GB1038512A - Improvements in screw propellers and axial flow fans - Google Patents

Improvements in screw propellers and axial flow fans

Info

Publication number
GB1038512A
GB1038512A GB14082/63A GB1408263A GB1038512A GB 1038512 A GB1038512 A GB 1038512A GB 14082/63 A GB14082/63 A GB 14082/63A GB 1408263 A GB1408263 A GB 1408263A GB 1038512 A GB1038512 A GB 1038512A
Authority
GB
United Kingdom
Prior art keywords
degrees
fan
inches
hub
diameter
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
GB14082/63A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1038512A publication Critical patent/GB1038512A/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
    • F04D29/38—Blades
    • F04D29/384—Blades characterised by form

Landscapes

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

Abstract

1,038,512. Axial-flow fans. A. G. BORCHERS. April 9, 1963 [April 16, 1962], No. 14082/63. Heading F1C. [Also in Division B7] An axial-flow fan for ventilation, running at a predetermined speed has its blades shaped to provide a vortex stream generating a centrifugal force at its periphery which provides that the radial pressure of the discharged air will equal approximately the static pressure of the ambient fluid into which the air is discharged. The vortex is thereby projected from the fan as a rotating stream having a diameter substantially equal to the diameter of the fan. The rotational velocity at the design radius produces a pressure rise thereat which is equal to half the static pressure drop at the entrance to the fan. In a fan having an outer diameter of 23 inches and a hub diameter of 4 inches, the inlet angles of each blade with respect to the rotational plane are 14À14 degrees at the tip, 19À6 degrees at the design radius (8À13 inches) and 55À35 degrees at the hub. The outlet angles are 16-6 degrees at the tip, 22À25 degrees at the design radius and 59À75 degrees at the hub.
GB14082/63A 1962-04-16 1963-04-09 Improvements in screw propellers and axial flow fans Expired GB1038512A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA6261 1962-04-16

Publications (1)

Publication Number Publication Date
GB1038512A true GB1038512A (en) 1966-08-10

Family

ID=25560645

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14082/63A Expired GB1038512A (en) 1962-04-16 1963-04-09 Improvements in screw propellers and axial flow fans

Country Status (1)

Country Link
GB (1) GB1038512A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1722106A1 (en) * 2003-12-08 2006-11-15 Ilya Lvovich Shchukin Method for increasing a blade performance (variants)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1722106A1 (en) * 2003-12-08 2006-11-15 Ilya Lvovich Shchukin Method for increasing a blade performance (variants)
EP1722106A4 (en) * 2003-12-08 2007-04-18 Ilya Lvovich Shchukin Method for increasing a blade performance (variants)

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