WO1997039244A1 - Appareil rotatif a pales - Google Patents

Appareil rotatif a pales Download PDF

Info

Publication number
WO1997039244A1
WO1997039244A1 PCT/GB1997/001060 GB9701060W WO9739244A1 WO 1997039244 A1 WO1997039244 A1 WO 1997039244A1 GB 9701060 W GB9701060 W GB 9701060W WO 9739244 A1 WO9739244 A1 WO 9739244A1
Authority
WO
WIPO (PCT)
Prior art keywords
vanes
casing
fluid
less
leading edges
Prior art date
Application number
PCT/GB1997/001060
Other languages
English (en)
Inventor
Arthur John Arnold
Adrian Christopher Arnold
Original Assignee
Arthur John Arnold
Adrian Christopher Arnold
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 Arthur John Arnold, Adrian Christopher Arnold filed Critical Arthur John Arnold
Priority to JP9536876A priority Critical patent/JP2000508735A/ja
Publication of WO1997039244A1 publication Critical patent/WO1997039244A1/fr

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
    • F04D19/00—Axial-flow pumps
    • F04D19/002—Axial flow fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0646—Units comprising pumps and their driving means the pump being electrically driven the hollow pump or motor shaft being the conduit for the working fluid
    • 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
    • F04D29/18—Rotors
    • F04D29/181—Axial flow rotors
    • 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
    • F04D29/18—Rotors
    • F04D29/186—Shaftless rotors
    • 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
    • F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
    • F04D29/326—Rotors specially for elastic fluids for axial flow pumps for axial flow fans comprising a rotating shroud
    • 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

Definitions

  • This invention relates to varied rotary apparatus, that is, apparatus which may be used either tc create a rotary vortex in a ducted fluid stream by passage of the stream over an array of stationary vanes, to accelerate a fluid by rotation of ar. array of rotary vanes in the fluid, preferably in a duct, cylinder or other chamber to induce axial movement of the fluid therethrough or to compress the fluid therein downstream of the vanes, or to induce rotational movement in an array of vanes by passage of a fluid under pressure through the array.
  • Vanes for use in aach type of rotary apparatus are well known and generally comprise pitched blades which extend radially from a central core or hub which, in the case of rotary vanes, is rotatably mounted, generally axially in a chamber through which the fluid, which may be liquid or gaseous, passes.
  • the leading edge of the blades is generally linear and is disposed normal to the d rection of fluid flow.
  • the fluid contains suspended solids, especially of a filamentary, fibrous or reticular nature, the solids tend to become trapped on, over or around the blades and this may cause a loss in efficiency or smoothness of operation, or total failure of the machine pending removal of the offending material.
  • vaned rotary apparatus (as hereinbefore defined) comprises an external casing through which, in use, fluid is constrained to pass, mounted to which are a plurality of inwardly-extending vanes, in which the vanes comprise independent pitched elements which are supported only where they are mounted to the casing.
  • leading edges of the vanes are preferably curved to facilitate the movement of especially filamentary or woven materials caught around the leading edges towards the central region of the array and a central gap may be provided between the vanes to facilitate removal of such material from the vanes.
  • he leading edges are also preferably angled in a downstream direction from the wall of the casing towards the centre thereof, again to facilitate removal of materials caught around the leading edge of the vanes.
  • the vanes comprise generally elliptical plane elements, the maximum width (normal to the major axis) being the radius of the casing or slightly less thereof, the roots of which are set in the wall of the casing at an angle to provide the pitch and also to provide the downstream-sloping direction of the leading edges.
  • vanes A minimum of two vanes are required in apparatus according to the invention; the maximum number is d ependent on opercitional or functional requirements but in most applications four or five vanes would be sufficient, although up to eight vanes may exceptionally be used.
  • the vanes may be axially spaced apart such that corresponding parts of the vanes are not in the same lateral plane.
  • the leading edge of the most upstream vane is thus axially spaced apart from the leading edge of the next downstream vane and, for optimum entrapment-resistance, the vanes may be spaced such that the leading edge of the next downstream vane is axially spaced from the trailing edge of the vane immediately upstream.
  • the pitch angle of the vanes may be reduced; that is, the vanes may have a shallower angle to a lateral plane than is the case with apparatus where the vanes are co-planar.
  • Apparatus according to the invention may find application in a stationary embodiment in for example suction cleaners which operate by creation of a vortex in dirt- laden air whereby the dirt particulates are subject to centrifugal forces and are precipitated into a collection chamber as they lose energy.
  • the casing may be rotationally mounted and driven to create a moving airflow through the casing.
  • the casing may be rotationally driven by passing a moving airflow through the casing and over the vanes.
  • Figure 1 is an axial view showing apparatus having three vanes, suitable for use in a suction or vacuum cleaner;
  • Figure 2 is a perspective view of the apparatus of Figure 1;
  • Figure 3 is an ⁇ txial view of apparatus having three axially spaced vanes.
  • Figure 4 is a side view of the apparatus of Figure 3.
  • the apparatus includes an annular housing 11 suitable for incorporation in a vacuum cleaner or other machine which requires the generation of a vortical airflow.
  • Three vanes 12 extend from the wall of the housing into the lumen of the duct thereby defined.
  • Each vane is formed from a planar sheet material and has a generally elliptical or eyelid shape. The vanes are mounted at an angle so that the leading edges 13 partially overlap the trailing edges 14.
  • a small triangular aperture 15 is defined at the centre; none of the vanes makes physical contact with the others.
  • an axial aperture 16 is defined between the leading edge 13 of any one vane and the trailing edge 14 of the adjacent vane.
  • the lines 17 show the angled mounting position of the roots of the vanes in the wall of the housing.
  • FIG. 3 and 4 an arrangement of axially spaced apart vanes is viewed respectively axially and from the side.
  • the most upstream vane is labelled 31 with the leading edge root labelled 32; the next downstream is labelled 33 with the leading edge rot thereof labelled 34 and the most downstream vane is labelled 35 with the leading edge root thereof labelled 36.
  • the vanes are axially spaced apart, the spacing between the respective leading edges 34 and 36 and the trailing edges of the vane next upstream being equivalent to the longitudinal pitch of the vanes.
  • a pitch angle of less than 45° is preferred in most applications; a pitch angle of 30° may for example be used with apparatus having three vanes or 20° with apparatus having four vanes, or with apparatus having axially spaced-apart vanes as shown by way of example in Figures 3 and 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention porte sur un appareil rotatif à pales fixe ou mobile en rotation. Ledit appareil qui comporte une enveloppe extérieure (11) à travers laquelle un fluide est contraint de passer, se caractérise par une série de pales (12) fixée à l'enveloppe (11), s'étendant vers l'intérieur, munies d'éléments de pas indépendant, et n'étant soutenues que par leur point de fixation sur l'enveloppe. Tout corps solide entraîné dans l'écoulement du fluide peut ainsi traverser sensiblement librement et sans entraves l'appareil sans être retenu par les vannes (12). Les pales (12) peuvent par ailleurs être séparées axialement.
PCT/GB1997/001060 1996-04-16 1997-04-16 Appareil rotatif a pales WO1997039244A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9536876A JP2000508735A (ja) 1996-04-16 1997-04-16 羽根付き回転装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9607842.3A GB9607842D0 (en) 1996-04-16 1996-04-16 Vaned rotary apparatus
GB9607842.3 1996-04-16

Publications (1)

Publication Number Publication Date
WO1997039244A1 true WO1997039244A1 (fr) 1997-10-23

Family

ID=10792130

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1997/001060 WO1997039244A1 (fr) 1996-04-16 1997-04-16 Appareil rotatif a pales

Country Status (4)

Country Link
JP (1) JP2000508735A (fr)
CA (1) CA2252222A1 (fr)
GB (1) GB9607842D0 (fr)
WO (1) WO1997039244A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7065826B1 (en) 2003-01-21 2006-06-27 Euro Pro Operating, Llc Cyclonic bagless vacuum cleaner with slotted baffle
WO2006133606A1 (fr) * 2005-06-17 2006-12-21 Wisepoint Technology Co., Ltd. Propulseur a reaction
EP2383471A1 (fr) * 2010-04-28 2011-11-02 Castart B.V. Pompe à suspension
CN104179694A (zh) * 2014-08-29 2014-12-03 夏善胜 新型直流无阻泵

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2500400A (en) * 1946-10-25 1950-03-14 Byron A Cogswell Axial flow pump
FR1479553A (fr) * 1966-03-25 1967-05-05 Ferrodo Sa Franc De Hélice de ventilateur et ses applications, notamment aux aérothermes
FR1485021A (fr) * 1966-06-28 1967-06-16 Pompes à écoulement axial
FR2127607A5 (fr) * 1972-02-11 1972-10-13 Marine Systems Inc
US3719436A (en) * 1970-09-22 1973-03-06 Gorman Rupp Co Axial flow pump
US3972653A (en) * 1975-02-10 1976-08-03 Travis Larry G In-line pump device
BE901181A (fr) * 1984-11-30 1985-03-15 Bulatov Georges Helice de propulsion ou roue de pompe rotative.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2500400A (en) * 1946-10-25 1950-03-14 Byron A Cogswell Axial flow pump
FR1479553A (fr) * 1966-03-25 1967-05-05 Ferrodo Sa Franc De Hélice de ventilateur et ses applications, notamment aux aérothermes
FR1485021A (fr) * 1966-06-28 1967-06-16 Pompes à écoulement axial
US3719436A (en) * 1970-09-22 1973-03-06 Gorman Rupp Co Axial flow pump
FR2127607A5 (fr) * 1972-02-11 1972-10-13 Marine Systems Inc
US3972653A (en) * 1975-02-10 1976-08-03 Travis Larry G In-line pump device
BE901181A (fr) * 1984-11-30 1985-03-15 Bulatov Georges Helice de propulsion ou roue de pompe rotative.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7065826B1 (en) 2003-01-21 2006-06-27 Euro Pro Operating, Llc Cyclonic bagless vacuum cleaner with slotted baffle
WO2006133606A1 (fr) * 2005-06-17 2006-12-21 Wisepoint Technology Co., Ltd. Propulseur a reaction
EP2383471A1 (fr) * 2010-04-28 2011-11-02 Castart B.V. Pompe à suspension
CN104179694A (zh) * 2014-08-29 2014-12-03 夏善胜 新型直流无阻泵
CN104179694B (zh) * 2014-08-29 2016-02-17 夏善胜 直流无阻泵

Also Published As

Publication number Publication date
GB9607842D0 (en) 1996-06-19
CA2252222A1 (fr) 1997-10-23
JP2000508735A (ja) 2000-07-11

Similar Documents

Publication Publication Date Title
US4531890A (en) Centrifugal fan impeller
US6328527B1 (en) Prandtl layer turbine
WO2006011333A1 (fr) Soufflante
EP1228317A1 (fr) Ventilateur axial
EP0151169B1 (fr) Ventilateur axial
EP0053508B1 (fr) Dispositif séparateur fluide-particules
US4483659A (en) Axial flow impeller
KR950008863A (ko) 고지의 건식해섬방법 및 그 장치
WO2018003017A1 (fr) Soufflante électrique et aspirateur électrique
US6183641B1 (en) Prandtl layer turbine
WO1997039244A1 (fr) Appareil rotatif a pales
US6174127B1 (en) Prandtl layer turbine
JPH05202899A (ja) 非妨害ポンプ
US20040035093A1 (en) Vacuum cleaner
US6224325B1 (en) Prandtl layer turbine
JP4269092B2 (ja) 多翼遠心ファン
US6135708A (en) Prandtl layer turbine
US20230044023A1 (en) Vortex finder for a cyclonic separator
CA1198681A (fr) Roue a debit axial
US6261052B1 (en) Prandtl layer turbine
US6238177B1 (en) Prandtl layer turbine
KR100437035B1 (ko) 청소기용 원심송풍기
RU2428095C1 (ru) Турбинный узел щетки и пылесос, содержащий его
RU2220642C2 (ru) Циклон с пылесборником
JPH0474560B2 (fr)

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): CA GB JP PL US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
ENP Entry into the national phase

Ref document number: 2252222

Country of ref document: CA

Ref country code: CA

Ref document number: 2252222

Kind code of ref document: A

Format of ref document f/p: F

122 Ep: pct application non-entry in european phase