GB207741A - Improvements in centrifugal fans - Google Patents

Improvements in centrifugal fans

Info

Publication number
GB207741A
GB207741A GB7389/23A GB738923A GB207741A GB 207741 A GB207741 A GB 207741A GB 7389/23 A GB7389/23 A GB 7389/23A GB 738923 A GB738923 A GB 738923A GB 207741 A GB207741 A GB 207741A
Authority
GB
United Kingdom
Prior art keywords
blades
fan
nozzle
outwardly
discs
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
GB7389/23A
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.)
AMERICAN BLOWER CO
Original Assignee
AMERICAN BLOWER 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 AMERICAN BLOWER CO filed Critical AMERICAN BLOWER CO
Priority to GB7389/23A priority Critical patent/GB207741A/en
Publication of GB207741A publication Critical patent/GB207741A/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
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/288—Part of the wheel having an ejecting effect, e.g. being bladeless diffuser

Landscapes

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

Abstract

207,741. Melhuish, A. E., (American Blower Co.). March 14, 1923. Casings.-Centrifugal fans are provided with open annular converging nozzle portions extending beyond the delivery ends of the blades and having outwardly diverging discharge edges. Blades q are secured between a disc f, Fig. 1, attached to the usual hub flange e, and a coned disc h, having a flared intake. The blades may be fixed by means of tenons entering recesses in the discs and the number of the blades may be varied with the size of the fan. The blade consists of two straight portions v, x, Fig. 2, at substantially 60‹ to one another, joined by a circular portion w. Relative dimensions for the blades are given. The annular nozzle 1, Fig. 1, is formed by extensions of the discs f, h which converge as shown and terminate in outwardlyflaring discharge lips 5, 6. In a modification, the nozzle is constructed separately and is stationary with respect, to the fan wheels. In a multi-bladed type of fan, the walls 14, 15 of the nozzle converge outwardly and terminate in outwardly-flaring lips 17, 18. The fan is shown mounted for use as a desk fan.
GB7389/23A 1923-03-14 1923-03-14 Improvements in centrifugal fans Expired GB207741A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7389/23A GB207741A (en) 1923-03-14 1923-03-14 Improvements in centrifugal fans

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7389/23A GB207741A (en) 1923-03-14 1923-03-14 Improvements in centrifugal fans

Publications (1)

Publication Number Publication Date
GB207741A true GB207741A (en) 1923-12-06

Family

ID=9832176

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7389/23A Expired GB207741A (en) 1923-03-14 1923-03-14 Improvements in centrifugal fans

Country Status (1)

Country Link
GB (1) GB207741A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2386707A2 (en) * 1977-04-06 1978-11-03 Felten & Guilleaume Carlswerk Fan for surface ventilated electrical machine - has blades enclosed by conical guide casing extending from intake grille
DE3517499A1 (en) * 1985-05-15 1986-11-20 Klein, Schanzlin & Becker Ag, 6710 Frankenthal WHEEL
EP2006610A1 (en) * 2007-05-31 2008-12-24 CO.ME.FRI. S.p.A. Unit for treating air with controlled flow

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2386707A2 (en) * 1977-04-06 1978-11-03 Felten & Guilleaume Carlswerk Fan for surface ventilated electrical machine - has blades enclosed by conical guide casing extending from intake grille
DE3517499A1 (en) * 1985-05-15 1986-11-20 Klein, Schanzlin & Becker Ag, 6710 Frankenthal WHEEL
EP2006610A1 (en) * 2007-05-31 2008-12-24 CO.ME.FRI. S.p.A. Unit for treating air with controlled flow

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