can be moved axially by means of a control shaft 13 to adjust the pitch of the blades. The control means (not shown) connected to the control shaft 13 is enclosed in a stationary central casing 14 disposed at the outlet side of the impeller and having a diameter corresponding to that of the hub 2. The front wall 14a of the central casing 14 is provided with an annular chamber 15 provided with seal rings 18a, 18b engaging a flange 19 on a cover disc 20 for the hub 2. Air under pressure is supplied through a pipe 16 to the chamber 15, from which air leaking around the seal ring 18a passes outwardly through the gap 23 between the hub 2 and the central casing 14 to prevent the dust-laden gas conveyed by the fan from passing inwardly through the gap and depositing dust on the pitch control means. The blades 4 and bearings 8 are kept clean by supplying air through ducts 24, 25 to the annular gap 26 around the base plate 6 of each blade.
GB28192/64A 1963-07-12 1964-07-08 Axial flow fan with adjustable blades Expired GB999038A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE776163 1963-07-12

Publications (1)

Publication Number Publication Date
GB999038A true GB999038A (en) 1965-07-21

Family

ID=20272234

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28192/64A Expired GB999038A (en) 1963-07-12 1964-07-08 Axial flow fan with adjustable blades

Country Status (5)

Country Link
US (1) US3231313A (en)
AT (1) AT243424B (en)
CH (1) CH401336A (en)
ES (1) ES301940A1 (en)
GB (1) GB999038A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4042079A (en) * 1975-05-30 1977-08-16 All American Industries, Inc. Variable energy absorber for aircraft arresting system
CN107781216A (en) * 2016-08-29 2018-03-09 长城汽车股份有限公司 Flabellum adjusting means

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO117189B (en) * 1965-10-28 1969-07-14 Svenska Flaektfabriken Ab
US3935625A (en) * 1971-03-30 1976-02-03 Aktiebolaget Svenska Flaktfabriken Method of manufacturing axial fans of different sizes
SE355646B (en) * 1971-03-30 1973-04-30 Svenska Flaektfabriken Ab
SE433108B (en) * 1977-05-17 1984-05-07 Flaekt Ab AXIAL SPOT WITH A SPEED WHEEL WITH ADJUSTABLE SHOOTERS
DE3424139C2 (en) * 1984-06-30 1996-02-22 Bbc Brown Boveri & Cie Gas turbine rotor
GB8800932D0 (en) * 1988-01-15 1988-02-17 Dowty Rotol Ltd Propeller blade assembly
CN112360747B (en) * 2020-11-12 2022-07-01 石家庄石一泵业有限公司 Centrifugal pump with adjustable online lift

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3029011A (en) * 1955-10-13 1962-04-10 Bristol Siddeley Engines Ltd Rotary compressors or turbines
US3101890A (en) * 1961-05-29 1963-08-27 Westinghouse Electric Corp Fans having radial flow rotors in axial flow casings
US3139310A (en) * 1961-12-29 1964-06-30 Svenska Flaektfabriken Ab Arrangement in axial fans for the transport of dust commingled gases

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4042079A (en) * 1975-05-30 1977-08-16 All American Industries, Inc. Variable energy absorber for aircraft arresting system
CN107781216A (en) * 2016-08-29 2018-03-09 长城汽车股份有限公司 Flabellum adjusting means

Also Published As

Publication number Publication date
US3231313A (en) 1966-01-25
CH401336A (en) 1965-10-31
ES301940A1 (en) 1965-01-16
AT243424B (en) 1965-11-10

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