GB651569A - Improvements in hubs of screw fan impellers - Google Patents

Improvements in hubs of screw fan impellers

Info

Publication number
GB651569A
GB651569A GB3013849A GB3013849A GB651569A GB 651569 A GB651569 A GB 651569A GB 3013849 A GB3013849 A GB 3013849A GB 3013849 A GB3013849 A GB 3013849A GB 651569 A GB651569 A GB 651569A
Authority
GB
United Kingdom
Prior art keywords
screw
shaft
aerex
cup
replaced
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
GB3013849A
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 AUSTRALIA Co
Original Assignee
AEREX AUSTRALIA Co
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 AUSTRALIA Co filed Critical AEREX AUSTRALIA Co
Priority to GB3013849A priority Critical patent/GB651569A/en
Publication of GB651569A publication Critical patent/GB651569A/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

Landscapes

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

Abstract

651,569. Screw fans. AEREX, Ltd. (Aerex (Australia) Co.). Nov. 24, 1949, No. 30138. [Class 110(i)] A screw fan impeller hub comprises a number of rim segments a each formed with a socket b for the reception of the root c of a fan blade d and each connected to a central hub boss e. Each socketed segment can be cast integrally with its tubular spoke f. Each blade root c is screwed into a cup h-and secured by a set screw i. The cup h is carried by a shaft j having at its inner end a pinion o engaging a rack q. All the racks extend between two annular pistons r which are interconnected by a distance piece t. The cylindrical head p<SP>2</SP> of a screw p which is tapped into the end of each shaft has a sleeve roller v which engages slidably with a groove in the distance piece t. Pressure fluid is admitted to and discharged from an anular cylinder s by way of pipes w<SP>1</SP>, w<SP>2</SP> to move the pistons and so adjust the pitch of the blades d. Leakage is dealt with by packing washers x, y<SP>1</SP> and z and non-return flap valves r<SP>1</SP>. The spokes f may be replaced by annular disc. The racks may be replaced by a crown wheel, or alternatively each shaft j may carry a crank arm engaging an axially displaceable slotted block.
GB3013849A 1949-11-24 1949-11-24 Improvements in hubs of screw fan impellers Expired GB651569A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3013849A GB651569A (en) 1949-11-24 1949-11-24 Improvements in hubs of screw fan impellers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3013849A GB651569A (en) 1949-11-24 1949-11-24 Improvements in hubs of screw fan impellers

Publications (1)

Publication Number Publication Date
GB651569A true GB651569A (en) 1951-04-04

Family

ID=10302920

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3013849A Expired GB651569A (en) 1949-11-24 1949-11-24 Improvements in hubs of screw fan impellers

Country Status (1)

Country Link
GB (1) GB651569A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0153452A1 (en) * 1984-02-03 1985-09-04 Turbo-Lufttechnik GmbH Axial blower

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0153452A1 (en) * 1984-02-03 1985-09-04 Turbo-Lufttechnik GmbH Axial blower

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