GB207741A - Improvements in centrifugal fans - Google Patents
Improvements in centrifugal fansInfo
- 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
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.
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)
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 |
-
1923
- 1923-03-14 GB GB7389/23A patent/GB207741A/en not_active Expired
Cited By (3)
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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