GB952785A - Improvements in and relating to attaching fan blades to hubs - Google Patents

Improvements in and relating to attaching fan blades to hubs

Info

Publication number
GB952785A
GB952785A GB4383761A GB4383761A GB952785A GB 952785 A GB952785 A GB 952785A GB 4383761 A GB4383761 A GB 4383761A GB 4383761 A GB4383761 A GB 4383761A GB 952785 A GB952785 A GB 952785A
Authority
GB
United Kingdom
Prior art keywords
flange
ring
aperture
stub
blade
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
GB4383761A
Inventor
Terence Walshaw
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.)
AEREX Ltd
Original Assignee
AEREX 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 AEREX Ltd filed Critical AEREX Ltd
Priority to GB4383761A priority Critical patent/GB952785A/en
Publication of GB952785A publication Critical patent/GB952785A/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

Abstract

952,785. Axial-flow fans. AEREX Ltd. Nov. 15, 1962 [Dec. 7, 1961], No. 43837/61. Heading F1C. In a fan blade with an integral root stub having a terminal flange, and a clamping ring which bears axially, with respect to the fan blade axis, against the root stub flange, the flange and the clamping ring aperture are so shaped and dimensioned that by relative tilting and turning, with their axes inclined, the flange can be passed through the aperture but is axially opposed to the bearing surface of the clamping ring when the ring is on the root stub and coaxial therewith for attachment to a fan hub. The fan blade 2, Fig. 1, has a root stub provided with a flange 4 in the periphery of which is arranged, inclined to the blade axis, a notch 8 of a depth substantially equal to the radial projection of the flange 4 from the root stub, and of a width slightly greater than the thickness of the flange 6 of a ring nut 3. The ring nut 3 is put over the flange 4 by presenting the root stub to the circular mouth 5 of the ring nut 3 in an inclined position, with the notch 8 straddling the flange 6, and then turning the ring nut 3 until it has passed over the flange 4. The ring nut 3 is then screwed to a stub shaft 1 which projects radially from the fan hub (not shown) and which is rotatable to vary the pitch of the blade 2. A locking-nut 7 is provided. In an alternative embodiment, Fig. 6, the ring nut 3 is replaced by a clamping ring 9 which is secured.to a flange 10 on the stub shaft 1 by at least three bolts 11. Alternatively, the flange 4 may be boat-shaped with a maximum width slightly less and a length substantially greater than the diameter of the circular aperture of the clamping ring, one end of the boat-shaped flange being substantially full-width, to be passed first diametrally on the slant through the aperture, and the other end having a curved taper, from the sides and beneath, so that it can follow through the aperture as the blade is brought into a position axially parallel with the clamping ring axis. The aperture in the ring may instead be notched or otherwise shaped to enable it to be passed over a complete circular flange on the blade root stub.
GB4383761A 1961-12-07 1961-12-07 Improvements in and relating to attaching fan blades to hubs Expired GB952785A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4383761A GB952785A (en) 1961-12-07 1961-12-07 Improvements in and relating to attaching fan blades to hubs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4383761A GB952785A (en) 1961-12-07 1961-12-07 Improvements in and relating to attaching fan blades to hubs

Publications (1)

Publication Number Publication Date
GB952785A true GB952785A (en) 1964-03-18

Family

ID=10430525

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4383761A Expired GB952785A (en) 1961-12-07 1961-12-07 Improvements in and relating to attaching fan blades to hubs

Country Status (1)

Country Link
GB (1) GB952785A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4012171A (en) * 1974-04-24 1977-03-15 Suvak Michael N Blade and mounting means
EP0153529A2 (en) * 1983-10-07 1985-09-04 Nordisk Ventilator Co. A/S A blade with a blade shaft for an impeller of an axial flow fan

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4012171A (en) * 1974-04-24 1977-03-15 Suvak Michael N Blade and mounting means
EP0153529A2 (en) * 1983-10-07 1985-09-04 Nordisk Ventilator Co. A/S A blade with a blade shaft for an impeller of an axial flow fan
EP0153529A3 (en) * 1983-10-07 1986-11-12 Nordisk Ventilator Co. A/S A blade with a blade shaft for an impeller of an axial flow fan

Similar Documents

Publication Publication Date Title
GB1219994A (en) Turbine for a compressible medium
GB1293553A (en) Radial flow fans
FR2293578B3 (en)
GB1019158A (en) Improvements in or relating to axial-flow compressor,blower or fan with reduced noisiness
GB1140817A (en) Fan apparatus having adjustable pitch fan blades
GB952785A (en) Improvements in and relating to attaching fan blades to hubs
GB1392182A (en) Assembly for securing a member on a shaft
GB903792A (en) Blade and blade mounting assemblies for axial flow turbines, compressors or pumps
GB623710A (en) Improvements in hubs for screw fans
GB1171961A (en) Improvements in or relating to Centrifugal Fans
GB1296791A (en)
GB1502002A (en) Impeller for axial-flow fans
GB814564A (en) Improvements in or relating to blade wheels for centrifugal fans
GB992266A (en) Axial-flow blower
GB991744A (en) Improvements in or relating to propellers
GB1271782A (en) Improvements in or relating to fans
GB1431510A (en) Vane with an axle pin for axial flow fan impeller wheels
GB796696A (en) Improvements in or relating to centrifugal fans
GB1085390A (en) A rotor or stator for axial flow machines, particularly for extractors and blowers
ES469687A1 (en) Axial fan
GB975892A (en) Turbine rotors
GB601160A (en) Improvements in or relating to propellers, fans and the like
GB853331A (en) Impeller for pumps, blowers or the like
GB872017A (en) Improvements in or relating to adjustable pitch axial flow rotors and blades therefor
GB716389A (en) Improvements in axial flow impellers and rotors in blowers and like flow-machines and in turbines