GB940922A - Improvements in or relating to fans - Google Patents

Improvements in or relating to fans

Info

Publication number
GB940922A
GB940922A GB26331/61A GB2633161A GB940922A GB 940922 A GB940922 A GB 940922A GB 26331/61 A GB26331/61 A GB 26331/61A GB 2633161 A GB2633161 A GB 2633161A GB 940922 A GB940922 A GB 940922A
Authority
GB
United Kingdom
Prior art keywords
deflector
impeller
dust
gas
fan casing
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
GB26331/61A
Inventor
Thomas Bosanko Collins
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.)
Davidson and Co Ltd
Original Assignee
Davidson and Co 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 Davidson and Co Ltd filed Critical Davidson and Co Ltd
Priority to GB26331/61A priority Critical patent/GB940922A/en
Publication of GB940922A publication Critical patent/GB940922A/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
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
    • 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
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
    • F04D29/444—Bladed diffusers
    • 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
    • F05D2250/00—Geometry
    • F05D2250/50—Inlet or outlet
    • F05D2250/51—Inlet

Abstract

940,922. Centrifugal separators. DAVIDSON & CO. Ltd. June 14, 1962 [July 20, 1961], No. 26331/61. Heading B2P. [Also in Division F1] In a rotary fan, particularly an exhauster fan, having an impeller disposed within a fan casing with a suction eye, for the inlet of dustladen air or gas to the fan casing, disposed in axial alignment with the impeller, the suction eye has the form of a duct or tube containing fixed deflector vanes which impart swirl to the incoming dust-laden air or gas and, located adjacent the junction of the tubular suction eye with the fan casing, there is an annular deflector having a section which provides one flange directed into the tubular suction eye and another flange directed radially outwardly into the fan casing, which flanges are spaced from the walls of the fan casing and of the tubular suction eye. In order to reduce abrasion of impeller blades 1 by dust in the air or gas being pumped, the inlet duct 4 has arranged therein a series of fixed vanes 5 which impart swirl to the incoming dust-laden air or gas. This causes a major portion of the dust to be thrown centrifugally on to inner wall surface 10 leaving relatively dust-free air or gas which passes to the impeller 1, the dust subsequently passing through an annular passage 11, formed between a flange 9 of an annular deflector 8 and the surface 10 and being directed by a flange 12 radially outwardly to by-pass the impeller 1 and pass into the fan casing 3 provided with outlet 7. The deflector 8, which may be of a surface-hardened material, is secured to the casing 3 with spacers 14 by bolts 15 screwed into projections 13 extending substantially tangentially, in the direction of rotation, from the flange 12. The deflector 8 may instead be secured to the tubular suction eye 4. The crosssection of the deflector 8 may be substantially arcuate. In an alternative embodiment (not shown) the projections 13 are omitted and the deflector is secured directly to the impeller and rotates therewith.
GB26331/61A 1961-07-20 1961-07-20 Improvements in or relating to fans Expired GB940922A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB26331/61A GB940922A (en) 1961-07-20 1961-07-20 Improvements in or relating to fans

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB26331/61A GB940922A (en) 1961-07-20 1961-07-20 Improvements in or relating to fans

Publications (1)

Publication Number Publication Date
GB940922A true GB940922A (en) 1963-11-06

Family

ID=10241993

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26331/61A Expired GB940922A (en) 1961-07-20 1961-07-20 Improvements in or relating to fans

Country Status (1)

Country Link
GB (1) GB940922A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7083379B2 (en) 2003-04-30 2006-08-01 Holset Engineering Company, Limited Compressor
US7686586B2 (en) 2004-02-21 2010-03-30 Holset Engineering Company, Limited Compressor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7083379B2 (en) 2003-04-30 2006-08-01 Holset Engineering Company, Limited Compressor
US7686586B2 (en) 2004-02-21 2010-03-30 Holset Engineering Company, Limited Compressor

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